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, and enables waterproofing of a control circuit capable of electrically adjusting a braking force. The braking device of a double-bearing reel according to an embodiment of the present invention brakes a spool rotatably mounted on a reel body, and is configured to include: 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 output shaft, which adjusts the braking force of the braking portion according to a rotation angle; a motor, which can drive the output shaft in forward and reverse directions; a reduction mechanism, which transmits force from the motor to the output shaft in a decelerated manner; a control portion, which controls the motor; and a power source, which supplies power to the motor. Among them, the braking device has: a watertight housing, which houses the motor, the reduction mechanism, the control portion, and the power source in a watertight manner; and a waterproof portion, which is used for waterproofing the output shaft.

Description

Technical Field

[0001] The present invention relates to a braking device having a waterproof mechanism, and particularly to a braking device for a double-bearing reel that brakes a spool rotatably assembled to 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).

[0003] Among such braking devices, there is a braking device capable of electrically adjusting the braking force. In Patent Document 1, a braking device for a double-bearing reel that brakes a spool rotatably assembled to a reel body is disclosed, which has: a spool braking mechanism including a rotor having a plurality of magnetic poles arranged in the rotational direction and having alternately different polarities and rotating in conjunction with the spool, a plurality of coils assembled to the reel body at intervals in the circumferential direction around the rotor and connected in series, and a switching mechanism connected to both ends of the plurality of coils connected in series, the spool braking mechanism braking the spool; a spool control unit having a circuit board assembled to the reel body and on which the plurality of coils are mounted and a control element mounted on the circuit board, the spool control unit electrically controlling the spool braking mechanism; a first synthetic resin film made of an insulating member covering the coil; and a second synthetic resin film made of an insulating member covering the spool control mechanism. In such a braking device, in order to waterproof the circuit portion for electrically controlling the braking force, the coil and the circuit are housed in a waterproof structure to achieve waterproofing of the control circuit.

[0004] Patent Document 1: Japanese Patent Application Laid-Open No. 2004-208633

[0005] In Patent Document 1, as the principle of applying a braking force to the spool, it is called a so-called generator brake. That is, through the power generation effect of the magnet provided on the spool and the coil provided on the stator, kinetic energy is converted into electric energy.

[0006] On the other hand, as the principle of applying a braking force to the spool, principles such as an eddy current brake and a friction brake have also been considered. In an eddy current brake, a magnetic field is applied from a magnetic circuit formed by a permanent magnet or the like provided on the stator to a conductive member provided on the spool, thereby generating eddy currents, and thus a braking force is applied. In a friction brake, a Coulomb frictional force is generated by applying a contact force to a braking portion provided on the spool from the outside, and thus a braking force is applied.

[0007] A braking device using these principles has advantageous features that are not present in a power - generating brake, such as being able to achieve lower inertia of the spool and being able to generate braking force even when the control circuit is open. However, in order to electrically control the braking force in these ways, it is necessary to transmit mechanical force to the outside of the waterproof structure, making it difficult to achieve a waterproof structure. Summary of the Invention

[0008] The present invention has been completed in view of the above - mentioned circumstances, and its object is to provide a braking device capable of achieving a waterproof structure of a braking device by means other than a power - generating brake, and a fishing reel having the braking device. These other objects of the present invention will become clear by referring to the entire specification.

[0009] The braking device of a double - bearing reel according to an embodiment of the present invention brakes a spool rotatably assembled to a reel body, and is configured to have: a portion to be braked, which is mounted on the spool; a braking portion, which imparts a braking force to the portion to be braked; an output shaft, which adjusts the braking force of the braking portion according to the rotation angle; a motor, which can drive the output shaft in both forward and reverse directions; a reduction mechanism, which transmits force from the motor to the output shaft in a decelerated manner; a control portion, which controls the motor; and a power source, which supplies power to the motor. Among them, the braking device has: a waterproof housing, which houses the motor, the reduction mechanism, the control portion, and the power source in a waterproof manner; and a waterproof portion, which is used for waterproofing the output shaft.

[0010] In the braking device of a double - bearing reel according to an embodiment of the present invention, the portion to be braked is a conductor.

[0011] The braking portion is a magnetic circuit composed of a permanent magnet, and the output shaft changes the magnetic field for the conductor by moving at least a part of the magnetic circuit.

[0012] In the braking device of a double - bearing reel according to an embodiment of the present invention, the portion to be braked is a friction member, the braking portion is a friction braking portion that transmits a contact force to the friction member, and the output shaft changes the contact force according to rotation.

[0013] In the braking device of a double - bearing reel according to an embodiment of the present invention, it is configured that the waterproof housing further houses at least any one of a rotation detection portion, a position detection portion, or a clutch state detection portion. The rotation detection portion detects the rotation of the spool, the position detection portion detects the position of the reduction gear of the reduction mechanism, and the clutch state detection portion detects the state of the clutch of the fishing reel.

[0014] A fishing reel according to an embodiment of the present invention is configured to have the braking device of any of the above - mentioned double - bearing reels.

[0015] According to the above-described embodiment, it is possible to provide a braking device that can achieve waterproofing of a control circuit for electrically adjustable braking force and a fishing reel having the braking device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a diagram for explaining a waterproof structure in a fishing reel having a braking device according to an embodiment of the present invention.

[0017] Figure 2 It is a diagram showing the structure of a braking device in a braking device or a fishing reel according to an embodiment of the present invention.

[0018] Figure 3 It is a diagram showing the structure of a braking device in a braking device or a fishing reel according to an embodiment of the present invention.

[0019] Figure 4 It is a diagram showing the structure of a braking device in a braking device or a fishing reel according to an embodiment of the present invention.

[0020] Figure 5 It is a diagram showing a cross-sectional view of a fishing reel having a braking device according to an embodiment of the present invention.

[0021] REFERENCE SIGNS

[0022] 1: Fishing reel; 2: Frame (reel body); 3: Spool; 4: Braked portion (braked unit); 5: Braking portion (braking unit); 6: Output member (output unit or output mechanism); 7: Output shaft; 8: Waterproof portion (waterproof unit or waterproof member); 9: Watertight housing (waterproof housing); 10: Braking device; 11: Reduction gear; 12: Reduction mechanism; 13: Motor; 14: Substrate; 15: Battery; 16: Box member; 17: Cover member; 18: Rotating magnet; 19: Fixed magnet; 20: Space; 21: Rotating magnet; 22: Fixed magnet. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Hereinafter, embodiments of a braking force control device of the present invention and a fishing reel having the 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 the sake of convenience of explanation, each drawing is not necessarily drawn to an accurate scale.

[0024] Refer to Figures 1 to 5 , a braking device of a double-bearing reel according to an embodiment of the present invention and a fishing reel having the braking device will be described.

[0025] First, Figure 1 FIG. Figure 1 is a schematic view for explaining a waterproof structure in a fishing reel 1 having a braking device 10 according to an embodiment of the present invention. Figure 5 FIG. Figure 5 is a cross-sectional view of the fishing reel 1 having the braking device 10 according to an embodiment of the present invention for explaining the waterproof structure.

[0026] As Figure 1 and Figure 5 shown, a fishing reel 1 according to an embodiment of the present invention is composed of a frame (reel body) 2, a spool 3, a braked portion (braked unit) 4, a braking portion (braking unit) 5, an output member (output unit or output mechanism) 6, an output shaft 7, a waterproof portion (waterproof unit or waterproof member) 8, a watertight housing (waterproof housing) 9, a reduction mechanism 12 including a reduction gear 11, a motor 13, a substrate 14, and a battery 15.

[0027] Here, the spool 3 is supported so as to be rotatable relative to the reel body 2, and the fishing line can be wound around the outer periphery by rotating in the forward direction. In addition, when casting a bait or the like, the wound fishing line can be released by rotating in the reverse direction. At this time, if the amount of the released fishing line is excessive, line entanglement called backlash occurs, which hinders the normal use of the fishing reel 1. By applying an appropriate braking force using the braking portion 5 described later, backlash can be prevented.

[0028] The braked portion 4 is fixed to the spool 3 and receives the braking force by the braking portion 5. The output member 6 can adjust the braking force applied by the braking portion 5 to the braked portion 4 by rotating at least a part of the braking portion 5. Its structure varies depending on the type of the braking portion, and thus will be described in detail later. The output member 6 is supported so as to be rotatable about the output shaft 7 as a central axis. One end or a part (first part) of the output shaft 7 is housed in the watertight housing 9 described later, and the other end or a part (second part) of the output shaft 7 is disposed outside the watertight housing.

[0029] By providing a waterproof member as the waterproof portion 8 at a portion where the output shaft 7 penetrates the watertight housing 9, waterproofing inside the watertight housing 9 can be achieved. Regarding the waterproof member as the waterproof portion 8, by using a known means such as a waterproof gasket such as an O-ring or a waterproof seal using magnetic fluid, both the rotational support of the output shaft and the waterproofing of the watertight housing can be achieved. The waterproof member as the waterproof portion 8 is not limited thereto, and other known techniques can be used.

[0030] Here, considering cost and volume, the motor 13 is a motor without waterproof function. Generally, even if waterproof treatment is performed on the motor 13, it is difficult to prevent water from entering the gap between the main body of the motor 13 and the shaft core. By providing a waterproof mechanism such as an O-ring that narrows this gap, waterproof performance can be improved. However, correspondingly, due to the friction generated between the main body and the shaft core, torque loss occurs, so the relationship between waterproof performance and torque is a trade-off relationship. To solve this problem, a reduction gear 11 is provided between the shaft core of the motor and the output shaft 7. Thus, the torque loss caused by applying the waterproof portion 8 can also be compensated by the reduction gear 11. Furthermore, the braking portion 4 can be braked with less power.

[0031] The output shaft 7 receives power transmission from the motor 13 via a reduction mechanism 12 such as the reduction gear 11. The motor 13 is electrically connected to a substrate 14 having a microcomputer and a motor driver, receives commands for forward and reverse rotation as needed, and can position the output shaft 7 at a specified position. At this time, it can also be configured to provide a position sensor (not shown) at a part of the reduction gear 11 and receive its output signal through the microcomputer, so that feedback control of the motor 13 can be performed. In addition, the battery 15 supplies power to the motor 13 and the control circuit.

[0032] The watertight housing 9 is composed of, for example, a box member 16 and a lid member 17. By hermetically fixing the box member 16 and the lid member 17, it is possible to prevent water or other substances from entering the interior of the structural components housed therein. When the watertight housing 9 is composed of the box member 16 and the lid member 17, the connecting portion between the box member 16 and the lid member 17 can also be provided with a waterproof joint member (waterproof joint unit) such as a gasket member made of an O-ring, a waterproof double-sided tape, a laser welding portion, a sleeve structure, a waterproof grease, etc. in a closed loop over the entire circumference to prevent the intrusion of water and other substances from the outside into the ring. In the internal space thus formed, the motor 13, the reduction gear 11, the substrate 14, and the battery 15 can be housed inside. It is also possible to arrange a position sensor for detecting the position of the reduction gear described above and a rotation sensor for detecting the rotation of the spool in this internal space. Thus, a plurality of components that require waterproof treatment can be housed in a single watertight structure, so that the overall size of the device can be avoided from becoming large.

[0033] Next, with reference to Figures 2 to 4 , the structure of the braking device 10 of one embodiment of the present invention or the braking device 10 in the fishing reel 1 will be described. Figure 2The example shown is a case where an eddy current brake is used as the braking device 10. In this example, the braking section 5 is composed of a rotating magnet 18 and a fixed magnet 19. The rotating magnet 18 and the fixed magnet 19 form a magnetic circuit, and the magnetic field generated by this magnetic circuit penetrates the induction rotor, which is composed of a conductor and serves as the braked section 4. The induction rotor serving as the braked section 4 is installed on the reel 3, and a braking force proportional to the intensity of the magnetic field and the rotational speed of the reel 3 is generated. As the output member 6, for example, by providing gears or the like, the rotational force from the above output shaft is transmitted to the rotating magnet 18, whereby the rotating magnet 18 can be rotated. Thus, by moving the rotating magnet 18 to a specified position (by rotating from Figure 2 the state of (a) to Figure 2 the state of (b)), the braking force on the reel 3 can be adjusted.

[0034] Next, Figure 3 The example shown is a case where a friction brake is used as the braking device 10. As shown in the figure, a braking section 5 (for example, an elastic friction member) is provided at the front end of the output member 6 (or the output shaft 7). The braking section 5 can come into contact with the braked section 4 installed on the reel 3. If the output member 6 (or the output shaft 7) is rotated, the braking section 5 comes into contact with the braked section 4 according to its movement amount, so the braking section 5 is elastically deformed. Between the braked section 4 and the braking section 5, a reaction force corresponding to the elastic deformation amount acts as a contact force. Thereby, a frictional force is generated on the reel 3. Here, the rotational movement amount of the output member 6 (or the output shaft 7) is proportional to the frictional force applied to the reel 3. Thus, by moving (rotating) the output member 6 (or the output shaft 7) to a specified position, the braking force on the reel 3 can be adjusted.

[0035] Next, Figure 4 The example shown is a case where a magnetorheological fluid brake is used as the braking device 10. As shown in the figure, a cylindrical braked section 4 (shown as a circular shape in the cross-section of the braked section 4) is provided on the reel 3. The braked section 4 receives viscous resistance from the magnetorheological fluid by being disposed in a space 20 filled with magnetorheological fluid (MR fluid). The magnetorheological fluid changes its viscosity according to the magnetic field. Similar to the above, a magnetic circuit is formed by a rotating magnet 21 and a fixed magnet 22, and the magnetic field generated by this magnetic circuit penetrates the magnetorheological fluid. By rotating the output member 6, the rotating magnet 21 can be rotated. By moving (rotating) the output member 6 to a specified position (by rotating from Figure 4 the state of (a) to Figure 4 the state of (b)), the braking force on the reel 3 can be adjusted. In addition, in order to improve the magnetic circuit, it is preferable that the braked section 4 is made of a ferromagnetic material, but it can also be made of a non-magnetic material.

[0036] In the braking device 10 of an embodiment of the present invention or the braking device 10 in the fishing reel 1, the output member is rotated by an electric motor, and the braking force of the braking unit is adjusted according to the amount of rotation. That is, by rotating a permanent magnet that forms a part of the magnetic circuit of the eddy current brake or rotating the braking member of the friction brake, the braking force applied to the reel can be adjusted. In this way, a mechanical transmission force can be transmitted from the output member, so it can be used for various types of casting brakes.

[0037] In the braking device 10 of an embodiment of the present invention or the braking device 10 in the fishing reel 1, since the output member is arranged outside the watertight structure, water can enter the braking portion, and the layout of the waterproof structure does not limit the braking portion itself. For example, when waterproofing the inside of the eddy current brake, there may be a structure such as setting a waterproof wall between the rotating magnet and the induction rotor. However, in this case, the gap between the induction rotor and the rotating magnet becomes wider, so the magnetic field to the induction rotor becomes weaker, and it may be difficult to increase the braking force.

[0038] Braking methods such as eddy current type and friction type can apply braking force even when the control circuit is open, and in addition, it is possible to achieve low inertia without setting a magnet on the reel. Therefore, it is particularly advantageous when casting lightweight lures, and it can apply a braking force that does not depend on the rotational speed of the reel (friction brake), etc., which are features not found in the power generation type brake. In addition, if these braking methods can be electronically controlled, there are advantages such as being able to adjust the braking force at any time during casting (throwing), and being able to store the change in braking force in a memory, etc.

[0039] In addition, generally, the greater the waterproof ability of the waterproof portion (waterproof unit) based on a gasket or the like, the greater the frictional resistance generated when the output shaft rotates. In the braking device 10 of an embodiment of the present invention or the braking device 10 in the fishing reel 1, the power of the electric motor is multiplied by the reduction gear and then transmitted to the output shaft, and a waterproof unit is provided on the output shaft in front of it. Thus, the influence of the frictional resistance generated by the waterproof unit on the electric motor is 1 of the reduction ratio. Therefore, the electric motor can overcome the frictional resistance and rotate the output shaft stably, and in addition, a smaller electric motor can be used, so it has the technical effect of being able to reduce power consumption. And in the braking device 10 of an embodiment of the present invention or the braking device 10 in the fishing reel 1, since the substrate, electric motor, and gear are housed in one unit, it also has the advantage of not causing the reel to become large.

[0040] The braking device of the double-bearing fishing reel according to an embodiment of the present invention brakes a spool rotatably assembled to a reel body. The braking device is configured to include: 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 output shaft, which adjusts the braking force of the braking portion according to a rotation angle; a motor, which can drive the output shaft in both forward and reverse directions; a reduction mechanism, which transmits force from the motor to the output shaft in a decelerated manner; a control portion, which controls the motor; and a power source, which supplies power to the motor. Among them, the braking device has: a watertight housing, which houses the motor, the reduction mechanism, the control portion, and the power source in a watertight manner; and a waterproof portion, which is used for waterproofing the output shaft.

[0041] The braking device of the double-bearing fishing reel according to an embodiment of the present invention can achieve waterproofing of a control circuit capable of electrically adjusting a braking force. More specifically, even when using a braking device that transmits mechanical force to the outside of a watertight structure, waterproofing can be achieved while avoiding enlargement of the device.

[0042] In the braking device of the double-bearing fishing reel according to an embodiment of the present invention, the portion to be braked is a conductor.

[0043] The braking portion is a magnetic circuit composed of a permanent magnet, and the output shaft changes a magnetic field for the conductor by moving at least a part of the magnetic circuit. In this way, enlargement of the entire device can be avoided, and waterproofing in an eddy current brake can be achieved.

[0044] In the braking device of the double-bearing fishing reel according to an embodiment of the present invention, the portion to be braked is a friction member, the braking portion is a friction braking portion that transmits a contact force to the friction member, and the output shaft changes the contact force according to rotation. In this way, enlargement of the entire device can be avoided, and waterproofing in a friction brake can be achieved.

[0045] Here, a frame (reel body) 2 can be mounted on a fishing rod. The fishing reel 1, like a conventional fishing reel, has an operation unit (handle) (not shown). If the spool 3 is rotated forward by a user's operation, fishing line can be wound. Rotation of the handle (not shown) is transmitted to the spool 3 through a transmission unit such as a gear. The fishing reel 1 has a clutch unit (not shown). By operating the clutch unit, the user can select connection or disconnection of power transmission to the spool 3. In the connected state, winding can be performed using the operation unit. In the released state, the spool 3 can rotate freely in both forward and reverse directions, so that fishing line can be released.

[0046] In addition, in the braking device 10 of an embodiment of the present invention or the braking device 10 in the fishing reel 1, a clutch state detection unit (clutch state detection part) for detecting the state of the clutch unit may be provided, and it is regarded that the casting preparation is completed when the clutch is switched from the connected state to the disconnected state.

[0047] In the braking device of the double-bearing reel according to an embodiment of the present invention, the watertight housing is configured to accommodate at least any one of a rotation detection unit, a position detection unit, or a clutch state detection unit. The rotation detection unit detects the rotation of the spool, the position detection unit detects the position of the reduction gear of the reduction mechanism, and the clutch state detection unit detects the state of the clutch of the fishing reel. In this way, a plurality of components that require waterproof treatment can be accommodated in a single watertight structure, thus avoiding the enlargement of the entire device.

[0048] The fishing reel according to an embodiment of the present invention is configured to have the braking device of any of the above double-bearing reels. According to the fishing reel having the braking device of an embodiment of the present invention, waterproofing of the control circuit capable of electrically adjusting the braking force can be achieved. More specifically, a reel can be provided that can avoid enlargement of the device and achieve waterproofing even when using a braking device that transmits mechanical force to the outside of the watertight structure.

[0049] 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. In addition, structural elements not explicitly described in this specification can be added to the described embodiments, and a part of the structural elements described in each embodiment can also be omitted.

Claims

1. A braking device, which is a braking device of a double-bearing reel, and brakes a reel that is rotatably assembled on a reel body of the double-bearing reel. The braking device has: A braked part, which is mounted on the reel; A braking part, which applies a braking force to the braked part; An output shaft, which adjusts the braking force of the braking part according to the rotation angle; A motor, which can drive the output shaft in both forward and reverse directions; A reduction mechanism, which is arranged between the axis of the motor and the output shaft, and transmits force from the motor to the output shaft in a decelerated manner; A control part, which controls the motor; and A power source, which supplies power to the motor, wherein The braking device has: A watertight housing, which houses the motor, the reduction mechanism, the control part, and the power source in a watertight manner; and A waterproof part, which is arranged at the part where the output shaft penetrates the watertight housing and is used for waterproofing the output shaft, The loss of torque caused by applying the waterproof part is compensated by the reduction gears included in the reduction mechanism, where a part of the output shaft is arranged outside the watertight housing.

2. The braking device according to claim 1, wherein The braked part is a conductor, The braking part is a magnetic circuit composed of a permanent magnet, The output shaft changes the magnetic field for the conductor by moving at least a part of the magnetic circuit.

3. The braking device according to claim 1, wherein The braked part is a friction member, The braking part is a friction braking part that transmits a contact force to the friction member, The output shaft changes the contact force according to rotation.

4. The braking device according to any one of claims 1 to 3, wherein The watertight housing further houses at least any one of a rotation detection part, a position detection part, or a clutch state detection part. The rotation detection part detects the rotation of the reel, the position detection part detects the position of the reduction gears of the reduction mechanism, and the clutch state detection part detects the state of the clutch of the fishing reel.

5. A fishing reel, which has the braking device according to any one of claims 1 to 4.

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