Brake device and fishing reel having the same

Abstract

The present invention provides a braking device and a fishing reel having the braking device. By integrating a component that generates braking force with a detected unit for detecting rotation, it is possible to avoid the enlargement, high cost, and increase in the inertia of the reel of the device. The braking device of a fishing reel according to an embodiment of the present invention is configured to include: a braked portion that is mounted on a reel capable of winding a fishing line and is formed of a conductor; a braking portion that generates braking force by applying a magnetic field to the braked portion; a detected portion that is provided on the braked portion; and a rotation detection sensor that reads the rotation of the reel by detecting the detected portion.

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 the braking device. Background Art

[0002] Conventionally, in a double-bearing reel, particularly in a baitcasting reel that casts a fishing hook assembly such as a bait at the front end of a fishing line, a braking device for braking the spool is provided to prevent recoil during casting. As such a braking device, there is a braking device as disclosed in Patent Document 1 that can electrically adjust the braking force and thus adjust the braking force during the casting of a bait or the like.

[0003] As such a double-axis fishing reel, Patent Document 1 discloses a fishing reel having: a sensor that detects the rotation of the spool; a counter circuit that counts the number of pulses of a signal from the sensor for each signal of a reference clock circuit by a pulse counter; and a control unit that calculates the rotational speed and rotational acceleration of the spool based on the number of pulses from the counter circuit by an arithmetic circuit, and generates eddy currents in a non-magnetic conductor when the values reach values set in advance by a data setter.

[0004] Patent Document 1: Japanese Utility Model Publication No. 03-010867

[0005] In Patent Document 1, in order to obtain the state of the rotational speed of the spool during casting, a rotation detection sensor is provided on the spool, and a detection unit such as a magnetic sensor or an optical sensor converts a detected unit such as a magnet or a reflecting portion provided on the spool into an electric signal, thereby detecting the rotational speed and rotational movement amount. Therefore, in addition to the component that generates the braking force on the spool, a detected unit needs to be provided separately, which causes problems such as an increase in the size, cost, and inertia of the spool of the entire device. Summary of the Invention

[0006] The present invention has been made in view of the above circumstances, and an object thereof is to provide a braking device and a fishing reel having the braking device, which can avoid an increase in the size, cost, and inertia of the spool by integrating the component that generates the braking force and the detected unit for detecting rotation. Other objects of the present invention will become clear by referring to the entire specification.

[0007] The braking device of a fishing reel according to an embodiment of the present invention is configured to include: a portion to be braked, which is mounted on a spool capable of winding fishing line and is made of a conductive body; a braking portion, which generates a braking force by applying a magnetic field to the portion to be braked; a portion to be detected, which is provided on the portion to be braked; and a rotation detection sensor, which detects the rotation of the spool by detecting the portion to be detected.

[0008] In the braking device according to an embodiment of the present invention, the rotation detection sensor is a reflective photoelectric sensor, and the portion to be detected is provided on the portion to be braked by performing two types of surface treatments with different reflectivities on the end face of the portion to be braked.

[0009] In the braking device according to an embodiment of the present invention, the rotation detection sensor is a transmissive photoelectric sensor, and the portion to be detected is provided on the portion to be braked by alternately providing light-shielding portions and transmissive portions on the portion to be braked.

[0010] In the braking device according to an embodiment of the present invention, the rotation detection sensor is a capacitive proximity sensor, and the portion to be detected is provided on the portion to be braked by forming concave portions and convex portions on the surface facing the rotation detection sensor.

[0011] In the braking device according to an embodiment of the present invention, the braking portion is composed of two cylindrical magnets opposed to each other in the radial direction of the braking portion, and the rotation detection sensor is arranged between the two cylindrical magnets when observed along the radial direction.

[0012] The braking device according to an embodiment of the present invention can adjust the braking force by moving at least one of the two cylindrical magnets by a motor.

[0013] A fishing reel according to an embodiment of the present invention is configured to include any one of the above braking devices.

[0014] According to the above embodiment, it is possible to provide a braking device and a fishing reel having the braking device. By integrating the component that generates the braking force with the unit to be detected for detecting rotation, it is possible to avoid the enlargement, high cost, and increase in inertia of the spool of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a view for explaining a fishing reel 1 according to an embodiment of the present invention.

[0016] Figure 2 It is a view showing the structure of a braking device 10 according to an embodiment of the present invention.

[0017] Figure 3This is a diagram showing the detection unit (rotation detection sensor) of the fishing reel 1 according to an embodiment of the present invention.

[0018] Figure 4 This is a diagram showing the detection unit (rotation detection sensor) of the fishing reel 1 according to an embodiment of the present invention.

[0019] Figure 5 This is a diagram showing the detection unit (rotation detection sensor) of the fishing reel 1 according to an embodiment of the present invention.

[0020] Reference Signs Explanation

[0021] 1: Fishing reel; 2: Frame (reel body); 3: Spool; 4: Braked portion (braked unit); 5: Bearing; 6: Braking portion (braking unit); 7: Mounting plate; 8: Middle cover; 9: Motor; 10: Reduction mechanism (reduction gear train); 11: Battery; 12: Substrate (control substrate); 13: Detection unit (rotation detection sensor); 14: Outer cover; 15: Detected portion; 16: Light projecting portion; 17: Light receiving portion; 18: Dark portion; 19: Bright portion; 20: Reflective photoelectric sensor; 21: Transmission type photoelectric sensor; 22: Light projecting portion; 23: Light receiving portion; 24: Slit portion; 25: Non-slit portion; 26: Capacitive proximity sensor; 27: Slit portion; 28: Non-slit portion; 61: Rotating magnet; 62: Fixed magnet. Detailed Embodiment

[0022] Hereinafter, embodiments of the braking device of the present invention and a fishing reel having the braking device will be specifically described with reference to the drawings. In the multiple drawings, the same reference signs are assigned to common structural elements in the multiple drawings. It should be noted that, for the sake of convenience of explanation, the drawings are not necessarily drawn to an accurate scale.

[0023] Refer to Figures 1 to 4 , a fishing reel according to an embodiment of the present invention and a braking device provided in the fishing reel will be described. In addition, for the sake of simplifying the explanation, illustrations and descriptions of a part of the known functions of the fishing reel 1 are omitted.

[0024] First, Figure 1 This is a cross-sectional view of the fishing reel 1, showing a cross-section passing through the central axis of the reduction gear train described later. In addition, for the sake of simplifying the explanation, illustrations and descriptions of a part of the known functions of the fishing reel 1 are omitted.

[0025] As Figure 1As shown, a fishing reel 1 according to an embodiment of the present invention is configured to include a frame (reel body) 2, a spool 3, a braked portion (inductive rotor) 4, a bearing 5, a braking portion (braking unit) 6, a mounting plate 7, a locking member (not shown), a middle cover 8, a motor 9, a speed reduction mechanism (speed reduction gear train) 10, a battery 11, a substrate 12, a detection portion (rotation detection sensor) 13 described later, and an outer cover 14. However, elements other than these structural elements may also be included.

[0026] The frame (reel body) 2 is formed to be mountable on a fishing rod (not shown). Similar to existing fishing reels, a fishing reel 1 according to an embodiment of the present invention has an operation portion or an operation unit (e.g., a handle) (not shown), and by operating the user, the spool 3 can be rotated in the forward direction to wind the fishing line. The rotation of the operation portion or the operation unit (hereinafter referred to as the operation portion) is transmitted to the spool 3 through a transmission unit such as a gear (not shown).

[0027] Moreover, a fishing reel 1 according to an embodiment of the present invention has a clutch portion (clutch unit) (not shown), and the user can select the connection / release of power transmission to the spool 3 by operating the clutch portion (clutch unit). In the connected state of power transmission to the spool 3, winding based on the operation portion can be performed. On the other hand, in the open state of power transmission to the spool 3, the spool can freely rotate in both forward and reverse directions, and the fishing line can be released.

[0028] In addition, a fishing reel 1 according to an embodiment of the present invention may also have a drag portion or a drag unit (not shown) that idles the spool 3 when a torque exceeding a specified value is generated to prevent the fishing line from breaking, and a reverse prevention portion or a reverse prevention unit (not shown) that prevents the reverse rotation of the operation portion. Moreover, an oscillation device (not shown) may be provided, and this oscillation device reciprocates the position of a fishing line guiding portion that guides the fishing line according to the rotation of the spool 3, thereby winding the fishing line evenly.

[0029] The spool 3 is supported by the reel body 2 so as to be rotatable relative to the reel body 2, and by rotating the spool 3 in the forward direction, the fishing line can be wound around the outer peripheral region of the spool 3. On the other hand, when casting bait or the like, the spool 3 rotates in the reverse direction, and the wound fishing line can be released. At this time, if the amount of fishing line released is excessive compared to the moving amount of the bait or the like, sometimes a line entanglement called backlashing may occur due to the excess fishing line, which hinders the normal use of the fishing reel 1. Therefore, by applying an appropriate braking force generated by the braking portion 6 described later to the spool 3, such backlashing is prevented.

[0030] The mounting plate 7 can be fixed to the frame 2. In the fishing reel 1 according to an embodiment of the present invention, by adopting a bayonet structure in which a plurality of locking claws provided on a locking member (not shown) are rotated to be locked to a holding portion (not shown) provided on the frame 2, the reel 3 or the mounting plate 7 can be detached from the frame 2, but it can also be fixed by methods such as screw fixing or bonding.

[0031] By fixing the mounting plate 7 to the frame 2, the reel 3 is axially supported so as to be rotatable relative to the frame 2. In addition, by holding the fixed magnet 62 and the movable magnet (rotating magnet) 61 on the mounting plate 7, a braking portion described later is constituted. In addition, the side plate unit is constituted by the mounting plate 7, the middle cover 8, and the outer cover 14. In addition, a watertight chamber is constituted by the middle cover 8 and the outer cover 14, and electrical components such as a substrate 12, a battery 11, a motor 9, and a sensor (not shown) are housed inside.

[0032] A ring-shaped rotating body-shaped braking portion (induction rotor) 4 made of a non-magnetic conductor such as aluminum or copper is mounted on the reel 3. A cylindrical rotating magnet 61 is disposed on the outer peripheral side of the braking portion (induction rotor) 4, and a cylindrical fixed magnet 62 is disposed on the inner peripheral side of the braking portion (induction rotor) 4.

[0033] The outer peripheral portion of the fixed magnet 62 is equally divided into N parts, and N poles and S poles are alternately magnetized. In addition, the inner peripheral portion of the rotating magnet 61 is equally divided into N parts, and N poles and S poles are alternately magnetized. The magnetic field generated by the fixed magnet 62 and the rotating magnet 61 penetrates the braking portion (induction rotor) 4 located between them. When the reel 3 rotates, eddy currents are generated in the braking portion (induction rotor) 4, and a braking torque corresponding to the rotation speed acts. Here, the magnitude of the braking torque is proportional to the magnetic field strength and the rotation speed.

[0034] Thus, when casting a bait or the like, a braking force can be applied to the reel 3, and by suppressing the generation of line scraps during casting, the generation of line entanglement can be prevented. By appropriately adjusting the positional relationship between the rotating magnet 61 and the fixed magnet 62, the magnetic field generated in the braking portion (induction rotor) 4 can be adjusted to become an appropriate braking force. The position of the rotating magnet 61 can be set, for example, to be adjustable by the user using a dial, or can be appropriately changed in position by a motor as in the braking portion 6 of the fishing reel 1 according to an embodiment of the present invention.

[0035] Next, refer to Figure 2, an example of the structure of the braking portion 6 in the fishing reel 1 according to an embodiment of the present invention will be described. As shown in the figure, the braking portion 6 is composed of a rotating magnet 61 rotatably supported on a mounting plate 7 (not shown) and a fixed magnet 62 fixed to the mounting plate 7 (not shown). The rotating magnet 61 and the fixed magnet 62 form a magnetic circuit, and the magnetic field generated by this magnetic circuit is formed so as to penetrate the braked portion (induction rotor) 4 composed of a conductor. In this way, the braked portion (induction rotor) 4 generates a braking force proportional to the intensity of the magnetic field and the rotational speed of the spool 3.

[0036] In addition, by transmitting the power generated by the motor 9 to the rotating magnet 61 via gears or the like, the rotating magnet 61 can be rotated. In this way, the rotating magnet 61 is moved to a specified position (moved from the state of (A) in Figure 2 to the state of (B) in Figure 2 ), and the braking force applied to the braked portion 4 fixed to the spool 3 is adjusted, whereby the rotational speed of the spool 3 can be adjusted.

[0037] The fishing reel or the braking device of the fishing reel according to an embodiment of the present invention is configured to include: a braked portion, which is mounted on a spool capable of winding a fishing line and is composed of a conductive body; a braking portion, which generates a braking force by applying a magnetic field to the braked member; a detected portion, which is provided on the braked portion; and a rotation detection sensor, which detects the rotation of the spool by detecting the detected portion.

[0038] According to the fishing reel or the braking device of the fishing reel according to an embodiment of the present invention, a braking device and a fishing reel having the braking device can be provided. By integrating the component that generates the braking force with the detected unit for detecting rotation, it is possible to avoid the enlargement or high cost of the device and the increase in the inertia of the spool.

[0039] Moreover, in the fishing reel or the braking device of the fishing reel according to an embodiment of the present invention, the rotation detection sensor is a reflection type photoelectric sensor, and the detected portion is provided on the braked portion by performing two kinds of surface treatments with different reflectivities on the end face of the braked portion.

[0040] In addition, in the fishing reel or the braking device of the fishing reel according to an embodiment of the present invention, the rotation detection sensor is a transmissive photoelectric sensor, and the detected portion is provided on the braked portion by alternately providing light-shielding portions and transmissive portions on the braked portion.

[0041] In addition, in the fishing reel or the braking device of the fishing reel according to an embodiment of the present invention, the rotation detection sensor is a capacitive proximity sensor, and the detected portion is provided on the braked portion by forming concave portions and convex portions on the surface facing the rotation detection sensor.

[0042] In the fishing reel or the braking device of the fishing reel according to an embodiment of the present invention, the braking portion is composed of two cylindrical magnets opposed to each other in the radial direction (corresponding to the radial direction of the Figure 2 braking device), and the rotation detection sensor is configured to be disposed between the two cylindrical magnets when viewed along the radial direction.

[0043] In the fishing reel or the braking device of the fishing reel according to an embodiment of the present invention, at least one of the two cylindrical magnets is moved by a motor, so that the braking force can be adjusted.

[0044] Next, a method for detecting the rotation of the spool 3 will be described. In the fishing reel 1 according to an embodiment of the present invention, a known incremental rotary encoder that outputs a pulse signal a specified number of times per rotation of the spool 3 is used to detect the rotation speed, but it is not limited thereto.

[0045] Next, with reference to Figure 3 a detection unit (rotation detection sensor) in the fishing reel 1 according to an embodiment of the present invention will be described. Figure 3 Shown is an example in which a reflective optical sensor 20 is used as the detection unit (rotation detection sensor) 13. The reflective optical sensors 20 are arranged such that the optical axes of the light projecting unit 16 and the light receiving unit 17 are substantially parallel. If light is projected from the light projecting unit 16 toward the detected portion 15 opposed to the rotation detection sensor (detection unit) 13, the reflected light from the detected portion 15 can be received by the light receiving unit 17.

[0046] In the fishing reel 1 according to an embodiment of the present invention, as Figure 3 shown, in order to form the detected portion 15, the end face of the braked portion (induction rotor) 4 is equally divided into N parts, and this surface is alternately divided into light and dark to change the reflectivity. The bright portion 19 is a metal surface or white painted. The dark portion 18 is subjected to a surface treatment with a low reflectivity such as black painting, black alumina film treatment, black plating treatment, or anti-reflection film pasting.

[0047] By arranging two reflective photoelectric sensors 20 (light projecting part 16, light receiving part 17) at positions opposite to the detected part 15, it is possible to detect the brightness and darkness of the surface opposite to each photoelectric sensor. Thus, the rotation of the spool 3 can be detected. In a fishing reel 1 according to an embodiment of the present invention, the brightness and darkness interval of the detected part 15 is set to 180°, and the two photoelectric sensors are arranged separated by 90°. Thus, a signal of four pulses is output for each rotation of the spool 3. By counting the number of these pulses, the rotational movement amount of the spool 3 can be detected. In addition, by counting the number of pulses generated within a specified time, the rotational speed of the spool 3 can be detected. By detecting the rotational movement amount and rotational speed of the spool, the timing for applying braking force to the spool can be appropriately determined. It should be noted that various considerations can be made regarding the type, number, position, shape, size, number, formation method, etc. of the bright part / dark part of the reflective photoelectric sensor 20, and it is not limited to a specific manner.

[0048] The method for detecting the rotation of the spool in a fishing reel 1 according to an embodiment of the present invention is not limited to the above method. Figure 4 An example of using a transmissive photoelectric sensor 21 as the detection part (rotation detection sensor) 13 is shown. The transmissive photoelectric sensor 21 is arranged opposite so that the optical axes of the light projecting part 22 and the light receiving part 23 are substantially aligned, and it is possible to detect the presence or absence of an opaque object entering between the light projecting part 22 and the light receiving part 23.

[0049] In a fishing reel 1 according to an embodiment of the present invention, the part to be braked (inductive rotor) 4 is equally divided into N in the rotational direction, and slit shapes are alternately provided. In the slit part 24, the light emitted from the light projecting part 22 can pass through, and in the non-slit part (the part where no slit is provided) 25, the light emitted from the light projecting part 22 can be blocked.

[0050] By arranging the part to be braked (inductive rotor) 4 between the light projecting part 22 and the light receiving part 23 of the transmissive photoelectric sensor 21, it is possible to detect whether there is a slit part 24 between the transmissive photoelectric sensors 21. Thus, the rotation of the spool can be detected. In a fishing reel 1 according to an embodiment of the present invention, the interval of the slits is set to 60°, and the two photoelectric sensors are arranged separated by 30°. Thus, a signal of twelve pulses is output for each rotation of the spool. Thus, the same effect as that in Figure 3 can be achieved. It should be noted that various considerations can be made regarding the type, number, position, shape, size, number, etc. of the slits of the transmissive photoelectric sensor 21, and it is not limited to a specific manner.

[0051] Next, Figure 5An example of using the capacitive proximity sensor 26 as the detection unit (rotation detection sensor) 13 is shown. In the capacitive proximity sensor 26, the proximity of an object can be detected by detecting the change in capacitance caused by the intrusion of the object into the electric field. In the fishing reel 1 according to an embodiment of the present invention, the braking unit (inductive rotor) 4 is equally divided into N in the rotational direction, and slit shapes are alternately provided. When the slit portion 27 faces the capacitive proximity sensor 26, a sufficient gap is formed between the capacitive proximity sensor 26 and the braking unit (inductive rotor) 4, whereby the capacitive proximity sensor 26 can detect the slit portion (a state where the braking unit (inductive rotor) 4 does not approach).

[0052] On the other hand, when the non-slit portion 28 (the portion without a slit) is in the position facing the capacitive proximity sensor 26, the braking unit (inductive rotor) 4 enters the electric field generated by the capacitive proximity sensor 26. Therefore, by detecting the change in capacitance at this time, the proximity state of the braking unit (inductive rotor) 4 can be detected. In this way, the rotation of the spool can be detected.

[0053] In the fishing reel 1 according to an embodiment of the present invention, the interval of the slits is set to 60°, and two capacitive proximity sensors 26 are arranged with a separation of 30°. Thus, a signal of 12 pulses is output every time the spool rotates one turn. In this way, the same effect as in the case of Figure 3 can be achieved. In addition, various types, numbers, or positions of the capacitive proximity sensors 26, the shapes, sizes, numbers, etc. of the slits can be considered, and are not limited to a specific form.

[0054] As described above, according to the fishing reel 1 according to an embodiment of the present invention, it is possible to give the braking unit both the function of being a component that causes the spool to receive an appropriate braking force through the braking unit and the function of being a detected unit for detecting the rotation of the spool, without additionally providing a detected unit. As a result, it is possible to accurately and effectively avoid the enlargement or high cost of the fishing reel, and the increase in the inertia of the spool.

[0055] In addition, by avoiding the increase in the inertia of the spool, it is possible to increase the throwable distance, improve the operability when throwing a light bait, etc. In addition, since one component has both the function of a detected unit and a braking unit, in the case of using a plurality of replaceable spools with different diameters, one type of inductive rotor can be shared regardless of the type of spool, so that the interchangeability can be improved.

[0056] Also, in the fishing reel 1 according to an embodiment of the present invention, by using the end face of the braked portion as the detected portion of the rotation detection sensor, the rotation detection sensor (photoelectric sensor) can be arranged radially of the braking portion between the magnets. As a result, the substrate and the rotation detection portion can be arranged close to each other, and thus waterproofing treatment can be easily performed. In addition, the structural members for generating braking force and the structural members for performing rotation detection can be arranged on the same side of the spool, and thus unitization of the braking device can be easily achieved. In particular, in the case of adopting a mechanism that drives a rotating magnet by a motor, significant effects are achieved in terms of ease of performing waterproofing treatment and unitization of the braking device. Also, in the fishing reel 1 according to an embodiment of the present invention, since the detected portion of the rotation detection sensor can be arranged between the rotating magnet and the fixed magnet, the diameter of the braked portion can be made smaller than the diameter of the rotating magnet. As a result, even when the diameter of the spool is small and there is no space on the outer diameter side of the rotating magnet, the detected portion of the rotation detection sensor can be arranged on the same side as the braking portion (braking unit). Also, in the fishing reel 1 according to an embodiment of the present invention, a photoelectric sensor or a capacitive proximity sensor can be used as the detection portion. As a result, different from the case of using a magnetic sensor as the detection portion, it is not affected by the magnetic field of the braking portion, and thus stable rotation detection can be performed.

[0057] 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 in the scope of the present invention. In addition, 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 for a fishing reel, characterized in that, the braking device for the fishing reel has: a braked part, which is installed on a spool capable of winding fishing line and is composed of a conductor; a braking part, which generates a braking force by applying a magnetic field to the braked part; a detected part, which is arranged on the braked part; and a rotation detection sensor, which detects the rotation of the spool by detecting the detected part, using the end face of the braked part as the detected part for the rotation detection sensor to endow the braked part with both the function of a component that enables the spool to bear an appropriate braking force through the braking part and the function of the detected part for detecting the rotation of the spool.

2. The braking device for a fishing reel according to claim 1, wherein, the rotation detection sensor is a reflective photoelectric sensor, and the detected part is arranged on the braked part by performing two surface treatments with different reflectivities on the end face of the braked part.

3. The braking device for a fishing reel according to claim 1, wherein, the rotation detection sensor is a transmissive photoelectric sensor, and the detected part is arranged on the braked part by alternately arranging light-shielding parts and transmissive parts on the braked part.

4. The braking device for a fishing reel according to claim 1, wherein, the rotation detection sensor is a capacitive proximity sensor, and the detected part is arranged on the braked part by forming concave parts and convex parts on the surface facing the rotation detection sensor.

5. The braking device for a fishing reel according to any one of claims 1 to 4, wherein, the braking part is composed of two cylindrical magnets opposed to each other in the radial direction of the braking part, and the rotation detection sensor is arranged between the two cylindrical magnets when observed along the radial direction.

6. The braking device for a fishing reel according to claim 5, wherein, the braking part moves at least one of the two cylindrical magnets by a motor, so as to be able to adjust the braking force.

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

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