JP6829018B2 - Double bearing reel - Google Patents

Description

The present invention relates to both bearing reels, in particular a double bearing reel having a braking device for braking the spool.

In a double-bearing reel in which the spool rotates when the fishing line is unwound, the rotation speed of the spool becomes faster than the thread feeding speed at the time of casting, the fishing line sags and causes thread slack, and the thread is entangled, so-called backlash occurs. If the inertia of the spool is large, it is difficult for the spool to rotate with the throwing of the device, the flight distance does not increase, and the speed does not easily decrease even when braking force is applied, and backlash is likely to occur. Therefore, it is known that a through hole is formed in the bobbin body of the spool to reduce the amount of inertia of the spool.

Further, those provided with a braking device for applying a braking force to the rotating spool are provided. For example, in the braking device of Patent Document 1, a non-magnetic conductive ring is fixed to a spool shaft, and an eddy current is generated by a magnet arranged to face the conductive ring to brake the rotation of the spool.

Real fairness 02-033762

In such a braking device, when the distance between the conductor and the magnet is large, the eddy current may not be sufficiently generated and the required braking force may not be obtained. When the distance between the conductor and the magnet is reduced, the braking force becomes large, but if the clearance is too small, the conductor and the magnet may come into contact with each other. Further, if the diameter of the conductor is increased in order to increase the braking torque, the amount of inertia increases, so that backlash is more likely to occur.

An object of the present invention is to suppress an increase in the amount of inertia of the spool in a double-bearing reel having a braking device for braking the spool, and to apply a braking force according to the rotation of the spool to the spool while maintaining a clearance between a conductor and a magnet. It is to be able to give it properly.

The double bearing reel according to one aspect of the present invention includes a reel body, a spool shaft, a spool, and a braking device for braking the spool. The spool shaft is rotatably supported by the reel body. The spool is non-rotatably mounted on the spool shaft and has a bobbin body around which fishing thread can be wound. The braking device has a plurality of magnets that face a part of the spool and are arranged in a Halbach array, and brakes the spool by a magnetic force on a part of the spool of the magnets.

In this double-bearing reel, since a plurality of magnets are arranged in a Halbach array in which the magnetizing directions of the magnets arranged facing a part of the spool differ by 90 degrees, the magnetic field is concentrated on one side of the magnets. To do. As a result, a larger braking force can be obtained.

Preferably, the spool has a tubular shaft mounting portion through which the spool shaft penetrates, and a connecting wall portion that connects the bobbin body portion and the shaft mounting portion. The plurality of magnets are arranged so as to face the connecting wall portion. Also in this case, since the magnetic field is concentrated on one side of the magnet, a larger braking force can be obtained. Further, a through hole can be provided in the entire bobbin body, and the amount of inertia of the spool can be further reduced.

Preferably, the plurality of magnets are arranged so as to face the bobbin body. Also in this case, since the magnetic field is concentrated on one side of the magnet, a larger braking force can be obtained.

Preferably, the spool has a first flange portion formed at one end of the spool body portion having a diameter larger than that of the spool body portion, and a second flange formed at the other end of the spool body portion having a diameter larger than that of the spool body portion. It has a portion and a flange portion extending in the axial direction from the tip of the first flange portion. The plurality of magnets are arranged so as to face the flange portion. Also in this case, since the magnetic field is concentrated on one side of the magnet, a larger braking force can be obtained.

Preferably, the braking device has a magnet mounting member for mounting a plurality of magnets.

Preferably, the braking device relatively moves the magnet mounting member based on the magnetic force, and changes the action of the magnetic force in response to the movement of the magnet mounting member. As a result, a braking force corresponding to the rotation of the spool can be appropriately applied to the spool.

Preferably, the braking device further comprises an adjusting member that adjusts the braking force by moving the magnet mounting member in the axial direction. Thereby, the braking force can be easily adjusted.

According to the present invention, it is possible to suppress an increase in the amount of inertia of the spool and appropriately apply a braking force according to the rotation of the spool to the spool without increasing the configuration of the braking device.

Side view of both bearing reels in which the first embodiment of the present invention is adopted. Cross-sectional view of both bearing reels in which the first embodiment of the present invention is adopted. An exploded perspective view of both bearing reels including a braking device. Enlarged sectional view of both bearing reels including a braking device. Partially enlarged view of the braking device. The figure which showed the magnetic field line when magnets were arranged in a Halbach array Side view of the braking device. The figure which showed an example of the side view of the braking device when the spool rotates. Sectional view of the second embodiment An exploded perspective view of both bearing reels including the braking device of the second embodiment. The front view of the magnet mounting member of the 2nd Embodiment. The figure of the spool in the 3rd Embodiment.

[First Embodiment]
<Overall configuration of both bearing reels>
1 and 2 show a side view and a cross-sectional view of both bearing reels in which the first embodiment of the present invention is adopted. These two bearing reels include a reel body 1, a spool 2 arranged inside the reel body 1, a spool shaft 3 rotatably supported by the reel body 1, and a spool arranged on the side of the reel body 1. A rotation handle 4 of 2 and a braking device 5 for braking the rotation of the spool 2 are provided.

As shown in FIG. 2, the reel body 1 includes a frame 6, a first side cover 7 and a second side cover 8 mounted on both sides of the frame 6, and a thumb rest (not shown) mounted on the upper part of the frame 6. have. The frame 6 has a pair of first side plates 9 and second side plates 10 arranged so as to face each other at predetermined intervals, and a plurality of connecting portions (not shown) that connect them.

As shown in FIG. 3, a plurality of (for example, three) fixing boss portions 7a for fixing the shaft support portions 11 that support one end of the spool shaft 3 are formed on the inner surface of the first side cover 7. There is. The shaft support portion 11 has a substantially cylindrical shape, and has a cylindrical portion 11a for accommodating the spool shaft 3 in the center. A bearing 12a for rotatably supporting one end of the spool shaft 3 is arranged in the cylindrical portion 11a. A braking device 5 is arranged inside the shaft support portion 11 (on the handle 4 side). Further, the bottom surface of the shaft support portion 11 is orthogonal to the spool shaft 3, and the bottom surface of the shaft support portion 11 has a hole 11b through which a screw member 13 for fixing the shaft support portion 11 penetrates, and a support described later. An elongated hole 11c into which the locking portion 23 of the member 20 is inserted is provided.

As shown in FIGS. 2 and 4, the spool 2 has a tubular bobbin body 14 around which fishing line can be wound, a tubular shaft mounting portion 15 fixed to the spool shaft 3, and a pincushion body 14 and a shaft. It has a connecting wall portion 16 that connects the mounting portion 15. In the spool 2, the shaft mounting portion 15 and the spool shaft 3 are coupled by, for example, serrations so that the spool shaft 3 cannot rotate with respect to the spool shaft 3 penetrating the shaft mounting portion 15. The spool 2 is made of, for example, an aluminum alloy and is a non-magnetic electric conductor.

The bobbin body 14 is formed so as to have a space on the inner peripheral side. Further, as shown in FIG. 3, a plurality of circular through holes 17 and elliptical through holes 18 are formed in the spool body 14 at regular intervals in order to reduce the weight of the spool 2. Has been done.

As shown in FIGS. 2 and 4, the connecting wall portion 16 connects the bobbin body portion 14 and the shaft mounting portion 15 and is formed in a disk shape. The connecting wall portion 16 has a thicker wall thickness on the outer peripheral side than on the inner peripheral side. More specifically, the outer peripheral side of the first side surface 16a on the side facing the magnet 27, which will be described later, is inclined so as to be closer to the magnet 27 than the inner peripheral side. The second side surface 16b opposite to the first side surface 16a is formed so as to be orthogonal to the rotation axis.

One end of the spool shaft 3 is rotatably supported by a bearing 12a arranged on the shaft support portion 11. The other end of the spool shaft 3 penetrates the second side plate 10 and extends outward to the second side cover 8, and is rotatably supported by the boss portion 19 formed on the second side cover 8 by the bearing 12b. Has been done.

The handle 4 has a plate-shaped arm portion 4a and a pair of grip portions 4b rotatably attached to both ends of the arm portion 4a.

<Structure of braking device 5>
The braking device 5 is for braking the rotation of the spool 2 rotatably mounted on the reel body 1. As shown in FIG. 3, the braking device 5 includes a support member 20, a pair of magnet mounting members 24, a plurality of magnets 27, two spring members 28, and a fixing plate 29.

The support member 20 has a substantially cylindrical shape, and its central axis coincides with the central axis (rotational axis) of the spool shaft 3. The support member 20 is arranged so as to cover the outer periphery of the cylindrical portion 11a of the shaft support portion 11, and is movable in the axial direction. A pair of protrusions 21 and a pair of holding claws 22 are formed on the outer peripheral surface of the support member 20. The pair of protrusions 21 project outward in the radial direction and are formed at positions facing each other. Further, each protrusion 21 is formed with a hole 21a penetrating in the axial direction. The pair of holding claws 22 project radially between the pair of protrusions 21 in the circumferential direction and are formed at positions facing each other. Further, the support member 20 has a pair of locking portions 23 extending in the direction of the first side cover 7. The locking portion 23 is inserted into the elongated hole 11c formed in the shaft support portion 11. As a result, the support member 20 can move in the axial direction and cannot rotate. A protrusion 23a is formed on the outer peripheral surface of the tip of one of the locking portions 23.

The pair of magnet mounting members 24 are arranged at intervals in the circumferential direction. Each magnet mounting member 24 is formed in an arc shape extending in the circumferential direction, and has a support portion 25 and an engaging portion 26.

The support portion 25 is provided on the first end side in the longitudinal direction of the magnet mounting member 24, and has cylindrical protrusions 25a on both end surfaces in the axial direction. The protrusion 25a is inserted into a hole 21a formed in the protrusion 21 of the support member 20 and a through hole 29a of the fixing plate 29 described later. As a result, the magnet mounting member 24 is supported by the support member 20 and the fixing plate 29, and is rotatable between the first position on the inner peripheral side and the second position on the outer peripheral side.

The engaging portion 26 is provided on the second end side (opposite side of the first end) of the magnet mounting member 24 in the longitudinal direction. The engaging portion 26 engages with the holding claw 22 of the support member 20 to regulate the rotation range of the magnet mounting member 24. Further, the engaging portion 26 is provided with a protrusion 26c for mounting the spring member 28.

Here, the holding claw 22 of the support member 20 and the engaging portion 26 of the magnet mounting member 24 will be described in detail. As shown enlarged in FIG. 5, the holding claw 22 of the support member 20 has an outer peripheral portion 22a extending in the circumferential direction and a stopper portion 22b extending from the tip of the outer peripheral portion 22a to the inner peripheral side. .. With such a configuration, a space A is formed on the inner peripheral side of the outer peripheral portion 22a.

On the other hand, the engaging portion 26 has an inner peripheral portion 26a extending from the second end of the magnet mounting member 24 and a stopper portion 26b extending from the tip end of the inner peripheral portion 26a to the outer peripheral side. The stopper portion 26b of the engaging portion 26 is arranged so as to enter the space A formed in the holding claw 22 of the support member 20, and the stopper portions 22b and 26b face each other.

The plurality of magnets 27 are fitted and fixed to the magnet mounting member 24, and are integrally provided on the magnet mounting member 24. As shown in FIGS. 3, 4 and 7, the plurality of magnets 27 are arranged in the circumferential direction at regular intervals so as to face the connecting wall portion 16. The magnet 27 is a rectangular parallelepiped permanent magnet having an N pole on one side and an S pole on the other side.

As shown in FIGS. 5 and 6, the magnets 27 are arranged here in a Halbach array. Specifically, five magnets 27a, 27b, 27c, 27d, 27e whose magnetizing directions are changed by 90 degrees are arranged. Specifically, the first magnet 27a closest to the support portion 25 is arranged so that only the surface of the S pole faces the connecting wall portion 16. The second magnet 27b is arranged so that the S pole and the N pole face the connecting wall portion 16 by rotating the first magnet 27a by 90 degrees. The third magnet 27c is arranged so that only the surface of the north pole faces the connecting wall portion 16 by rotating the second magnet 27b by 90 degrees. The fourth magnet 27e is arranged so that the north pole and the south pole face the connecting wall portion 16 by rotating the third magnet 27c by 90 degrees. The fifth magnet is arranged so that only the surface of the S pole faces the connecting wall portion 16 by rotating the fourth magnet 27d by 90 degrees.

By forming the Halbach array and arranging the magnets 27 in this way, the magnetic field can be concentrated on one side of the magnets as shown in FIG. As a result, a larger braking force can be obtained as compared with the case where the north pole and the south pole are arranged alternately. Further, since a strong magnetic field is generated farther away, a magnetic force can be applied to the annular side wall portion 114a even if the distance between the magnet 27 and the connecting wall portion 16 is set to some extent.

The spring member 28 is a coil spring as shown in FIG. 5, and is arranged between the stopper portion 26b of the engaging portion 26 of the magnet mounting member 24 and the stopper portion 22b of the holding claw 22 of the support member 20. There is. The spring member 28 is supported by a protrusion 26c that protrudes from the engaging portion 26. The spring member 28 urges the engaging portion 26 of the magnet mounting member 24 toward the inner peripheral side.

The fixing plate 29 is a substantially circular plate-shaped member, and a through hole 29a through which the spool shaft 3 passes is formed in the center, and a through hole that engages with the protrusion 25a of the magnet mounting member 24 is formed on the outer peripheral side. ing. The fixing plate 29 is fixed to the support member 20 by the screw member 30.

<Adjusting member 31>
The adjusting member 31 adjusts the braking force of the braking device 5, and adjusts the braking force by moving the support member 20 in the axial direction. As shown in FIG. 3, the adjusting member 31 is formed in a bottomed tubular shape. Further, as shown in FIG. 2, the adjusting member 31 is attached to the shaft support portion 11 by the screw member 32, and is in a state of being exposed by about half when viewed from the first side cover 7 side. A spiral groove 31b is formed on the outer peripheral surface of the tubular portion 31a of the adjusting member 31. As shown in FIG. 4, the spiral groove 31b meshes with the protrusion 23a of the locking portion 23 of the support member 20. As a result, when the adjusting member 31 is turned clockwise, the braking device 5 having the support member 20 moves in the direction approaching the connecting wall portion 16, so that the braking force becomes stronger. On the contrary, when the adjusting member 31 is turned counterclockwise, the braking device 5 moves in a direction away from the connecting wall portion 16, so that the braking force is weakened. The braking force can be easily adjusted by the adjusting member 31.

<Operation of braking device 5 when spool rotates>
Next, the operation of the braking device 5 when the fishing line is cast will be described with reference to FIGS. 7 and 8. FIG. 7 shows a state when the spool 2 is not rotating, and FIG. 8 shows a state when the spool 2 is rotating at a relatively high speed.

When the spool 2 rotates, an eddy current corresponding to the rotation speed is generated in the spool 2 due to the magnetic flux of the magnet 27 facing the connecting wall portion 16 of the spool 2 which is a conductor. Due to this eddy current, a force in the direction opposite to the rotation direction is applied to the spool 2. As a result, the spool 2 is braked.

Further, the braking device 5 relatively moves the magnet mounting member 24 based on the magnetic force of the magnet 27, and changes the action of the magnetic force according to the movement of the magnet mounting member 24. Specifically, in a state where the spool 2 is braked by the generation of an eddy current, a reaction force corresponding to the braking force acts on the magnet 27. When the second end (engaging portion 26 side) of the magnet mounting member 24 moves to the second position side (position in FIG. 7) on the outer peripheral side due to this reaction force, the magnet 27 that generates the braking force moves to the outer peripheral side. Therefore, the braking force becomes large. Here, when the fishing line is cast, the connecting wall portion 16 facing the magnet 27 rotates in the direction in which the spring member 28 contracts.

Further, the connecting wall portion 16 is inclined so that the outer peripheral side of the magnet 27, that is, the outer peripheral side of the first side surface 16a on the side facing the magnet 27 is closer to the magnet 27. As a result, when the magnet 27 moves to the second position side on the outer peripheral side, the distance between the magnet 27 and the connecting wall portion 16 becomes closer. Therefore, the braking force becomes larger as the rotation of the spool 2 becomes faster. On the other hand, when the spool 2 rotates at a low speed, the braking force becomes small. Therefore, it is possible to suppress the thread dandruff due to backlash while extending the flight distance during casting, and it is possible to realize a more practical braking function.

Further, since the spool 2 is braked by making the connecting wall portion 16 and the magnet 27 face each other, a through hole 17 can be provided as a whole of the spool body portion 14. Therefore, the weight of the spool 2 can be reduced.

The second side surface 16b opposite to the first side surface 16a of the connecting wall portion 16 in the axial direction has a planar shape orthogonal to the axial direction. As a result, it is possible to avoid an increase in the wall thickness of the connecting wall portion 16, and it is possible to reduce the weight of the spool 2.

[Second Embodiment]
9 and 10 show a partial cross-sectional view including a braking device 115 of both bearing reels in which the second embodiment of the present invention is adopted, and an exploded perspective view. Since the overall configuration of both bearing reels in the second embodiment is the same as that in the first embodiment, the description thereof will be omitted. Hereinafter, configurations different from those of the first embodiment will be mainly described. The same reference numerals are given to the same configurations as those in the first embodiment.

<About spool 112>
The spool 112 in the second embodiment has a tubular spool body 114 around which fishing line can be wound, a tubular shaft mounting portion 15 fixed to the spool shaft 3, and a spool body 114 and a shaft mounting portion 15. It has a connecting wall portion 116 for connecting. Since the shaft mounting portion 15 has the same configuration as that of the first embodiment, the description thereof will be omitted. Similar to the first embodiment, the spool 112 has the shaft mounting portion 15 and the spool shaft 3 coupled by, for example, serrations so that the spool shaft 3 cannot rotate with respect to the spool shaft 3 penetrating the shaft mounting portion 15. The spool 2 is made of, for example, an aluminum alloy and is a non-magnetic electric conductor.

A plurality of circular through holes 17 and elliptical through holes 18 are formed in the bobbin body 114 at regular intervals. Further, at one end of the spool body portion on the shaft support portion 11 side (left side in FIG. 9), an annular side wall portion 114a in which the through hole 17 is not formed is provided. In the second embodiment, a magnet is opposed to the annular side wall portion 114a to brake the rotation of the spool 112. The connecting wall portion 116 is formed with a uniform wall thickness and is orthogonal to the rotation axis.

<About the configuration of the braking device 105>
The configuration of the braking device 105 is different from that of the first embodiment in the position where the plurality of magnets 127 are arranged. Specifically, the magnets 127 are arranged side by side on the outer peripheral surface of the magnet mounting member 124 at regular intervals in the circumferential direction so as to face the annular side wall portion 114a. That is, the magnet 127 is arranged at a position facing the annular side wall portion 114a. Therefore, in the second embodiment, the rotation of the spool is braked based on the magnetic force of the magnet 127 acting on the annular side wall portion 114a.

As shown in FIG. 11, also in the second embodiment, the magnets 127 are arranged in a Halbach array. That is, five magnets 127a, 127b, 127c, 127d, 127e whose magnetizing directions are changed by 90 degrees are arranged on the outer peripheral surface of the magnet mounting member 124. As a result, the magnetic field can be concentrated on one side of the magnet, so that a larger braking force can be obtained as compared with the case where the north pole and the south pole are arranged alternately. Further, since a strong magnetic field is generated far away, the magnetic force can be applied to the annular side wall portion 114a even if the distance between the magnet 127 and the annular side wall portion 114a is separated to some extent.

<Operation of braking device 105 when spool rotates>
In the braking device 105 as well, as in the first embodiment, when the spool 102 is braked by the generation of eddy current, a reaction force corresponding to the braking force acts on the magnet 127. When the second end (engagement portion 26 side) of the magnet mounting member 124 moves to the second position side on the outer peripheral side (position in FIG. 8 as in the first embodiment) due to this reaction force, a braking force is generated. The magnet 27 moves to the outer peripheral side. As a result, the distance between the magnet 127 and the annular side wall portion 114a is reduced, so that the braking force is increased.

Here, when the spool 102 rotates at a high speed, the reaction force corresponding to the braking force becomes large, and the distance between the magnet 127 and the annular side wall portion 114a becomes close, so that the braking force becomes large. On the other hand, when the spool 102 rotates at a low speed, the distance from the annular side wall portion 114a does not change so much, so that the braking force becomes small. Therefore, it is possible to suppress the thread dandruff due to backlash while extending the flight distance during casting, and it is possible to realize a more practical braking function.

[Third Embodiment]
FIG. 12 shows a perspective view of the spool 202 of the double bearing reel in which the third embodiment of the present invention is adopted. In both bearing reels in the third embodiment, a flange portion 35 is formed on the spool 202, and the flange portion 35 and the magnet 127 are opposed to each other to brake the rotation of the spool 202. Other than that, it is the same as the configuration of the second embodiment. Therefore, the description of the same configuration as that of the first and second embodiments will be omitted. The same components as those in the first and second embodiments are designated by the same reference numerals.

The spool 202 has a first flange portion 33, a second flange portion 34, and a flange portion 35. The first flange portion 12 is formed at one end (right side in FIG. 12) of the spool body portion 14 so as to have a diameter larger than the outer diameter of the spool body portion 14. The second flange portion 34 is formed at the other end (left side in FIG. 12) of the spool body portion 14 to have a diameter larger than the outer diameter of the spool body portion 14. Here, the outer diameters of the first flange portion 33 and the second flange portion 34 are the same.

The flange portion 35 is formed so as to extend further outward in the axial direction (right side in FIG. 12) from the tip of the outer peripheral portion of the first flange portion 33. Further, the flange portion 35 is formed only on the first flange portion 33 in order to suppress an increase in the amount of inertia of the spool 202. Therefore, the spool 202 has a left-right asymmetric shape.

In the third embodiment, the braking device 105 in the second embodiment is opposed to a part of the flange portion 35 of the spool to brake the spool 202. In this case, since the flange portion 35 away from the rotation center of the spool 202 is used as the conductor, a larger braking force can be obtained as compared with the case where the conductor is provided near the rotation center of the spool 202.

[Other Embodiments]
The present invention is not limited to the above embodiments, and various modifications or modifications can be made without departing from the scope of the present invention.

(A) In the above embodiment, the spools 2, 102 and 202 are used as the conductors, but the spool 2 is an example of the conductor, and the first side surface 16a of the connecting wall portion 16 and the inner peripheral surface of the annular side wall portion 114a. And only the inner peripheral surface of the flange portion 35 may be used as the conductor, or a magnetic material may be provided at these positions.

(B) In the above embodiment, five magnets 27, 127 are arranged on the magnet mounting members 24, 124, but the number, spacing, size, and shape of the magnets 27, 127 can be arbitrarily changed.

1 Reel body 2,102,202 Spool 3 Spool shaft 5,105 Braking device 11 Shaft support part 14,114 Thread winding body part 15 Shaft mounting part 16 Connecting wall part 16a First side surface 16b Second side surface 20 Support member 22 Holding claw 23 Locking part 23a Protrusion 24, 124 Magnet mounting member 25 Support part 26 Engaging part 27,127 Magnet 28 Spring member 31 Adjusting member 31b Spiral groove 33 First flange part 34 Second flange part 35 Flange part 114a Ancillary side wall part

Claims (5)

With the reel body
A spool shaft rotatably supported by the reel body and
A spool that is non-rotatably mounted on the spool shaft and has a spool body around which fishing thread can be wound.
A braking device having a plurality of magnets facing a part of the spool and arranged in a Halbach array, and braking the spool by the magnetic force of the magnet on the part of the spool.
Equipped with a,
The braking device has a magnet mounting member for mounting the plurality of magnets, moves the magnet mounting member to the outer peripheral side based on the magnetic force, and acts of the magnetic force in response to the movement of the magnet mounting member. To change,
Double bearing reel. The spool has a tubular shaft mounting portion through which the spool shaft penetrates, and a connecting wall portion that connects the spool body portion and the shaft mounting portion.
The plurality of magnets are arranged so as to face the connecting wall portion.
The double bearing reel according to claim 1. The double bearing reel according to claim 1, wherein the plurality of magnets are arranged so as to face the bobbin body. The spool has a first flange portion formed at one end of the spool body portion having a diameter larger than that of the spool body portion, and a first flange portion formed at the other end of the spool body portion having a diameter larger than that of the spool body portion. It has two flanges and a flange that extends axially from the tip of the first flange.
The plurality of magnets are arranged so as to face the flange portion.
The double bearing reel according to claim 1. The double-bearing reel according to any one of claims 1 to 4, wherein the braking device further includes an adjusting member that adjusts a braking force by moving the magnet mounting member in the axial direction.

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