JP2008245551A - Spinning reel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a spinning reel which can smoothly rotate a spool in the early time of casting to improve a flying distance and can impart suitable braking force to the spool to effectively prevent backlashes, without having to unnecessarily lower the flying distance, at the final period of casting. <P>SOLUTION: Since a spring member 60 for energizing a conductor 40, in a direction separated from a magnetic field is formed in a tapered shape whose outer diameter is gradually enlarged in the axial direction of the spool 3 in the spinning reel 1, the energizing force of the spring member 60 acting on a mobile member 25 is gradually changed, without suddenly or stepwisely changing the energizing force in the final period of the casting when the rotation rate of the spool 3 is lowered. Hence, the conductor 40 is slowly separated from the magnetic field in a not suddenly changing state to impart proper braking force to the spool 3 in the final period of the casting. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a fishing reel provided with a magnetic braking device that applies a braking force to a spool rotatably supported by a reel body to prevent backlash during a fishing line releasing operation.

  Conventionally, in order to prevent a backlash phenomenon due to excessive rotation of the spool when fishing line is released (for example, during casting), a braking force is applied to the rotation of the spool. As a backlash prevention device that applies a braking force to the rotation of the spool, a centrifugal force braking device (centrifugal friction brake device) using a centrifugal force generated with the rotation of the spool and a magnetic braking device using a magnetic force are known. It has been. The centrifugal force braking device moves the braking plate that rotates integrally with the spool in the radial direction of the spool by centrifugal force accompanying the rotation of the spool, and makes sliding contact with a predetermined part of the reel body, and by the frictional force generated thereby. Apply braking force to the spool.

  The magnetic braking device positions a conductor rotating integrally with the spool in a magnetic field formed by a magnet, and applies a braking force to the rotation of the conductor by an electromagnetic force generated along with the rotation of the conductor. At the same time, a braking force is applied to the spool that rotates together with the conductor.

  However, in the centrifugal braking device, the frictional force generated by the centrifugal force (the frictional force generated between the braking piece moved by the centrifugal force and the reel body in sliding contact with the braking piece) is the square of the rotational speed of the spool. Acts in proportion to For this reason, when the rotation speed of the spool becomes equal to or greater than a predetermined value after the start of casting (the initial stage of casting), the frictional braking force suddenly increases and the rotation speed of the spool rapidly decreases. Therefore, the flying distance of the device is reduced. Also, when the rotation speed of the spool is reduced at the end of casting, the frictional resistance is greatly reduced, so that a backlash phenomenon is likely to occur. In this case, an appropriate summing operation is required, but such operation requires considerable skill and is very difficult for a beginner.

  On the other hand, in the magnetic braking device, the braking force acts substantially in proportion to the rotational speed of the spool, so that the braking force does not change greatly with respect to the change in the rotational speed of the spool unlike the centrifugal braking device. . Therefore, the backlash phenomenon hardly occurs and even a beginner can perform casting with peace of mind. However, a braking force corresponding to the spool rotation speed is always generated while the spool is rotating. Therefore, the braking force acts on the spool even at the end of casting when the spool rotation speed decreases, increasing the flying distance of the device. Absent.

Therefore, in order to solve the problems of both the centrifugal braking device and the magnetic braking device as described above, for example, Patent Document 1 eliminates the suppression of the spool rotation speed at the initial and final stages of casting and increases the flying distance of the device. In order to prevent the occurrence of backlash, the radial movement of the centrifugal collar is converted into the axial direction according to the rotational speed of the spool, and the electric conductor provided in the centrifugal collar resists the urging force and the magnetic field in the reel body. It is possible to move in and out.
Japanese Patent No. 3515875

  According to the configuration of Patent Document 1, while the spool is rotating at a low speed, the conductor is positioned outside the magnetic field by the action of the urging force, so that no braking force is generated on the spool. Therefore, at the initial rising of casting, unnecessary spool rotation is not suppressed, so that the rising is smooth and the flight distance can be improved as compared with the conventional magnetic braking device.

  However, at the end of casting, an urging force acts in the direction of moving the conductor away from the inside of the magnetic field. Therefore, when the rotation speed of the spool decreases, the conductor is suddenly returned to the outside of the magnetic field, and the braking force does not act. In particular, if the biasing force that biases the conductor is prioritized in favor of the smooth start-up of the casting, the conductor is more rapidly out of the magnetic field when the rotation speed of the spool falls below a predetermined speed. The braking force does not act suddenly. Therefore, in practice, a summing operation to prevent the occurrence of backlash must be performed at the end of casting, resulting in a brake on the last stretch and a satisfactory flight distance cannot be obtained. Occurs.

  Further, Patent Document 1 discloses an embodiment in which urging springs having different urging forces are provided in series in the moving direction of the conductor. In this case, the urging force is applied to the conductor at the end of casting. Acts in a stepwise manner, and the braking force also changes in a stepwise manner, so that the backlash phenomenon is likely to occur at the end of casting, resulting in problems such as not improving the flight distance. It is left.

  The present invention has been made paying attention to the above circumstances, and the purpose of the present invention is to improve the flight distance by smoothly rotating the spool at the initial stage of casting, and at the final stage of casting. An object of the present invention is to provide a fishing reel that can effectively prevent backlash by applying an appropriate braking force to the spool without unnecessarily reducing the flight distance.

  In order to solve the above-described problems, the present invention provides a conductor that is supported on one side of a spool that is rotatably provided on a reel body so as to be movable in the axial direction. By engaging and guiding the direction moving member and the axial direction conversion control surface provided on the spool side, the magnetic braking force on the spool can be increased or decreased by moving it back and forth with respect to the magnetic field of the magnet provided on the reel body. In a fishing reel comprising a magnetic braking device to be actuated, wherein the conductor is biased toward the spool side in a direction away from the magnetic field by a spring member, the spring member is directed in the axial direction of the spool. In other words, the taper shape is gradually increased in outer diameter.

  According to the fishing reel of the present invention, the spool can be smoothly rotated at the initial stage of casting to improve the flight distance, and at the final stage of casting, the spool is not unnecessarily reduced. The backlash can be effectively prevented by applying an appropriate braking force.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
1 to 4 show an embodiment of the present invention. As shown in FIG. 1, a double-bearing type reel 1 as a fishing reel according to this embodiment includes a left side plate 1a, a right side plate 1b, and left and right frames 2a, 2b covered by both side plates 1a, 1b. And a reel main body. A spool shaft 5 is rotatably supported between the left and right frames 2a and 2b via bearings 10 and 10, and a spool 3 around which a fishing line is wound is integrally fixed to the spool shaft 5. .

  A pinion gear (not shown) that can move along the axial direction of the spool shaft 5 is attached to the end of the spool shaft 5 that protrudes from the left frame 2a. The pinion gear is engaged with the spool shaft 5 by a known switching means (not shown), and is engaged with the spool shaft 5, and is disengaged from the spool shaft 5. Moved between. A drive gear (not shown) meshes with the pinion, and a handle 112 is attached to an end of a handle shaft (not shown) attached to the drive gear. Therefore, when the handle 112 is rotated, the spool shaft 5 is rotationally driven via the drive gear and the pinion gear, and the spool 3 is rotated accordingly.

  Further, a level wind device 15 is arranged between the left and right frames 2a and 2b on the fishing line feeding direction side of the spool 3. The level wind device 15 includes a traverse shaft (not shown) in which a traverse groove is formed on an outer peripheral surface and a gear meshing with the drive gear is attached to an end portion, and a cylindrical body 17 that accommodates the traverse shaft. An engaging member 18 that engages with the traverse groove and slides left and right along the cylindrical body 17 by rotation of the traverse shaft is wound around the spool 3 through a hole 18 a formed in the engaging member 18. Guide the turned fishing line. Therefore, when the handle 112 is rotated, the fishing line is evenly wound around the spool 3 by the rotation of the spool 3 and the sliding of the engagement element 18 from side to side.

  Further, the double-bearing reel 1 of this embodiment includes a magnetic braking device 20 that prevents the spool 3 from over-rotating during the fishing line discharging operation. The magnetic braking device 20 has two annular bodies 11 and 12 made of a magnetic material. In this case, the first annular body 11 is fixed to the reel body, and the second annular body 12 is rotatably held by the reel body.

  The first annular body 11 has an annular first magnet holding portion 11 a that holds the bearing 10 that supports one end of the spool shaft 5 and extends inward along the axial direction of the spool shaft 5. The second annular body 12 has an annular second magnet holding portion 12a that is concentrically arranged outside the first magnet holding portion 11a.

  A plurality of magnets 13 are fixed to the outer peripheral surface of the first magnet holding portion 11a at a predetermined interval in the circumferential direction. Also, a plurality of magnets 14 are fixed to the inner peripheral surface of the second magnet holding portion 12a so as to face the magnets 13 located on the inner side at a predetermined interval in the circumferential direction. Yes.

  The magnets 13 held by the first magnet holding part 11a have different polarities on the side facing the magnets 14 held by the second magnet holding part 12a. Further, the magnets 14 held by the second magnet holding part 12a also have different polarities on the side facing the magnet 13 held by the first magnet holding part 11a.

  Moreover, the braking force adjustment knob 21 is rotatably provided on the right side plate 1b. A gear 22 that rotates integrally with the braking force adjusting knob 21 is fixed to the braking force adjusting knob 21, and the gear 22 meshes with teeth 19 formed on the outer peripheral surface of the second annular body 12. Accordingly, when the braking force adjusting knob 21 is rotated, the second annular body 12 is rotated with respect to the first annular body 11 via the gear 22, and the polar relationship between the magnets 13 and 14 facing each other ( N−N, N−S) and the amount of overlap change. That is, the direction and strength of the magnetic field formed by the magnets 13 and 14 are changed.

  Further, the magnetic braking device 20 includes a moving body 25 attached to the spool shaft 5 so as to be movable along the axial direction. As shown in detail in FIGS. 2 and 3, the moving body 25 is formed with a notch-shaped support portion 25b formed by extending in the radial direction at a predetermined interval. The centrifugal collar (radial direction moving member) 30 is supported so as to be movable in the radial direction. These centrifugal collars 30 are moved radially outward by the centrifugal force when the spool shaft 5 (and the moving body 25) rotates together with the spool 3. An annular conductor 40 is supported on the distal end side (right frame 2b side) of the moving body 25.

  Further, a tapered surface 62 is formed on the rear surface side of the fishing line winding surface of the spool 3 as an axial direction conversion control surface that gradually increases in diameter toward the right frame 2b side. The tapered surface 62 is brought into surface contact (engagement) with the inclined surface 30a formed on the outer surface of the centrifugal collar 30 when the centrifugal collar 30 moves radially outward so as to guide the movement of the centrifugal collar 30. It has become. That is, the centrifugal collar 30 supported by the moving body 25 is moved in the radial direction by the centrifugal force accompanying the rotation of the spool shaft 5 (spool 3), and is guided along the tapered surface 62. Is moved in the axial direction toward the right frame 2b (the radial movement of the centrifugal collar 30 is converted into the movement of the movable body 25 in the axial direction).

  Further, between the retainer 50 fixed to one end of the spool shaft 5 and the main body 25a of the moving body 25, the moving body 25 is always urged toward the spool 3 side away from the retainer 50 (conductor). A spring member 60 (which constantly urges 40 toward the spool 3 side in a direction away from the magnetic field of the magnets 13 and 14) is inserted. And in the 1st Embodiment of this invention, this spring member 60 is formed in the taper shape from which an outer diameter becomes large gradually toward the magnets 13 and 14 side from the spool 3 side. That is, the spring member 60 has the smallest outer diameter at one end supported by the main body 25a of the movable body 25 and the largest outer diameter at the other end supported by the retainer 50. It spreads in a so-called trumpet shape from the side toward the magnets 13 and 14. Therefore, the urging force (restoring force) of the spring member 60 is weak at the beginning of contraction, and the urging force (restoring force) gradually increases as the amount of contraction increases.

  Next, the operation of the double-bearing type reel 1 having the above configuration will be described.

  For example, when the spool 3 is rotated by casting, the moving body 25 is also rotated integrally with the spool 3. Since the centrifugal force acting on the centrifugal collar 30 is weak until the rotational speed of the spool 3 reaches a predetermined magnitude immediately after the start of casting, the pressing force of the centrifugal collar 30 against the tapered surface 62 of the spool 3 Is smaller than the biasing force of the spring member 60. Therefore, as shown in FIGS. 2 and 3, the moving body 25 maintains substantially the same position as when the spool 3 is stopped, while hardly moving in the axial direction with respect to the spool shaft 5. That is, the conductor 40 attached to the moving body 25 does not enter the annular space formed between the magnets 13 and 14, and no braking force (magnetic braking force) due to magnetism acts on the spool 3. As a result, the spool 3 rotates freely (the rotational speed of the spool 3 improves), and the amount of fishing line thrown out, that is, the flying distance of the device increases.

  Thereafter, when the rotational speed of the spool 3 increases and the centrifugal force acting on the centrifugal collar 30 exceeds a predetermined magnitude, that is, the axial component of the pressing force of the centrifugal collar 30 against the tapered surface 62 of the spool 3 is a spring. When it becomes larger than the urging force of the member 60, the moving body 25 starts to move relative to the spool shaft 5 against the urging force of the spring member 60 due to the engagement guide action of the centrifugal collar 30 and the tapered surface 62. As a result of this movement, when the conductor 40 enters the annular space (magnetic field) formed between the magnets 13 and 14 as shown in FIG. 4, the conductor 40 has its penetration amount (movement amount) and rotational speed. The force corresponding to the is received from the magnetic field. Therefore, the braking force associated with this force also acts on the spool 3 that rotates integrally with the conductor 40. That is, the magnetic braking force according to the rotational speed of the spool 3 can be increased or decreased. As a result, the spool 3 is prevented from over-rotating and the backlash phenomenon is suppressed.

  Further, at the end of casting, when the rotational speed of the spool 3 decreases and the centrifugal force acting on the centrifugal collar 30 becomes weak, that is, the axial component of the pressing force of the centrifugal collar 30 against the tapered surface 62 of the spool 3 is spring. When it becomes smaller than the urging force of the member 60, the moving body 25 starts to return toward the initial position by the urging force of the spring member 60. Thereby, the conductor 40 gradually escapes from the annular space (magnetic field) formed between the magnets 13 and 14, and the force received from the magnetic field gradually decreases. Here, in this embodiment, the taper-shaped spring member 60 having a property (a characteristic of changing the spring constant) that is weak at the beginning of the contraction and becomes stronger as the contraction is provided in an arrangement form having a large diameter toward the magnets 13 and 14 side. Therefore, at the end of casting when the rotation speed of the spool 3 decreases, the conductor 40 that receives the urging force of the spring member 60 slowly leaves the magnetic field without a sudden change. Therefore, an appropriate braking force is applied to the spool 3 at the end of casting. Therefore, unnecessary summing operation can be avoided and the flight distance can be improved. That is, at the end of casting, it is possible to effectively prevent backlash by applying an appropriate braking force to the spool without unnecessarily reducing the flight distance. it can).

  In the first embodiment, the spring member 60 is a tapered spring having an outer diameter that gradually increases from the spool 3 side toward the magnets 13 and 14, but conversely, on the magnet 13 and 14 side. A taper spring whose outer diameter increases toward the spool 3 may be configured as an urging means for the conductor 40.

  As described above, in the fishing reel 1 of the present embodiment, the spring member 60 that urges the conductor 40 in the direction away from the magnetic field gradually increases the outer diameter toward the axial direction of the spool shaft 5. Is formed in a tapered shape (the outer diameter gradually increases toward the magnets 13 and 14 or the spool 3 side), and therefore, at the end of casting when the rotation speed of the spool 3 decreases, the moving body 25 The urging force of the spring member 60 acting on the gradual change does not change abruptly or stepwise and changes gradually. Therefore, the conductor 40 is slowly separated from the inside of the magnetic field without a sudden change, and an appropriate braking force is applied to the spool 3 at the end of casting. In other words, by adopting a taper spring having a spring constant change characteristic as a biasing means for a conductor that moves forward and backward in the magnetic field according to the spool rotation speed, the flight distance is unnecessarily reduced at the end of casting. Therefore, it is possible to effectively prevent backlash by applying an appropriate braking force to the spool 3.

It is a schematic block diagram which has a partial cross section of the fishing reel which concerns on one Embodiment of this invention. It is sectional drawing of the principal part of the fishing reel of FIG. 1 (at the time of braking force non-operation). It is an expanded sectional view of the area | region enclosed with the dashed-two dotted line circle of FIG. It is sectional drawing of the principal part of the fishing reel of FIG. 1 (at the time of braking force effect | action).

Explanation of symbols

1 Reel for fishing 3 Spool 13, 14 Magnet 30 Centrifugal collar (radially moving member)
40 Conductor 60 Spring member 62 Tapered surface (Axial direction conversion control surface)

Claims (1)

A radial moving member that moves in the radial direction by the rotation of the spool, and an axial direction conversion that is provided on the spool side, with the conductor supported to be axially movable on one side of the spool rotatably provided on the reel unit. A magnetic braking device that causes the magnetic braking force to act on the spool so that the magnetic braking force can be increased or decreased by moving forward and backward with respect to the magnetic field of the magnet provided on the reel body by engaging and guiding the control surface, In the fishing reel that is biased toward the spool toward the direction away from the magnetic field by a spring member,
The fishing reel according to claim 1, wherein the spring member is formed in a tapered shape having an outer diameter that gradually increases in an axial direction of the spool.

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