JPH11299403A - Backlash preventing device in double bearing reel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase a braking performance in a backlash preventing device in a double bearing reel. SOLUTION: This backlash preventing device in a double bearing reel is provided by spanning a spool 4 between side boards 2, 3 of a reel main body as freely rotatable, arranging a disc 34 consisting of an electroconductive material and at least one magnetic body 33 closely as opposing, and energizing the magnetic body 33 in a centripetal direction centered around the rotation shaft center L of the spool 4 by an elasticity of an energizing means 22. By a centrifugal force accompanying with the rotation of the spool 4, the magnetic body 33 can be transferred in a centrifugal direction as resisting to the elastic force.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a backlash prevention device utilizing magnets in a double bearing reel.

[0002]

2. Description of the Related Art Japanese Patent Laid-Open No. 9-3226 discloses a backlash prevention device utilizing magnets in a double bearing reel.
No. 78 discloses such a technique. This backlash prevention device arranges a pair of magnetic bodies so as to sandwich an annular conductor fixed so as to protrude in the axial direction so as to be integrally rotatable on a spool rotatably supported between reel side plates,
By moving the pair of magnetic bodies in the axial direction or rotating in the circumferential direction, the magnetic flux density acting on the annular conductor is adjusted. In general, reels that always apply magnetic braking force to the rotation of the spool are useful for beginners as they can prevent backlash, and if a veteran who has mastered summing etc. can increase the distance of fishing line. Although he is shunned because he cannot do it,
In the backlash prevention device of No. 8, the state in which the magnetic braking force does not act at all can be obtained by providing the annular conductor detachably on the spool.

In recent years, a ring-shaped conductor has been provided so as to be movable in the axial direction in accordance with the rotation speed of the spool. The spool can be rotated with no power applied at all, and when the spool is rotating at high speed, the annular conductor is allowed to penetrate into the magnetic flux between the magnetic bodies so that the spool can be rotated with the magnetic braking force applied. There has been proposed a backlash prevention device that can increase the flight distance of a fishing line without causing a backlash by a serious user.

[0004]

However, Japanese Patent Application Laid-Open No. Hei 9-3
In the backlash preventing device of No. 22678, in order to obtain a state in which the magnetic braking force does not act at all, it is necessary to take out the spool from the reel body, remove the conductor from the spool, and re-integrate the spool from which the conductor has been removed into the reel. In addition, there is a problem that not only the work is troublesome but also the removed conductor is easily lost or damaged.

[0005] The latter backlash prevention device is
The ring-shaped conductor is moved in the axial direction by a rotating centrifugal force that increases in accordance with the rotation speed of the spool, and is moved back and forth between the magnetic bodies. A large amount of motion conversion loss occurs because the conductor is moved in the axial direction, and the ring-shaped conductor is moved axially between a pair of magnetic bodies provided close to each other to advance and retreat. Assembly processing accuracy is required, and there is a problem in the reliability of operation.

[0006]

In order to solve the above problems, the invention of claim 1 is directed to a side plate (2, 2) of a reel body (1).
3) One end of a spool (4) rotatably supported between the side plate and the side plate (2) supporting one end of the spool (4).
In a backlash prevention device for a double-bearing reel in which a disk (34) made of a conductive material and at least one magnetic body (33) are arranged close to and opposed to each other, the magnetic body (33) may ) Can move in the centrifugal direction by the centrifugal force generated by the rotation of the spool (4) against the elastic force of the urging means (22) acting in the direction of the center of the axis of rotation (L). A backlash prevention device for a double bearing reel is provided at one end of the spool (4), and the disk (34) is attached to the side plate (2) so as to face the magnetic body (33).

[0007] The invention of claim 2 provides the magnetic material (3)
The backlash preventing device for a double-bearing reel according to claim 1, wherein a positioning means (38) for positioning and holding 3) at a predetermined distance from the rotation axis (L) of the spool (4) is provided.

According to a third aspect of the present invention, in the first aspect, there is provided a position adjusting means (44) for setting the magnetic body (33) at a desired distance from the rotation axis (L) of the spool (4). The described backlash prevention device for a double bearing reel is employed.

According to a fourth aspect of the present invention, the urging means (22) is provided.
The backlash prevention device for a double bearing reel according to any one of claims 1 to 3, further comprising an elastic force adjusting means (23) for adjusting the elastic force of the bearing reel.

According to a fifth aspect of the present invention, the disk (33)
Braking force adjusting means (3) provided between the side plate (2) and the side plate (2).
The backlash preventing device for a double bearing reel according to any one of claims 1 to 4, wherein the position of the disk (34) can be adjusted in the direction of the rotation axis (L) of the spool (4) by (7). I do.

[0011]

Next, an embodiment of the present invention will be described with reference to the drawings.

Embodiment 1 As shown in FIG. 1, a double bearing reel for fishing has a reel body 1, and side plates 2 and 3 are attached to left and right frame plates 1a and 1b, respectively. A spool 4 around which the fishing line is wound is rotatably supported between bearings 5 and 6 between the right frame plate 1b and the left side plate 2.

The spool 4 is connected to a handle 7 disposed outside the reel body 1 via a driving force transmission system described below. A handle shaft 7a and a pinion shaft 8 are supported in parallel between the frame plate 1b and the side plate 3. A handle 7 is integrally connected to one end of the handle shaft 7a, and a master gear 9 is mounted in the middle of the handle shaft 7a via a drag device 10 or the like. The master gear 9 rotates together with the handle 7 while receiving.

The pinion shaft 8 is disposed on an extension of the rotation axis L of the spool 4, and its left end is supported by a right frame plate 1b via a pinion 12 by a bearing 11a, and its right end is connected to the side plate 3 by a bearing 11b. Supported. The pinion shaft 8
, A pinion 12 is rotatably and slidably covered, and the master gear 9 meshes with the pinion 12.

[0015] Between the one end of the pinion 12 and one end of the spool 4, there is provided an engagement uneven portion 13 which is a clutch tooth. The engaging concave / convex portion 13 rotates the clutch cam 15 by operation of a clutch mechanism described later.
4 engages by sliding the pinion 12 on the pinion shaft 8, and separates when the clutch cam 15 rotates in the opposite direction.

When the engaging concave / convex portion 13 is engaged (the clutch mechanism is turned on), the spool 4 is prevented from free rotation, and the feeding of the fishing line from the spool 4 is stopped. Then, when the handle 7 is turned in the fishing line winding direction, the power is transmitted to the handle shaft 7a, the master gear 9, and the pinion 12 sequentially, and the spool 4 rotates to wind the fishing line. When the engaging concave / convex portion 13 separates (the clutch mechanism is turned off), the spool 4 becomes free, and the fishing line can be fed out,
Pay out the fishing line with the weight of the device.

A spool 4 is provided between the left and right frame plates 1a, 1b.
Is provided with a fishing line guide 19 for uniformly winding the fishing line. The fishing line guide 19 includes left and right frame plates 1a, 1b.
The traverse cam 21 is engaged with a guide bar (not shown) bridged between the traverse cam 21 and the handle shaft 7.
a through a gear train. When the handle 7 is turned to rotate the spool 4, the fishing line guide 19 reciprocates in the left-right direction of the reel at the same time, whereby the fishing line is wound on the spool 4 with a uniform thickness.

The clutch mechanism is turned on / off by a known switching device described below. The clutch cam 15 and the shifter 14 are arranged so as to surround the pinion 12, and the shifter 14 is
The clutch cam 15 is opposed to a cam piece (not shown).
Has been superimposed. The clutch cam 15 is mounted on the frame plate 1b.
The shifter 14 is rotatably supported on the pinion 12
In the annular groove. When the clutch cam 15 is turned in any direction on the frame plate 1b, the shifter 14 slides the pinion 12 in its axial direction to disengage the engaging uneven portion 13. This enables or disables transmission of power from the handle 7 to the spool 4. The shifter 14 is guided in the left-right direction on the axis of the pinion shaft 8 by a pin (not shown) provided on the reel body 1.

The clutch cam 15 is operated by operating a clutch lever 16 provided outside the reel. The clutch lever 16 is connected to the left and right frame plates 1a, 1
and b is rotatably suspended in the up-down direction, and is drivingly connected to the clutch cam 15 via a link mechanism including a lever 24 and the like. Clutch lever 16 and clutch cam 15
Is always urged in one direction by a spring (not shown), so that the clutch cam 15 stops rotating in the clutch ON direction and the clutch lever 16 rotates upward and stops.

As a result, when the clutch lever 16 is not pressed down by a finger, the shifter 14 stops at the position shown by the solid line in FIG. 1 and engages the engaging concave / convex portion 13 between the pinion 12 and the spool 4. Let it. Therefore, handle 7
Is turned, the spool 4 rotates in the winding direction. When the clutch lever 16 is pressed down by a finger, the clutch cam 15 rotates, and the cam piece 15a pushes the shifter 14 rightward in FIG. 1 against the urging force of the spring, and the shifter 14 moves rightward with the pinion 12. Move in the direction. For this reason, the engaging concave and convex portions 13 between the pinion 12 and the spool 4 are separated from each other, the spool 4 becomes free, and rotates in the feeding direction by the weight of the device.

As shown in FIG. 1, the spool 4 has a drum-shaped fishing line winding cylinder 4 on the outer periphery of a support cylinder 17 via a leg 18.
a is attached. A shaft piece 20 is fixed to the right end of the cylindrical shaft 17, and this shaft piece 20 is
b is supported via a bearing 5. At one end of the shaft piece 20, one uneven piece of the engaging uneven portion 13 is formed. The left end of the support cylinder 17 is supported via a bearing 6 on a spool support 27 on the left side plate 2. The spool support 27 is arranged so as to coincide with the rotation axis L of the spool 4, and is integrated with the side plate 2 via a frame member 28. Thus, the spool 4 is provided on both sides of the support cylinder 17 with the bearings 5 and 6.
It can rotate while being supported by.

The spool 4 can be removed from between the two frame plates 1a and 1b of the reel body 1 as described below. That is, the shaft piece 20 on the right side of the spool 4 is removably inserted into the inner race of the bearing 5. Also, the left frame plate 1a
The spool insertion hole 29 is formed with a diameter slightly larger than the outer diameter of the flange of the spool 4. The spool 4 is provided with a bearing 6, a spool support 27 and a frame member 28.
The spool insertion hole 2 is integrated with the side plate 2 through the
9, the paper is put in and out of the space between the two frame plates 1a and 1b.

The frame member 28 is fixed in the side plate 2 by a fixing screw 30. The frame member 28 has a boss portion 28a and a rim portion 28b arranged so as to surround the boss portion 28a. The boss portion 28a holds the spool support portion 27, and the rim portion 28b can open and close the spool insertion hole 29. Shielded. The frame member 28 is fixed to the frame plate 1a by a screw rod (not shown).
It is attached to and detached from. The screw rod penetrates the right side plate 3 and the left and right frame plates 1a and 1b in the left and right direction, the right end of the screw bar hits the right side plate 3 from the outer surface, and the left end screw portion is the frame member 2
8 is screwed.

As shown in FIGS. 2 to 5, the double bearing reel has a left end of a spool 4 and a side plate 2 opposed thereto.
And a backlash prevention device which is a spool braking means.

This backlash prevention device includes one end of a spool 4 and a side plate 2 that supports one end of the spool 4.
A disk 34 made of a conductive material and one or a plurality of magnetic bodies 33 are arranged close to and opposed to each other, and the magnetic bodies 33 act in a centrifugal direction about the rotation axis L of the spool 4. A disc 34 is attached to the side plate 2 at one end of the spool 4 so as to be movable in the centrifugal direction by the centrifugal force accompanying the rotation of the spool 4 against the elastic force of the urging means. Have been.

More specifically, two guide rods 25 extending in the radial direction of the spool 4 are symmetrically fixed to the left end of the support cylinder 17 of the spool 4, and each guide rod 25 is provided with a magnetic material 33.
Are slidably supported via a magnetic material holder 35. A stopper 25a is provided at the tip of the guide rod 25, and a compression coil spring 22 as an urging means is interposed between the stopper 25a and the magnetic holder 35. When the spool 4 rotates, the magnetic material 33 slides on the guide rod 25 in the centrifugal direction against the urging force of the compression coil spring 22 together with the magnetic material holder 35 by the action of the centrifugal force.

The disk 34 is fixed to the side plate 2 so that its axis matches the rotation axis L of the spool 4. The radial width of the disk 34 is preferably
As shown in FIG. 4, the distance is approximately the same as the distance over which the magnetic body 33 can slide.

As a result, the spool 4 starts to rotate, and when the rotational speed of the spool 4 is to be maximized, the centrifugal force is also maximized, and the magnetic body 33 moves on the guide rod 25 to the most centrifugal position.
Further, an eddy current proportional to the rotation speed of the spool 4 flows through the disk 34, and a large electromagnetic force acts. Therefore, the largest braking force is applied to the spool 4 when backlash is most likely to occur. Thereafter, when the rotation speed of the spool 4 decreases, the magnetic body 33 is pushed by the compression coil spring 22 due to a decrease in centrifugal force and moves on the guide rod 25 in a centrifugal direction. As a result, as the rotation of the spool 4 decreases, the braking force approaches zero.

The disk 34 may be formed so that its inner diameter is larger than the minimum rotation radius of the magnetic body 33.
In this case, since the magnetic body 33 does not face the disk 34 when the spool 4 is at a low speed, the braking force can be reduced to zero and the braking can be released.

As shown in FIGS. 6 and 7, the magnetic body 33 is provided so that the backlash prevention device can be switched to a specification as a normal magnet brake.
May be provided. That is, a slide cylinder 36 is put on the support cylinder 17 of the spool 4, and two rod-shaped restraining members 38 are provided on the slide cylinder 36, and these are interposed between the slide cylinder 36 and the leg 18 of the spool. The spring 42 is urged toward the guide rod 25. A guide rod 25 is provided on the support cylinder 17 of the spool 4.
And a bar-shaped mooring member 43 is provided so that the phase is shifted by 90 degrees. The mooring body 43 is formed integrally with the guide rod 25 on a fixed cylinder that is covered and fixed on the support cylinder 17.

When the backlash prevention device is switched to a normal magnet brake specification, the slide cylinder 36 is pushed back toward the leg 18 against the urging force of the spring 42 in the state shown in FIGS. The body 38 is separated from the mooring body 43, and is rotated by 90 degrees around the support cylinder 17 of the spool 4 as shown in FIGS. 6 and 7, and the magnetic body holder 35 is lifted by the restraining body 38 to the outermost position of the guide rod 25. Fix it. As a result, the magnetic body 33 is positioned and held at a predetermined distance from the rotation axis L of the spool 4, and faces the fixed position of the disk 34.
, A braking force proportional to the rotation speed of the spool 4 is applied.

Further, the backlash prevention device has a braking force adjusting means for adjusting the magnitude of the braking force on the spool 4.

As shown in FIG. 1, the braking force adjusting means is provided between the disk 34 and the side plate 2, and adjusts the position of the disk 34 in the direction in which the rotation axis L of the spool 4 extends. 4 is adapted to adjust the magnitude of the braking force applied thereto, and has an adjusting operation member 37 provided on the side plate 2.

The adjusting operation member 37 is a dial-shaped knob, and is rotatably held on the side plate 2. A small gear 39 is fixed to the tip of the shaft of the adjusting operation member 37. A disk holder 40 holding a disk 34 is mounted on the boss 28a of the frame member 28 fixed in the side plate 2 so as to be slidable in parallel to the rotation axis L of the spool 4. A large gear 41 meshing with the gear 39 is formed. Thus, when the adjusting operation member 37 is rotated, the disk holder 40 rotates around the boss 28a together with the disk 34.

An engagement protrusion 47 is provided radially on the outer periphery of the disk 34, and a cam surface 48 cooperating with the engagement protrusion 47 is provided on the frame member 28 in the side plate 2. The disk 34 is held by the disk holder 40, and the disk holder 40 is constantly urged toward the frame member 28 by the compression coil spring 49 mounted on the boss 28a of the frame member 28, so that the engaging projection 47 is It is elastically pressed against the surface 48. The cam surface 48 is provided corresponding to each engagement projection 47, and each cam surface 48 is provided on the rim portion 28 of the frame member 28.
b extends along an arc centered on the axis of the boss 28a.

Thus, when the adjusting operation member 37 is rotated, the cam surface 48 and the engaging projection 47 rotate relatively, and the position of the disk 34 is adjusted in the direction along the rotation axis L of the spool 4. By adjusting the distance between the disk 34 and the magnetic body 33, the magnitude of the braking force applied to the spool 4 is adjusted.

The cam surface 48 and the engaging projection 47 can be exchanged between the frame member 28 and the disk 34. Further, it is also possible to provide a cam surface 48 and an engagement projection 47 on the surface of the disk 34 facing the adjusting operation member 37.

The both bearing reels are also provided with a mechanical brake device as a means for applying a braking force to the spool 4. As shown in FIG. 1, the mechanical brake device presses the pinion shaft 8 against a shaft piece 20 integral with the spool 4 to apply a braking force to the spool 4. The pinion shaft 8 is slidable on an extension of the rotation axis L of the spool 4, and the pressing force on the shaft piece 20 is adjusted by operating the adjustment knob 52 arranged on the side plate 3. The pinion shaft 8 penetrates the side plate 3 to the outside, and the penetrated portion is surrounded by a boss 3a on the side plate 3, and a cap nut-shaped adjustment knob 52 is screwed to the boss 3a. A brake piece 53 is inserted between the pinion shaft 8 and the shaft end. The braking force applied to the spool 4 can be adjusted by turning the adjustment knob 52 in either direction to increase or decrease the force pressing the pinion shaft 8 in the axial direction via the brake piece 53.

Next, the operation of the double bearing reel will be described.

When the finger is released from the clutch lever 16 as shown in FIG. 1, the clutch is in the ON state in which the engaging concave and convex portions 13 are engaged with each other. , And transmitted to the spool 4 via the engaging concave and convex portions 13 and the like. As a result, the spool 4 winds the fishing line around it while rotating.

When the clutch lever 16 is pushed down with a finger to disengage the engaging concave and convex portion 13, the spool 4 becomes free and rotates in a direction in which the fishing line is paid out by the weight of the device during the throwing operation. In that case, the adjusting operation member 37 is operated according to the fishing situation, the distance between the disk 34 and the magnetic body 33 is adjusted, and the magnitude of the braking force to be applied to the spool 4 is adjusted. Spool 4 by throwing or releasing fishing line
Is rotated freely, the magnetic body 33 slides in the centrifugal direction on the guide rod 25 from the position shown in FIGS. 2 and 3 to the position shown in FIGS. When the spool 4 of FIGS. 4 and 5 reaches the highest speed, the electromagnetic force applied to the disk 34 becomes maximum, and as a result, a large braking force is applied to the spool 4 and backlash is prevented. Then, spool 4
As the number of rotations decreases, the magnetic body 33 is pushed by the compression coil spring 22 and moves in a centrifugal direction on the guide rod 25, so that the braking force approaches zero. For this reason, no more braking force is applied to the spool 4 than necessary, and the fishing line is smoothly fed from the spool 4 and the flight distance of the fishing line is extended.

Embodiment 2 This backlash prevention device for a double bearing reel is provided with magnetic material positioning means as shown in FIGS.

As shown in FIGS. 8 and 9, a slide cylinder 36 is put on the support cylinder 17 of the spool 4, and an adjusting cam 44 is provided around the slide cylinder 36 in correspondence with each magnetic body 33. I have. The magnetic material holder 35 is pressed against the adjustment cam 44 by the urging force of the compression coil spring 22. When the slide cylinder 36 is rotated around the support cylinder 17 of the spool 4, the magnetic body 33 moves up and down along the guide rod 25, whereby the lower limit position of the magnetic body 33 is at a desired distance from the rotation axis L of the spool 4. Is set to

The flange 3 at the base end of the guide rod 25
A row of small holes 45 is formed in the circumferential direction of 6a, and a projection 46 that fits into one of the small holes 45 is provided at a position of the slide cylinder 36 facing the flange portion 36a. . The slide cylinder 36 is the support cylinder 1 of the spool 4
When the projection 46 is fitted into the small hole 45 when the lower limit position of the magnetic body 33 is selected by turning around the 7, the lower limit position of the magnetic body 33 is fixed.

As described above, since the lower limit position of the magnetic body 33 can be set at a desired position, the braking force at the time of low-speed rotation of the spool 4 can be adjusted to a desired level. .

Third Embodiment As shown in FIG. 10, the disk 34 in the backlash prevention device for a double bearing reel is gradually thicker in the radial direction as it goes away from the rotation axis L of the spool 4. Therefore, as the rotation speed of the spool 4 increases and the magnetic body 33 moves on the guide rod 25 in the centrifugal direction, the eddy current generated in the disk 34 increases, and the braking force applied to the spool 4 increases.

Embodiment 4 As shown in FIG. 11, the disk 34 in the backlash prevention device of this double bearing reel is formed in a conical shape, and gradually becomes farther from the rotation axis L of the spool 4 in the centrifugal direction. It is arranged so as to approach the guide rod 25. Therefore, as the rotation speed of the spool 4 increases and the magnetic body 33 moves on the guide rod 25 in the centrifugal direction, the eddy current generated in the disk 34 increases, and the braking force applied to the spool 4 increases.

Fifth Embodiment As shown in FIG. 12, the disk 34 in the backlash prevention device of the double bearing reel is formed in a disk shape, and the guide rod 25 is moved from the rotation axis L of the spool 4 in the centrifugal direction. Are inclined so as to gradually approach the magnetic body 33 as they go away. Therefore, as the rotation speed of the spool 4 increases and the magnetic body 33 moves on the guide rod 25 in the centrifugal direction, the eddy current generated in the disk 34 increases, and the braking force applied to the spool 4 increases.

Embodiment 6 As shown in FIG. 13, the disk 34 in the anti-backlash device of this double-bearing reel is formed in a conical shape and gradually becomes farther from the rotation axis L of the spool 4 in the centrifugal direction. It is arranged so as to be separated from the guide bar 25. Therefore, the eddy current generated in the disk 34 increases as the rotation speed of the spool 4 increases and the magnetic body 33 moves on the guide rod 25 in the centrifugal direction, but the rate of increase is low. Accordingly, it is possible to prevent the braking force to be applied to the spool 4 for preventing backlash from becoming excessive.

Embodiment 7 As shown in FIGS. 14 and 15, the magnetic material holder 3 in the backlash prevention device for this double bearing reel is used.
5 is a pin 50 extending parallel to the rotation axis L of the spool 4.
And is supported on the support cylinder 17 of the spool 4 via the.
The magnetic material holder has a 35-lever shape. A stopper 35a and a magnetic material 33 are attached to one end with the pin 50 as a center, and a spring 51 is attached to the other end. The spring 51 is interposed between the magnetic material holder 35 and the support tube 17 of the spool 4 to urge the magnetic material holder 35 in one direction around the pin 50. The stopper 35a of the magnetic material holder 35 Stand still with abutment on top. In this stationary state, the magnetic body 33 faces the inner peripheral side on the front of the disk 34.

The free rotation of the spool 4 causes the magnetic material holder 35 to rotate around the pin 50 in FIG. 15 in the direction of the arrow due to the action of the centrifugal force, and the magnetic material 33 moves from the inner circumference to the outer circumference on the front of the disk 34. Move to the side. Therefore, as the rotation speed of the spool 4 increases, the eddy current generated in the disk 34 increases, and the braking force applied to the spool 4 increases.

Eighth Embodiment As shown in FIG. 16, the disk 34 in the backlash prevention device for a double bearing reel is formed in a conical shape, and is arranged such that the inner conical surface is on the spool 4 side. I have.

The magnetic material holder 35 is provided with the spool 4
Is supported on the support cylinder 17 of the spool 4 via a pin 50 extending parallel to a line perpendicular to the rotation axis L of the spool 4. The magnetic material holder 35 has a lever shape. The magnetic material 33 is attached to one end with the pin 50 as the center, and the spring 51 is attached to the other end. The spring 51 is interposed between the magnetic material holder 35 and the support cylinder 17 of the spool 4 to urge the magnetic material holder 35 in one direction around the pin 50, and the magnetic material 33 on the magnetic material holder 35 Opposes the inner peripheral side on the conical surface of.

When the spool 4 rotates freely, the magnetic material holder 35 rotates around the pin 50 in FIG. 16 in the direction of the arrow by the action of centrifugal force, and the magnetic material 33 moves on the conical surface of the disk 34 from the inner peripheral side to the outer peripheral side. Move as if glancing to the side. Therefore, as the rotation speed of the spool 4 increases, the eddy current generated in the disk 34 increases, and the braking force applied to the spool 4 increases.

Ninth Embodiment As shown in FIG. 17, in the compression coil spring 22 on the guide rod 25 in the backlash prevention device for a double bearing reel, the winding pitch of the coil changes in the middle, Has a spring constant of Therefore, the smaller spring constant acts on the spool 4 in the low speed region, and the larger spring constant acts on the spool 4 in the high speed region, so that the degree of the braking force can be adjusted.

The spring constant can also be changed by changing the diameter of the wire, the winding diameter of the coil, and the like.

Embodiment 10 As shown in FIG. 18, the backlash preventing device of this double bearing reel is provided with elastic force adjusting means for adjusting the elastic force of the compression coil spring 22 which is urging means. . This elastic force adjusting means is, specifically, an adjusting screw 2 as a nut screwed into the male screw 25b at the tip of the guide rod 25.
3 When the adjusting screw 23 advances and retreats on the guide rod 25, the elastic force of the compression coil spring 22 increases and decreases, and the amount of movement of the magnetic body 33 with respect to the centrifugal force also changes. For example, when the adjusting screw 23 is operated so that the compression coil spring 22 extends, the magnetic body 33 moves to the maximum diameter earlier, so that a braking force is applied to the spool 4 at a relatively low rotation speed, but the compression coil spring 22 is adjusted to contract. When the screw 23 is operated, the movement of the magnetic body 33 to the maximum diameter is delayed, so that the braking force acts on the spool 4 at a relatively high rotation speed. Further, by screwing the adjusting screw 23 forward and backward, the magnetic body 33 is moved.
Can be restricted. The guide rod 25 may be formed of a round rod other than a square rod, but in this case, a square shaft portion is formed so that the magnetic material holder 35 does not rotate around the rod.

[0058]

According to the present invention, the magnetic material is moved in the centrifugal direction by the centrifugal force associated with the rotation of the spool against the elastic force of the urging means acting in the centrifugal direction about the rotation axis of the spool. The disk is mounted on one end of the spool so that it can be moved to the side, and the disk is attached to the side plate so as to face the magnetic body. And backlash can be more accurately prevented.

[Brief description of the drawings]

FIG. 1 is a horizontal sectional view of a double bearing reel provided with a backlash prevention device according to Embodiment 1 of the present invention.

FIG. 2 is an enlarged sectional view of the backlash prevention device when the spool is stopped.

FIG. 3 is a front view of a main part in FIG. 2;

FIG. 4 is an enlarged sectional view of the backlash prevention device when the spool rotates at a high speed.

FIG. 5 is a front view of a main part in FIG. 4;

FIG. 6 is an enlarged sectional view of the backlash prevention device in a state where the magnetic body is fixed.

FIG. 7 is a front view of a main part in FIG. 6;

FIG. 8 is an enlarged sectional view of a backlash prevention device according to Embodiment 2 of the present invention.

FIG. 9 is a front view of a main part in FIG. 8;

FIG. 10 is an enlarged sectional view of a backlash prevention device according to Embodiment 3 of the present invention.

FIG. 11 is an enlarged sectional view of a backlash prevention device according to Embodiment 4 of the present invention.

FIG. 12 is an enlarged sectional view of a backlash prevention device according to Embodiment 5 of the present invention.

FIG. 13 is an enlarged sectional view of a backlash prevention device according to Embodiment 6 of the present invention.

FIG. 14 is an enlarged sectional view of a backlash prevention device according to Embodiment 7 of the present invention.

FIG. 15 is a front view of a main part in FIG. 14;

FIG. 16 is an enlarged sectional view of a backlash prevention device according to Embodiment 8 of the present invention.

FIG. 17 is an enlarged sectional view of a backlash prevention device according to Embodiment 9 of the present invention.

FIG. 18 is an enlarged sectional view of a backlash prevention device according to Embodiment 10 of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Reel body 2, 3 ... Side plate 4 ... Spool 22 ... Compression coil spring 23 ... Adjustment screw 33 ... Magnetic body 34 ... Disk 38 ... Restrictor 44 ... Adjustment cam L ... Spool rotation axis

Claims (5)

[Claims] 1. A disk made of a conductive material and at least one magnetic body are brought close to one end of a spool rotatably supported between side plates of a reel body and the side plate supporting one end of the spool. In the backlash prevention device of the two bearing reels arranged facing each other,
The magnetic member is provided at one end of the spool so as to be movable in a centrifugal direction by a centrifugal force caused by rotation of the spool against an elastic force of a biasing means acting in a centrifugal direction about a rotation axis of the spool. A backlash prevention device for a double bearing reel, wherein the disk is mounted on the side plate so as to face the body. 2. A backlash preventing device for a double bearing reel according to claim 1, further comprising positioning means for positioning and holding said magnetic material at a predetermined distance from the rotation axis of said spool. 3. The backlash prevention device for a double bearing reel according to claim 1, further comprising a position adjusting means for setting the magnetic body at a desired distance from the rotation axis of the spool. 4. A backlash preventing device for a double bearing reel according to claim 1, further comprising an elastic force adjusting means for adjusting an elastic force of said urging means. 5. The disk according to claim 1, wherein a position of said disk can be adjusted in a direction of a rotation axis of a spool by braking force adjusting means provided between said disk and said side plate.
5. The backlash prevention device for a double bearing reel according to claim 4.