JP2012019752A - Fishing reel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fishing reel in which the performance deterioration of the members to be sealed is prevented by reducing a leaking magnetic flux and excellent sealing effect can be maintained.SOLUTION: The real body of the fishing real has the driving section 21a with magnetism driven with the rotational operation of the handle 3, a one-way clutch 20 arranged in the driving section 21a, and the magnetic sealing mechanism 30 arranged so as to seal the one-way clutch 20. The magnetic sealing mechanism 30 has magnetic fluid 35 held by the magnetic circuit formed by the magnet 31 arranged to the driving section 21a at a predetermined interval, a pair of polar plates 32, 33 sandwiching and holding the magnet 31, and the magnets 31, 32, 33, and the driving section 21a, the distances in between the pair of polar plates 32, 33 are different in the sealing side and the opposite side thereof to the magnet 31 and has a part narrower than the distance of the sealing side in at least a part in the opposite side thereof.

Description

  The present invention relates to a fishing reel characterized by a support structure of a drive unit that is driven by a rotation operation of a handle coupled to a winding drive mechanism provided in a reel body.

  Usually, a fishing reel is configured to wind a fishing line around a spool via a power transmission mechanism by rotating a handle. The power transmission mechanism is provided with a drive shaft that is driven to rotate as the handle is rotated. Generally, the drive shaft is rotatably supported via a ball bearing (bearing) provided on the reel body. ing.

  By the way, when using a fishing reel at an actual fishing spot, there is a specific problem that seawater, sand, foreign matter, etc. are likely to adhere to the reel body, and these are internal via a gap outside the reel body. And adheres to and enters the ball bearing that supports the drive shaft. If seawater, sand, foreign matter or the like adheres to or enters the ball bearing, the ball bearing is corroded or rotational performance is deteriorated.

  As a countermeasure for such a problem, it is common practice to make the ball bearing waterproof and dustproof by bringing a seal member made of an elastic material into contact with the outer periphery of the drive shaft adjacent to the ball bearing. A problem has been pointed out that the rotational performance of the drive shaft is deteriorated due to the influence of the contact pressure of the seal member made of the above.

  Therefore, as a configuration for waterproofing and dustproofing the ball bearing without deteriorating the rotational performance of the drive shaft, for example, Patent Document 1 discloses a configuration between a magnetic holding ring constituting a magnetic circuit and a spool shaft (drive shaft). The magnetic fluid is held and sealed (magnetic seal mechanism).

JP 2003-319742 A

  However, the magnetic seal mechanism disclosed in the above-mentioned publicly known document does not take measures against leakage magnetic flux, and is actually an adjacent bearing (made of a magnetic body) (ball bearing or Magnetic flux leaks to a one-way clutch, etc., attracting magnetic parts, which may cause a decrease in rotational performance. Further, since the magnetic circuit is formed in an unnecessary portion, the magnetic force of the seal portion is relatively weakened, and the magnetic fluid may flow out or be attracted to another magnetic body. For example, if the magnetic fluid is adsorbed between the inner ring and the roller of the ball bearing, or between the outer ring and the roller of the one-way clutch, functions such as rotational performance are hindered.

  The present invention has been made paying attention to the above-described problems, and is a fishing reel provided with a magnetic seal mechanism that reduces leakage magnetic flux to prevent deterioration of bearing performance and maintains a good sealing effect. The purpose is to provide.

  In order to achieve the above-described object, a fishing reel according to the present invention is configured to allow a fishing line to be wound around a spool by a rotation operation of a handle rotatably supported on the reel body. A drive unit having magnetism driven in accordance with a rotation operation of the handle, a bearing disposed in the drive unit, and a magnetic seal mechanism disposed to seal the bearing. The magnetic seal mechanism includes a magnet disposed at a predetermined interval with respect to the drive unit, a pair of electrode plates that sandwich and hold the magnet, the magnet, the electrode plate, and the drive unit. A magnetic fluid held in a magnetic circuit to be formed, and a distance between the pair of electrode plates is different between the seal side and the opposite side with respect to the magnet, and at least one of the opposite sides is provided. At the seal It characterized by having a narrow portion than the interval.

  According to the configuration of the fishing reel described above, the distance between the pair of electrode plates that sandwich the magnet constituting the magnetic seal mechanism differs between the seal side and the opposite side with respect to the magnet, and at least the opposite side. The magnetic circuit formed by the magnet, the pair of pole plates, and the drive unit is magnetic at the portion where the gap between the pole plates is narrow. Will be guided. As a result, the magnetic flux leaking to the bearing side can be reduced, the bearing components are not attracted, and the bearing performance is prevented from deteriorating. Further, since the leakage magnetic flux is reduced, the magnetic flux in the magnetic circuit is not reduced, and the magnetic fluid can be stably held.

  In the above-described configuration, the drive unit may be a member that is driven when the handle is rotated and has magnetic properties. For example, a rotating drive shaft, a drive shaft that slides in the axial direction, a part of a member constituting the bearing, or a member that rotates integrally with the drive shaft as described above, or a member that slides integrally (such as a drive shaft or A collar or the like that is internally or externally fitted to the sliding shaft. In this case, it is sufficient that the collar or the like is made of a magnetic material, and the portion to which the collar or the like is attached may be made of a nonmagnetic material. That is, the drive unit may have a configuration in which a magnetic collar or the like is fitted to a portion made of a nonmagnetic material.

  According to the present invention, it is possible to obtain a fishing reel provided with a magnetic seal mechanism that reduces the leakage magnetic flux and prevents the bearing performance from deteriorating and maintains a good sealing effect.

It is a figure which shows 1st Embodiment (spinning reel) of the fishing reel which concerns on this invention, and the figure which showed the internal structure. The enlarged view of the magnetic seal mechanism shown in FIG. It is a figure which shows the 2nd Embodiment of this invention, and is a figure which shows the part of a magnetic-seal mechanism. It is a figure which shows the 3rd Embodiment of this invention, and is a figure which shows the part of a magnetic-seal mechanism. It is a figure which shows the 4th Embodiment of this invention, and is a figure which shows the part of a magnetic-seal mechanism. It is a figure which shows the 5th Embodiment of this invention, and is a figure which shows the part of a magnetic-seal mechanism. It is a figure which shows the 6th Embodiment of this invention, and is a figure which shows the part of a magnetic-seal mechanism.

Hereinafter, embodiments of a fishing reel according to the present invention will be described with reference to the drawings.
1 and 2 are diagrams showing a first embodiment of a fishing reel (spinning reel) according to the present invention. FIG. 1 is a diagram showing an internal configuration, and FIG. 2 is a diagram showing FIG. It is an enlarged view of a magnetic seal mechanism.

  A handle shaft 2 is rotatably supported on a reel body 1 of the spinning reel via a bearing (not shown), and a handle 3 to be wound is attached to an end of the handle shaft 2. Yes. A drive gear (drive gear) 4 is attached to the handle shaft 2 so as to be integrally rotatable. The drive gear 4 extends in a direction perpendicular to the handle shaft 2 and has bearings 5a, 5a, The tooth part 7a of the pinion gear 7 rotatably supported via 5b is meshed. A rotor 9 having a bale 9a and a fishing line guide device 9b is attached to the tip of the pinion gear 7 by screwing a rotor nut 8 so as to rotate integrally.

  The pinion gear 7 penetrates along the axial direction, and a spool shaft 11 holding a spool 10 around which a fishing line is wound is inserted into the pinion gear 7. A known oscillating mechanism 13 is connected to the base end side of the spool shaft 11, and when the handle shaft 2 is rotated by a rotating operation of the handle 3, the spool shaft 11 is driven to reciprocate along the axial direction. Is done. In this case, a bearing 14 is interposed between the spool shaft 11 and the rotor nut 8 so as to rotatably support the rotor nut 8 that fixes the rotor 9 to the pinion gear 7. Specifically, the spool shaft 11 is inserted through a collar member 15 installed at the leading edge of the pinion gear 7, and the bearing 14 is interposed between the collar member 15 and the rotor nut 8.

  Further, a one-way clutch 20 which is a member constituting the “bearing” in the present invention is disposed at an intermediate portion of the pinion gear 7, and is interposed between the pinion gear 7 and the reel main body 1. Is supported rotatably. The one-way clutch 20 constitutes a known reverse rotation prevention mechanism that prevents the handle 3 (the rotor 9) from rotating in the reverse direction in the fishing line feeding direction.

  The one-way clutch 20 includes an inner ring 21 that is non-rotatably fitted to the pinion gear 7, a retainer 22 that is disposed outside the inner ring 21, an outer ring 23 that is disposed outside the retainer 22, and an outer ring 23. And a plurality of rolling members (rollers) 25 that are held so as to be rollable by the cage 22 and are sealed by a magnetic seal mechanism 30 installed adjacent thereto.

  On the inner peripheral surface of the outer ring 23, a free rotation region that allows each rolling member 25 to freely rotate and a wedge region that prevents the rotation are formed. Each rolling member 25 is provided in the cage 22. A spring member (not shown) is biased toward the wedge region. Further, the outer ring 23 is fixed to the reel body 1 in a non-rotating manner. Specifically, a locking portion (not shown) is formed on the outer periphery of the outer ring 23 so as to project at a predetermined interval in the circumferential direction, and this locking portion is integrated with the reel body 1. The outer ring 23 is prevented from rotating with respect to the reel body and fixed by fitting into a locking groove (not shown) formed on the inner surface of the cylindrical convex portion 1a.

  In the one-way clutch 20 configured as described above, when the inner ring 21 rotates forward together with the pinion gear 7 (the rotor 9 rotates in the direction of winding the fishing line), the rolling member 25 of the cage 22 is positioned in the free rotation region of the outer ring 23, and therefore The rotational force of the inner ring 21 is not transmitted to the outer ring 23 (not blocked by the outer ring 23), and therefore the rotor 9 rotates together with the pinion gear 7 without any trouble. On the other hand, when the inner ring 21 is rotated together with the pinion gear 7 (the rotor 9 rotates in the direction of feeding the fishing line), the rolling member 25 of the retainer 22 is positioned in the wedge region of the outer ring 23, and this serves as a stopper. The rotation (reverse rotation) of the pinion gear 7 and the rotor 9 is prevented.

Next, the magnetic seal mechanism 30 disposed in the spinning reel configured as described above will be described.
The magnetic seal mechanism 30 of the present embodiment is configured to seal the above-described one-way clutch 20 or the like as a seal target member. Further, in the present embodiment, a magnetic drive unit (a drive unit provided with a magnetic seal mechanism) that is driven as the handle 3 rotates is integrated with an inner ring 21 that is a constituent member of the one-way clutch 20. It has become.

  The one-way clutch 20 is accommodated in a convex portion 1 a which is a reel body 1. The inner ring 21 of the one-way clutch 20 is made of a magnetic material and serves as a drive unit that rotates together with the pinion gear 7. In this case, the inner ring 21 of the present embodiment is formed with a cylindrical protruding portion 21a that protrudes toward the spool side from the front end surfaces of the retainer 22 and the outer ring 23, and the magnetic seal mechanism 30 is disposed in this portion. It is comprised so that it may be installed. That is, the protruding portion 21a is integrally formed on the inner ring which is a constituent member of the one-way clutch, and has a function of holding the magnetic fluid constituting the magnetic seal mechanism 30 here. Therefore, the pinion gear 7 can be made of a nonmagnetic material (for example, a copper alloy, an aluminum alloy, etc.).

The magnetic seal mechanism 30 includes a magnet 31 disposed at a predetermined interval with respect to the protruding portion (drive portion) 21a, and a pair of electrode plates (holding members) 32 and 33 that sandwich and hold the magnet 31. , A magnet 31, pole plates 32 and 33, and a magnetic fluid 35 held in a magnetic circuit formed by the protruding portion 21a. In this case, the magnet 31 and the electrode plates 32 and 33 are formed in a ring shape so as to have a predetermined gap from the outer peripheral surface of the protruding portion 21a, and between the electrode plates 32 and 33 and the protruding portion 21a. It is possible to hold the magnetic fluid 35 over the entire circumference in the gap. That is, the magnetic fluid 35 is formed by dispersing magnetic fine particles such as Fe ₃ O ₄ in a surfactant and base oil, and has a property of reacting when the magnet is brought close to the magnet. Yes. For this reason, the magnetic fluid 35 is made up of each of the pole plates 32 and 33 by a magnetic circuit formed by the ring-shaped magnet 31, the pole plates 32 and 33 holding and holding the magnet 31, and the protrusion 21 a made of a magnetic material. And the protruding portion 21a are stably held over the entire circumference to seal the one-way clutch 20.

  The pair of electrode plates 32 and 33 are spaced apart from each other by an interval L1 for sandwiching and holding the magnet 31 (this interval L1 is the thickness of the magnet 31). The seal side and the opposite side are configured differently. Specifically, the side opposite to the seal side with respect to the magnet 31 is configured so as to have a portion narrower than the distance L1 at least in part.

  In the present embodiment, the electrode plate 33 on the one-way clutch side is configured to be flush with the surface side of the one-way clutch 20 and the electrode plate 32 on the anti-one-way clutch side is The upper side of the magnet 31 is bent so as to approach the one-way clutch side (the bent portion is indicated by reference numeral 32 a), and the upper side of the bent portion 32 a is flush with the electrode plate 33. The flat part 32b which opposes is comprised. As a result, the interval L2 between the electrode plate 33 and the flat portion 32b is narrower than the interval L1 (the interval L2 is generally narrower above the bent portion 32a). Here, the upper side is specified in the direction when the drawing is viewed. Actually, the upper side is radially outward when the central axis in a state where the bearing is installed is taken into consideration.

  The electrode plate 33 is formed shorter than the electrode plate 32, and is fitted into an inner surface of a cylindrical projection 1b formed at the tip of a cylindrical projection 1a integrated with the reel body 1, and is positioned. As described above, the one-way clutch 20 is arranged so as to be in an interview. The electrode plate 32 is positioned and held by attaching a cap-shaped main body cover 1A to the cylindrical convex portion 1a in a state where the electrode plate 32 is in contact with the end face of the cylindrical protrusion 1b. In this case, the main body cover 1A is structured to be attached to the cylindrical convex portion 1a by screwing (the screwing portion is indicated by reference numeral 1d), and the outer surface of the cylindrical protrusion 1b, the electrode plate 32. In addition, an O-ring (seal member) 37 is interposed in a gap formed between the main body cover 1A and the body cover 1A for waterproofing.

  According to the configuration of the present embodiment, the magnetic seal mechanism 30 that holds the magnetic fluid 35 by the magnetic circuit described above can reliably prevent the entry of moisture, sand, foreign matter, etc. into the portion where the one-way clutch 20 is installed. It is possible to obtain a stable driving performance of the one-way clutch.

  Further, in the above-described configuration, the protrusion 21a is formed on the inner ring 21 that is a component of the one-way clutch 20, and the magnetic circuit is configured by this protrusion. Therefore, the number of parts of the magnetic seal mechanism can be reduced, and the pinion gear 7 Since it is not necessary to form a magnetic material that easily corrodes, it is not necessary to subject the pinion gear 7 to a corrosion treatment or the like, and it is possible to select an optimum material.

  In addition, since the pair of electrode plates 32 and 33 constituting the magnetic seal mechanism 30 is narrower on the opposite side of the seal side with respect to the magnet 31, magnetic induction is made in this portion. A magnetic circuit is also formed on the upper side of the magnet 31 so that leakage of magnetic flux to the outside can be effectively suppressed. For this reason, it becomes possible to hold | maintain the magnetic fluid 35 stably, and it becomes possible to acquire the stable sealing characteristic over a long term. Further, since the magnetic flux is prevented from leaking to the one-way clutch 20 side, the performance of the one-way clutch 20 including parts made of a magnetic material (particularly, the one-way clutch having a degree of freedom in the movement of the rolling member 25). ) Performance is reduced.

  Further, in the present embodiment, the magnetic seal mechanism 30 is made as compact as possible in the axial direction by configuring the pole plate 33 on the one-way clutch side so as to be in contact with the one-way clutch 25. In general, the outer ring portion of the one-way clutch is made of a magnetic material, so that magnetic force is attracted to the pole plate 33 and can be handled in the same manner as an integral part. Assembling work can be done easily.

  FIG. 3 is a view showing a second embodiment of the present invention and is a view showing a portion of a magnetic seal mechanism. In the embodiments described below, portions having the same functions as those in the above-described embodiments are denoted by the same reference numerals, and detailed descriptions thereof are omitted.

  In the present embodiment, of the pair of electrode plates 32 and 33 constituting the magnetic seal mechanism 30A, the end of the electrode plate 33 on the one-way clutch 20 side contacts the one-way clutch 20 via the washer 40. I am letting. The washer 40 can be made of a magnetic material or a non-magnetic material, and a gap L3 can be formed between the washer 40 and the one-way clutch 20 depending on the thickness thereof.

  By disposing such a washer 40, the above-described gap L3 is formed, whereby magnetic flux leakage to the one-way clutch 20 can be effectively prevented, and deterioration of the function of the one-way clutch can be further prevented. It becomes. The gap L3 (the thickness of the washer 40) may be 0.3 mm or more so that magnetic flux leakage to the one-way clutch 20 can be effectively prevented. Further, if the gap L3 becomes too large, the reel body becomes too long in the front-rear direction, so it is preferable to set it to 4.0 mm or less.

FIG. 4 is a view showing a third embodiment of the present invention, and is a view showing a portion of a magnetic seal mechanism.
In the magnetic seal mechanism 30B of this embodiment, the washer 40 is interposed between the electrode plate 33 and the one-way clutch 20 and the electrode plate 32 of the pair of electrode plates 32, 33 is disposed as in the above-described embodiment. It is configured to be flush with each other, and the intermediate portion of the electrode plate 33 is bent away from the one-way clutch 20 on the upper side of the magnet 31 so that the distance between the electrode plates 32 and 33 is reduced on the anti-seal side. (A bent region is indicated by reference numeral 33a, and a flat region in which the gap between the electrode plate 32 is narrowed is indicated by reference numeral 33b).

  As described above, in the configuration in which the washer 40 is interposed between the one-way clutch and the electrode plate 33 on the one-way clutch 20 side is bent, the same operational effects as those of the second embodiment described above can be obtained. .

FIG. 5 is a view showing a fourth embodiment of the present invention, and is a view showing a part of a magnetic seal mechanism.
In the magnetic seal mechanism 30 </ b> C of this embodiment, both the pair of electrode plates 32 and 33 are bent so as to approach each other on the upper side of the magnet 31.

  In such a configuration, the thickness of the magnet 31 can be increased, the magnetic seal can be strengthened, and the space can be saved with respect to the strength of the magnetic seal.

FIG. 6 is a view showing a fifth embodiment of the present invention, and is a view showing a part of a magnetic seal mechanism.
In the magnetic seal mechanism 30D of this embodiment, of the pair of pole plates 32, 33, the pole plate 33 on the one-way clutch side has an end portion on the opposite side to the seal side, and the one-way clutch 20, more specifically, one-way. It is brought into contact with the outer ring 23 of the clutch, and the intermediate part is bent away from the one-way clutch. That is, in the configuration shown in FIG. 3 described above, the electrode plate 33 is bent and the end thereof is brought into contact with the one-way clutch 20 without the washer 40 interposed. For this reason, in the electrode plates 32 and 33, the region where the interval is narrowed is the flat portion 32b on the upper side of the bent portion 32a of the electrode plate 32 and the flat region 33c existing below the bent portion 33a of the electrode plate 33. It becomes an area to do.

  According to such a configuration, since the washer 40 as described above is not interposed, the number of parts can be reduced and the size can be reduced, and only the region near the magnet 31 (strong magnetic flux region) is kept away from the one-way clutch 20. It is possible to effectively prevent the influence of magnetic flux leakage on the one-way clutch 20.

FIG. 7 is a view showing a sixth embodiment of the present invention, and is a view showing a portion of a magnetic seal mechanism.
In the magnetic seal mechanism 30E of this embodiment, in the configuration of the fifth embodiment, the length of the pair of electrode plates 32 and 33 in which the gap is narrowed is sufficiently ensured. That is, on the upper side of the magnet 31 of the pair of electrode plates 32 and 33, the length L4 of the portion where the interval between the electrode plates is narrow (the portion where the flat portion 32b and the flat portion 33c face each other and the interval is narrow) is In addition, the distance L5 is longer than the length L5 of the portion where the interval is wide (the length of the portion in contact with the one-way clutch 20) (L4> L5).

According to such a configuration, the part to be brought into contact with the one-way clutch 20 is made the minimum necessary for mounting, and the part where the magnetic flux leaks to the one-way clutch 20 is lengthened so that the magnetic flux is kept in the same installation space. A structure having a high effect of preventing leakage can be obtained.
The length L6 of the portion where the gap is widened by installing the magnet 31 is preferably formed longer than the above-described L4 (L6> L4). By setting in this way, the magnetic flux density of the seal portion does not decrease too much, and the balance becomes good.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to embodiment mentioned above, It is possible to implement in various deformation | transformation.

  The magnetic seal mechanism having the above-described configuration is not limited to the one-way clutch, and can be disposed adjacent to various bearing portions (ball bearings, etc.) installed in the drive portion. There is no particular limitation. In this embodiment, the spinning reel has been described as an example. However, the present invention can be applied to various fishing reels such as a double-bearing reel.

  Further, when configuring the magnetic seal mechanism, the shape of the pair of electrode plates 32 and 33 that hold the ring-shaped magnet 31, the installation mode with respect to the reel body, and the like can be modified as appropriate. For example, the above-described narrow-spaced portion may be formed at a part on the side opposite to the seal with respect to the magnet 31. That is, each of the electrode plates can be bent at any position radially outward from the portion sandwiching the magnet, thereby forming the above-mentioned narrow portion, but forming the bent portion. The position and the number thereof can be appropriately changed, and such a bent portion may be formed on any electrode plate. Furthermore, the constituent members of the magnetic seal mechanism shown in the above-described embodiments can be appropriately combined and implemented.

1 Reel body 3 Handle 10 Spool 20 One-way clutch (bearing)
30, 30A-30E Magnetic seal mechanism 31 Magnet 32, 33 Electrode plate 35 Magnetic fluid 40 Washer

Claims (6)

In a fishing reel that allows a fishing line to be wound around a spool by rotating a handle that is rotatably supported by the reel body,
The reel body includes a magnetic drive unit that is driven in accordance with a rotation operation of the handle, a bearing disposed in the drive unit, and a magnetic seal mechanism disposed to seal the bearing. With
The magnetic seal mechanism is formed by a magnet disposed at a predetermined interval with respect to the drive unit, a pair of electrode plates that sandwich and hold the magnet, the magnet, the electrode plate, and the drive unit. A magnetic fluid held in a magnetic circuit,
The distance between the pair of electrode plates is different from the magnet on the seal side and the opposite side, and at least part of the opposite side has a portion narrower than the interval on the seal side. Fishing reel.   The fishing reel according to claim 1, wherein the bearing-side electrode plate of the pair of electrode plates is configured to be flush with the bearing.   2. The electrode plate on the bearing side of the pair of electrode plates, wherein the end on the opposite side is in contact with the bearing and is bent so as to be away from the bearing at an intermediate portion. The fishing reel described in 1.   2. The fishing reel according to claim 1, wherein, of the pair of electrode plates, a bearing-side electrode plate has an end on the opposite side in contact with the bearing through a washer.   The fishing reel according to claim 3, wherein a length of a portion where the interval between the pair of electrode plates is narrow is longer than a length of a portion where the interval is wide on the opposite side.   The fishing reel according to any one of claims 1 to 5, wherein the bearing is a one-way clutch, and the drive unit is integrated with a component of the one-way clutch. .

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