JP2010178629A - Fishing reel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fishing reel which can well maintain rotation performance, even when used at a fishing spot in a severe environment of use, and in which a seal structure having good workability on production or maintenance is built. <P>SOLUTION: In the fishing reel, the reel body of the fishing reel includes a driving portion (pinion gear) 7, a bearing 6A disposed between the driving portions 7, and a magnetic seal mechanism 30 disposed to seal the bearing 6A; the magnetic seal mechanism 30 includes a magnet 31, a cylindrical magnetic member 33 fitted to the driving portion 7 and having a length for forming a magnetic circuit to the magnet, and a magnetic fluid 35 held between the magnet and the cylindrical member; and at least the magnet 31 and the cylindrical magnetic member 33 can be mounted on the driving portion 7 while holding the magnetic fluid 35. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a fishing reel characterized by a support structure of a drive shaft that is rotationally driven by a rotation operation of a handle connected 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 rotationally driven in accordance with the rotation operation of the handle. 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 against 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 degraded (decreased in free rotational performance) due to the influence of the contact pressure of the sealing member made of the above.

  Therefore, as a configuration for waterproofing and dust-proofing the ball bearing without reducing the rotational performance of the drive shaft (integrated spool or the like), for example, Patent Document 1 discloses a magnetic holding ring and a spool shaft constituting a magnetic circuit. A magnetic fluid held between and sealed with a (drive shaft) is disclosed.

JP 2003-319742 A

  In the above-described known seal structure, a pair of magnetic retaining rings sandwiching a magnet is fixed to the outside of the bearing inside the boss portion formed on the side cover attached to the side of the frame, and the spool shaft is fixed. A magnetic fluid is held in a magnetic circuit formed therebetween.

  In such a seal structure, the magnetic fluid moves in the axial direction of the spool shaft by moving the spool shaft in the axial direction with respect to the magnetic retaining ring when performing the spool attaching / detaching operation at the time of reel manufacture and maintenance. It may be removed with it. That is, since the magnetic fluid holding state is not maintained and stable, the sealing performance may be reduced, and it is structurally difficult to inject the magnetic fluid from the outside to a predetermined site after the spool is assembled. There is.

  The present invention has been made paying attention to the above-mentioned problems, and incorporates a seal structure that maintains good rotation performance even when used in fishing environments where the use environment is severe, and has good workability during manufacturing and maintenance. It aims to provide a fishing reel.

  In order to achieve the above-described object, the fishing reel according to the present invention has a configuration in which a fishing line can be wound around a spool by a rotation operation of a handle rotatably supported on the reel body. A drive unit; a bearing disposed between the drive unit; and a magnetic seal mechanism disposed to seal the bearing. The magnetic seal mechanism includes a magnet, and the drive unit. A cylindrical magnetic body that has a length that forms a magnetic circuit with the magnet, and a magnetic fluid that is held between the magnet and the cylindrical magnetic body, It is characterized in that at least the magnet and a cylindrical magnetic body can be attached to the drive unit while holding the magnetic fluid.

  According to the configuration of the fishing reel described above, the magnet and the cylindrical magnetic body constituting the magnetic seal mechanism are configured to be attachable to the drive unit while holding the magnetic fluid. During the manufacture and maintenance of the reel, when attaching and detaching the drive unit, it is possible to perform the operation while maintaining the holding state of the magnetic fluid constituting the magnetic seal mechanism. That is, since the manufacturing and maintenance can be performed without causing the magnetic fluid to flow out, the workability can be improved.

  In the above configuration, the drive unit includes a drive shaft that rotates like a spool shaft of a dual-bearing reel, a drive shaft that slides in an axial direction like a spool shaft of a spinning reel, or such a drive unit. In addition, a member (for example, a color member) that integrally rotates or slides integrally is included. The bearing may be interposed between the drive shaft and the reel body (including a support part and a holding part mounted in the reel body separately from the reel body). It may be interposed between the reel body and the cylindrical magnetic body.

  According to the present invention, it is possible to obtain a fishing reel that incorporates a sealing structure that maintains good rotational performance even when used at fishing grounds where the use environment is severe, and has good workability during manufacturing and maintenance.

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 principal part shown in FIG. The enlarged view of the magnetic-seal-mechanism part installed in a pinion gear part in the structure shown in FIG. The exploded view of the location where a magnetic seal mechanism is installed. FIG. 3 is an enlarged view of a magnetic seal mechanism portion installed on a handle shaft portion in the configuration shown in FIG. 2. FIG. 6 is an exploded view of a location where a magnetic seal mechanism is installed in the configuration shown in FIG. 5. It is a figure which shows the modification of the structure shown in FIG. 5, and is an enlarged view of a magnetic seal mechanism part. FIG. 8 is an exploded view of a location where a magnetic seal mechanism is installed in the configuration shown in FIG. 7. The enlarged view of the magnetic seal mechanism part installed in a rotor nut part in the structure shown in FIG. The figure which shows the part unitized in the structure shown in FIG. It is a figure which shows 2nd Embodiment (double bearing type reel) of the fishing reel which concerns on this invention, and the figure which showed the internal structure. In the structure shown in FIG. 11, the figure which expands and shows the magnetic seal mechanism installed in the bearing part provided in the right cover side of a handle shaft. The figure which shows the state which removed the handle | steering-wheel and the operation body in the structure shown in FIG. The exploded view of the location where a magnetic seal mechanism is installed. The figure which shows the magnetic seal mechanism installed in the bearing part installed in the right side board side of the spool axis | shaft which mounted | wore with the spool in the structure shown in FIG. The figure which shows the magnetic seal mechanism unitized with the spool axis | shaft. The enlarged view of a magnetic seal mechanism part. The figure which shows the magnetic seal mechanism installed in the bearing part installed in the left side board side of the spool axis | shaft which mounted | worn the spool in the structure shown in FIG. The figure which shows the modification of the magnetic seal mechanism shown in FIG. The figure which shows a unit structure in the structure shown in FIG. The figure which shows the modification of the unit structure shown in FIG.

Hereinafter, embodiments of a fishing reel according to the present invention will be described with reference to the drawings.
1 and 2 are views showing a first embodiment of the present invention. FIG. 1 is a view showing an internal configuration, and FIG. 2 is an enlarged view of a main part shown in FIG.

  The fishing reel according to the present embodiment is configured as a spinning reel of a rotor brake type used particularly in a dredge where seawater or the like is likely to enter.

  A handle shaft 2 is rotatably supported on the reel body 1 of the spinning reel via bearings 3A and 3B, and a handle 2A to be wound is attached to the end of the handle shaft 2. The bearings 3 </ b> A and 3 </ b> B are installed between the reel body 1 and the handle shaft 2, and support the handle shaft 2 so as to be rotatable with respect to the reel body 1.

  The drive shaft 4 is externally fitted to the handle shaft 2 of the present embodiment so that the drive gear 4 can rotate integrally. The bearings 3A and 3B are cylindrical shaft portions (drive portions) 4a formed integrally with the drive gear 4. And the reel body 1, the handle shaft 2 is rotatably supported. In this case, a magnetic seal mechanism 30A, which will be described later, is disposed adjacent to the bearings 3A and 3B on the cylindrical shaft portion 4a serving as a drive unit.

  A drive gear 4 that is externally fitted to the handle shaft 2 so as to be rotatable integrally with the handle shaft 2 extends in a direction orthogonal to the handle shaft 2 and is rotatably supported via bearings 6A and 6B. 7 tooth portions 7A mesh with each other. A rotor 9 provided with a bail 9a and a fishing line guide device 9b is attached to a tip end portion of the pinion gear 7 by screwing a rotor nut 8 so as to rotate integrally.

  In this case, a magnetic seal mechanism 30 to be described later is disposed on the pinion gear 7 serving as a drive unit adjacent to the bearing 6A. As will be described later, the bearing 6A is installed in an annular recess 1A formed in the central region on the front end side of the reel body 1, and the seal mechanism 30 is installed in this state.

  The pinion gear 7 penetrates along the axial direction, and a spool shaft (drive unit) 11 holding a spool 10 around which a fishing line is wound is inserted into the pinion gear 7. A known oscillating mechanism (not shown) is connected to the base end side of the spool shaft 11, and when the handle shaft 2 is rotated by the rotation operation of the handle 2 </ b> A, the spool shaft 11 is axially moved. It is driven back and forth along. In this case, a bearing 13 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 into a collar member (made of a non-magnetic member) 15 installed at the front end edge of the pinion gear 7, and the bearing 13 is interposed between the collar member 15 and the rotor nut 8. Intervened. The collar member 15 is formed of, for example, an aluminum alloy or a synthetic resin material (for example, POM material), and is fitted to the outer periphery of the spool shaft 11 so as to be rotatable and slidable. It is inserted with a slight press fit. The collar member 15 is provided with a magnetic seal mechanism 30 </ b> B, which will be described later, adjacent to the bearing 13.

  With the above-described configuration, when the handle 2A is rotated, the spool 10 reciprocates back and forth via the oscillating mechanism, and the rotor 9 is driven to rotate via the drive gear 4 and the pinion gear 7. The fishing line is wound evenly through the fishing line guide device 9b.

  In addition, when the rotor 9 is in the free rotation state, a fish is caught in the reel body 1 and when the rotor 9 rotates in the fishing line discharge direction (when the rotor 9 rotates reversely), a braking force is applied to the rotor 9. A known braking mechanism 20 is provided.

  The brake mechanism 20 is movable in the axial direction with respect to the brake rotor 23 that is rotatably disposed via a bearing 22 on a support member 21 that is integrally fixed to the reel body 1. In this way, the brake plate 25 is rotatively fitted so as to be integrally rotatable and biased rearward by a spring 24, and is disposed so as to sandwich the brake plate 25, and is supported by the frame of the reel body. And a brake shoe 26b slidably supported toward the pressure contact piece 26a.

  A ratchet 9c is fixed to the inner surface of the rotor 9, and a stopper 23a rotatably supported by the brake rotor 23 is supported on the ratchet 9c so as to be engageable. The pinion gear 7 is fitted with a cylindrical member 27 formed with a flange 27a, and a friction spring 28 that engages with the stopper 23a is held on the flange 27a. The friction spring 28 has a function of engaging the stopper 23a with the ratchet 9c when the rotor 9 rotates in the reverse direction.

  When the rotor 9 rotates in the reverse direction, the stopper 23a is engaged with the ratchet 9c by the friction spring 28, and the brake plate 25 rotates in reverse together with the brake rotor 23 by the frictional force generated by the urging force of the spring 24. To do.

  The brake shoe 26b is directed toward the pressure contact piece 26a by pulling an operation lever (not shown) supported so as to be rotatable with respect to a reel mounting leg (not shown) of the reel body 1. Accordingly, when the rotor 9 rotates in the reverse direction, the operation lever is pulled to hold the brake plate 25 between the pressure contact piece 26a and the brake shoe 26b so that the rotor 9 can be moved. Thus, a desired braking force can be applied.

  Next, the magnetic seal mechanism disposed in the spinning reel configured as described above will be described.

  FIG. 3 is an enlarged view of the magnetic seal mechanism 30 disposed in the pinion gear 7 serving as a drive unit in the configuration shown in FIGS. 1 and 2, and FIG. 4 is a diagram in which the magnetic seal mechanism 30 is installed. It is an exploded view of a location. In the present embodiment, the magnetic seal mechanism 30 is disposed adjacent to the bearing 6A out of the bearings 6A and 6B that support the pinion gear 7.

  The pinion gear 7 described above is made of a non-magnetic material (for example, copper alloy, aluminum alloy, etc.), and the bearing 6A that rotatably supports the pinion gear 7 with respect to the reel body 1 is sealed by a magnetic seal mechanism 30. It is in the state.

  The magnetic seal mechanism 30 is fitted into a magnet 31 disposed so as to surround the pinion gear 7 with a predetermined gap, a holding member (magnetic ring) 32 that holds the magnet 31, and a cylindrical portion 7B of the pinion gear 7. A cylindrical magnetic body 33 having at least a length facing the holding member 32 and a magnetic fluid 35 held between the magnet 31 and the cylindrical magnetic body 33 (externally fitted in the present embodiment). And is configured.

  In this case, the magnet 31 in the present embodiment is formed in a ring shape having a predetermined thickness so as to allow the pinion gear 7 to be inserted, and the holding member 32 sandwiches the magnet 31 thus formed. And is configured in a ring shape so as to be held. The holding member 32 sandwiches and holds the ring-shaped magnet 31 and is formed so that a recess 31A is formed along the circumferential direction on the inside thereof. As will be described later, the reel body 1 It is attached to a predetermined part of (supporting member 21). Further, the holding member 32 that holds and holds the ring-shaped magnet 31 is slightly smaller than the outer surface of the cylindrical magnetic body 33 when the magnetic seal mechanism 30 is installed and the bearing 6A is sealed. A gap G (about 0.1 to 0.5 mm) is formed. As will be described later, the magnet 31 and the holding member 32 can be handled in a state in which the magnetic fluid 35 is held. In this state (a state in which the magnet 31 and the holding member 32 can be attached to and detached from the reel body), Part is in contact with the outer surface of the cylindrical magnetic body by an attractive force acting between the magnet 31 and the cylindrical magnetic body 33.

  The cylindrical magnetic body 33 is formed of an iron-based material, for example, steel, SUS430, SUS440C, SUS630, and the like. Thereby, the magnet 31 holds the holding member 32 and the cylindrical member. A magnetic circuit is formed between the magnetic bodies 33. Note that the length of the cylindrical magnetic body 33 only needs to be long enough to generate the above-described magnetic circuit (a length that can stably hold the magnetic fluid). The cover member is formed to be slightly longer than the axial length of the holding member.

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 characteristic of reacting when a magnet is brought close to the magnet. Therefore, as shown in FIG. 3, the magnetic fluid 35 is contained in the recess 31 </ b> A and the gap G by a magnetic circuit including a magnet 31, a holding member 32 that holds the magnet 31, and a cylindrical magnetic body 33. The bearing 6A is sealed in a stable manner.

  The magnetic seal mechanism 30 configured as described above is configured so that at least the magnet 31 and the cylindrical magnetic body 33 can be attached to the pinion gear 7 that is a drive unit while holding the magnetic fluid 35.

  In the present embodiment, the magnet 31, the holding member 32 that holds the magnet 31, and the cylindrical magnetic body 33 are configured to be attachable to the pinion gear while holding the magnetic fluid 35. That is, the magnetic seal mechanism 30 is configured so that it can be handled integrally with a cylindrical magnetic body 33 and a holding member 32 holding the magnet 31. At this time, since the magnet 31 and the cylindrical magnetic body 33 are attracted by the magnetic force of the magnet 31, a predetermined range of the holding member 32 extends in the circumferential direction before the magnetic seal mechanism 30 is installed on the bearing 6A. Are in contact with the outer peripheral surface of the cylindrical magnetic body 33.

  In addition, as shown in FIG. 4, the magnetic fluid 35 may be filled in the recess 31A in advance in a state where a predetermined range of the holding member 32 is in contact with the outer peripheral surface of the cylindrical magnetic body 33. Alternatively, the recess 31A may be filled after the magnetic seal mechanism 30 is installed in the bearing 6A. In the configuration shown in FIG. 4, the magnetic fluid 35 is filled in advance, and this sealing mechanism 30 (one side surface 32a of the holding member 32) is placed on the exposed surface side of the bearing 6A with a nonmagnetic washer 36 interposed therebetween. I try to apply it.

  Then, the support member 21 is covered from above the magnetic seal mechanism 30 and fixed to the reel body 1 with screws 1B. On the back surface of the support member 21, a recess 21a for tightly fitting the other side surface 32b of the holding member 32 and a circumferential wall 21b for fitting the cylindrical protrusion 1C forming the annular recess 1A are formed, When the support member 21 is fixed to the reel body 1 with screws 1B, the other side surface 32b of the holding member 32 is brought into close contact with the recess 21a.

  At this time, the cylindrical magnetic body 33 protrudes from the opening 21 c of the support member 21, and the cylindrical member 27 is fitted into the pinion gear 7 from above, so that one end of the cylindrical magnetic body 33 is inserted. Is applied to the end surface of the cylindrical member 27, and the other end is applied to the bearing 6A (inner ring portion), whereby the magnetic seal mechanism 30 is positioned. When the magnetic seal mechanism 30 is positioned, the holding member 32 has a slight gap G over the entire circumference with respect to the outer peripheral surface of the cylindrical magnetic body 33. The magnetic fluid 35 is filled over the entire circumference and seals the bearing 6A.

  The cylindrical magnetic body 33 is preferably non-rotatably fitted to the nonmagnetic pinion gear 7 so that the sealing performance with respect to the bearing 6A is enhanced. That is, since the cylindrical magnetic body 33 is fitted to the pinion gear 7 so as to rotate together with the pinion gear 7, moisture or the like is transmitted between the inner periphery of the cylindrical magnetic body 33 and the outer periphery of the pinion gear 7. Can be effectively suppressed.

  In such a configuration, a circumferential groove 7 a is further formed on the outer periphery of the pinion gear 7, and a sealing member 37 made of an elastic material is formed between the circumferential groove 7 a and the cylindrical magnetic body 33. Is preferably disposed. In the present embodiment, the seal member 37 is configured as an O-ring made of a rubber material. By providing such a seal member 37, a more reliable seal structure can be obtained. In addition, since the above-mentioned magnetic circuit is comprised about the sealing member 37 besides an O-ring, it can also be comprised with a magnetic fluid.

  By providing the magnetic seal mechanism 30 configured as described above, the following operations and effects can be obtained.

  The magnetic seal mechanism 30 is configured to hold the magnetic fluid 35 by a magnetic circuit and seal the bearing 6A. The magnetic seal mechanism 30 is not configured to seal a seal member made of a conventional elastic material in contact with a drive unit, so that contact pressure is reduced. Thus, the rotational performance of the pinion gear 7 is not deteriorated.

  Further, as described above, by arranging the cylindrical magnetic body 33, it is not necessary to form the pinion gear 7 with a magnetic body such as an iron-based material, and a material that does not corrode (for example, a copper alloy), Alternatively, a material that can be reduced in weight (for example, an aluminum alloy) can be used. For this reason, the room for material selection is widened, and a reliable sealing effect is obtained by the magnetic fluid 35 described above. Therefore, it is not necessary to subject the bearing 6A and the pinion gear 7 to a surface treatment for preventing corrosion, thereby reducing costs. It becomes possible to do.

  In addition, since it is not necessary to perform such a surface treatment or the like, the accuracy is not lowered, and it is possible to prevent the generation of noise or the like during casting or winding of a fishing line.

  In the magnetic seal mechanism 30 described above, the magnet 31 and the cylindrical magnetic body 33 held by the holding member 32 can be attached to the pinion gear 7 while holding the magnetic fluid 35. During the manufacture and maintenance of the reel, when the pinion gear 7 is attached / detached, the holding state of the magnetic fluid 35 constituting the magnetic seal mechanism is maintained (the magnetic fluid does not flow out), and the workability is improved. Can be achieved. In addition, since the cylindrical magnetic body 33, the holding member 32 holding the magnet 31, and the magnetic fluid 35 are in an integrated state, handling can be improved and the magnetic seal mechanism 30 portion is integrated. As a result, it is possible to easily perform replacement work or the like.

  In the above-described embodiment, the structure of the magnetic seal mechanism can be modified as appropriate.

  For example, the holding member 32 is configured to sandwich and hold a ring-shaped magnet, but the structure of the holding member can be appropriately modified. For example, the holding member may be configured in a ring shape, a circumferential concave groove may be formed on the inner peripheral surface thereof, and a plurality of magnets may be fixed to the inside at predetermined intervals along the circumferential direction. . In other words, a plurality of magnets may be inserted into the recessed groove and fixed to the holding member from the central region outward in the radial direction. With this configuration, it is possible to simplify the magnets constituting the magnetic circuit and to improve the mountability with respect to the arrangement of the magnets. In such a configuration, if the magnetic circuit capable of holding the magnetic fluid 35 can be formed between the cylindrical magnetic body 33, the size, shape, number of magnets, and the like can be appropriately modified. It is.

  Alternatively, the above-described cylindrical magnetic body may be configured as follows. For example, a non-magnetic collar member is fixed to the non-magnetic pinion gear 7 in a non-rotating manner, and a cylindrical magnetic body previously formed of a magnetic material on the outer peripheral surface of the non-magnetic collar member. (Magnetic color) may be externally fitted. That is, the non-magnetic collar member and the cylindrical magnetic body (magnetic collar) may be externally fitted to the pinion gear 7.

  According to such a configuration, since the magnetic circuit can be formed while reducing the weight of the cylindrical magnetic body 33, it is possible to effectively reduce the weight of the drive unit while maintaining the sealing performance.

  Moreover, in such a structure, the structure which adhered the cylindrical magnetic body to the nonmagnetic color member previously may be sufficient. Specifically, a non-magnetic color member may be formed and, for example, a magnetic material may be deposited on the outer peripheral surface by plating or vapor deposition (physical vapor deposition, chemical vapor deposition, or the like). .

  Alternatively, an integrated structure of the magnetic seal mechanism can be constructed with a magnet and a cylindrical magnetic body without providing the holding member 32 described above. For example, the magnet constituting the magnetic circuit described above may not be held by the holding member, but may be directly attached to the reel body or the support member. For example, the magnet is formed in a ring shape in advance, and a concave groove along the circumferential direction is formed on the inner circumferential surface thereof so as to hold the magnetic fluid 35 so as to face the outer circumferential surface of the cylindrical magnetic body 33. By doing so, it is possible to hold the magnetic fluid 35 in the concave groove.

  Thus, in integrating the components of the magnetic seal mechanism, the holding member can be omitted, and the configuration can be simplified and the number of parts can be reduced.

  The magnetic seal mechanism as described above is not limited to the bearing portion of the pinion gear 7, and can be installed in various portions. In the spinning reel according to the present embodiment, the bearings 3A and 3B installed between the cylindrical shaft portion (drive portion) 4a of the drive gear 4 that is externally fitted to the handle shaft 2 and rotates integrally with the reel body 1 are further provided. The magnetic seal mechanism 30A having the same configuration (a magnetic seal mechanism in which at least a cylindrical magnetic body and a magnet are integrated) 30A is sealed.

  Hereinafter, an embodiment of a magnetic seal mechanism installed in a part different from the above-described piniongi will be described. Note that components having the same functions as those of the magnetic seal mechanism 30 described above are given the same reference numerals, and detailed descriptions thereof are omitted.

  5 and 6 show the magnetic seal mechanism portion installed on the handle shaft portion in the configuration shown in FIG. 2, FIG. 5 is an enlarged view thereof, and FIG. 6 shows the magnetic seal mechanism portion in the configuration shown in FIG. It is an exploded view of the location where a seal mechanism is installed.

  The above-described spinning reel handle shaft 2 can be changed to the left and right with respect to the reel body 1. A screw for preventing the handle shaft 2 from coming off from the other side of the reel body is provided at the front end side of the handle shaft 2. An internal thread portion 2e is formed so that 2a is screwed in via a spacer 2b. A cover member 2c is screwed to the reel body on the side opposite to the handle of the reel body 1 to close the screw 2a.

  Therefore, when the handle is replaced in the configuration of FIG. 2, the handle shaft 2 is removed by removing the cover member 2c from the reel body 1 and loosening the screw 2a. Then, the removed handle shaft 2 may be fitted to the cylindrical shaft portion 4a from the opposite side, and the screw 2a may be screwed in via the spacer 2b from the opposite side, and finally the cover member 2c may be attached.

  Similar to the above-described embodiment, the magnetic seal mechanism 30A is configured such that the ring-shaped magnet 31, the holding member 32 holding the magnet 31 and the cylindrical magnetic body 33 hold the magnetic fluid 35, and the cylindrical shaft portion 4a. It is comprised so that attachment is possible. That is, the magnetic seal mechanism 30 </ b> A is integrated with a cylindrical magnetic body 33 and a holding member 32 that holds the magnet 31. At this time, since the magnet 31 and the cylindrical magnetic body 33 are attracted by the magnetic force of the magnet 31, before the magnetic seal mechanism 30 is installed with respect to the bearing 3B, the holding member 32 is predetermined in the circumferential direction. Is in a state of being in contact with the outer peripheral surface of the cylindrical magnetic body 33.

  As shown in FIG. 6, the magnetic fluid 35 may be filled in a predetermined gap in a state where a predetermined range of the holding member 32 is in contact with the outer peripheral surface of the cylindrical magnetic body 33, or a magnetic seal. A predetermined gap may be filled after the mechanism 30A is installed in the bearing 3B.

  The magnetic seal mechanism 30A integrated in this way is formed between the reel body 1 (the cover support member 1d that is attached to and integrated with the reel body 1) and the cylindrical shaft portion (drive portion) 4a of the drive gear 4. It is installed so that the bearing 3B arrange | positioned on the cylinder shaft part 4a may be sealed.

  The cylindrical shaft portion 4a of the drive gear 4 is formed of a nonmagnetic material integrally with the drive gear 4, and the cylindrical shape constituting the magnetic seal mechanism 30A with respect to the nonmagnetic cylindrical shaft portion 4a. The magnetic body 33 is fitted (externally fitted) so as to be integrally rotatable with the drive gear. In this case, the cylindrical magnetic body 33 is positioned and held so that it cannot move in the axial direction between the bearing 3 </ b> B and the stepped portion 2 h formed on the handle shaft 2.

  Further, when the magnetic seal mechanism 30A is installed, a non-magnetic washer may be installed so as to improve the sealing performance with the reel body 1 (the cover support member 1d integrated with the reel body 1). good. In the configuration shown in the figure, a plurality of non-magnetic washers 36a and 36b are interposed between one of the holding members 32 for holding and holding the magnet 31 and the cover support member 1d integrated with the reel body 1. On the other hand, a non-magnetic washer 36 is interposed and applied to the bearing 3B.

  Also in the magnetic seal mechanism 30A as described above, it is not necessary to form the drive gear 4 with a magnetic material as in the above-described embodiment, and the bearing 3B can be reliably sealed. Further, in the magnetic seal mechanism 30A described above, the magnet 31 held by the holding member 32 and the cylindrical magnetic body 33 can be attached to the cylindrical shaft portion 4a while holding the magnetic fluid 35. For example, when the cylindrical shaft portion 4a is attached and detached during the manufacture or maintenance of the reel, the holding state of the magnetic fluid 35 constituting the magnetic seal mechanism is maintained (the magnetic fluid does not flow out), It becomes possible to improve workability. Moreover, since the cylindrical magnetic body 33, the holding member 32 holding the magnet 31, and the magnetic fluid 35 are in an integrated state, the handling property can be improved and the magnetic seal mechanism portion is integrated. Therefore, it is possible to easily perform replacement work and the like.

  7 and 8 are diagrams showing a modification of the above-described embodiment. FIG. 7 is an enlarged view of a magnetic seal mechanism portion, and FIG. 8 is a configuration shown in FIG. It is an exploded view of a location.

  In this modification, the magnetic seal mechanism 30A is incorporated in advance with respect to a cover support member 1d ′ fixed to the reel body 1 by screws 1h, and is integrally united with the cover support member. .

  According to such a configuration, since the magnetic seal mechanism is unitized in advance with respect to the member (support member) that is attached to and detached from the reel body 1, the handleability of the magnetic seal mechanism can be further improved. Maintenance work can be performed more easily.

  Note that the “support member” refers to various types of units integrated with a magnetic seal mechanism, such as a member integrated with a basic reel body, a member to be attached and detached, and a component incorporated into the reel body. A member is included. Also in such a configuration, the structure of the magnetic seal mechanism can be modified as appropriate as in the above-described embodiment.

  9 and 10 show a magnetic seal mechanism portion installed in the rotor nut portion in the configuration shown in FIG. 2, FIG. 9 is an enlarged view thereof, and FIG. 10 is a unitized configuration in the configuration shown in FIG. It is a figure which shows the part performed.

  As described above, the spool shaft 11 includes the collar member 15 formed of a nonmagnetic member (synthetic resin or the like) between the rotor nut 8 and the rotor nut 8 so as to rotatably support the rotor nut 8 that fixes the rotor 9. The collar 13 is provided with a magnetic seal mechanism 30 </ b> B adjacent to the bearing 13. In this case, the collar member 15 is fitted into the inner ring of the bearing 13 with a slight press fit.

  The magnetic seal mechanism 30 </ b> B is fitted to the holding member 32 that holds (clamps) the ring-shaped magnet 31 and the tip portion of the nonmagnetic collar member 15, and a magnetic circuit is formed at least between the holding member 32. A cylindrical magnetic body 33 having a length and a magnetic fluid (not shown) held between the ring-shaped magnet 31 and the cylindrical magnetic body 33 are provided on the rotor nut 8. It arrange | positions in the recessed part 8a formed, and is unitized with the rotor nut (support member).

  In the present embodiment, the cylindrical magnetic body 33 is externally fitted to the tip of the collar member 15, and the bearing 13 is arranged on the outer peripheral side of the portion where the cylindrical magnetic body 33 is not externally fitted. Has been established. The base end side of the collar member 15 is bent outward in the radial direction, and the inner ring of the bearing 13 is held against this portion. The rotor nut 8 is formed with a recess 8b in which the bearing 13 is installed continuously with the recess 8a, and the outer ring of the bearing 13 is applied to and held by the step portion of the recess 8b.

  The bearing 13 described above is installed in the recess 8b of the rotor nut 8, and the ring-shaped magnet 31 and the holding member 32 sandwiching the magnet 31 are installed in the recess 8a of the rotor nut 8. A bending member 39 made of material is attached. The bending member 39 is elastically locked to the flange 8 c of the rotor nut 8, whereby the bearing 13, the ring-shaped magnet 31, the holding member 32 sandwiching this, and the non-magnetic The washers 36, 36 a are retained against the rotor nut 8.

  That is, a member (support member) mounted on the reel body 1 such as the rotor nut 8 also includes a bearing 13 as described above and a magnetic seal that seals the bearing 13 as shown in FIG. It is possible to integrate (unitize) the ring-shaped magnet 31 constituting the mechanism 30B, the holding member 32 that holds (holds) the magnet, and the nonmagnetic washers 36 and 36a.

  The rotor nut 8 having such a structure is configured such that the collar member 15 is fitted to the spool shaft 11 and the rotor 9 is prevented from rotating around the pinion gear 7 and then screwed into the male screw portion 7d formed at the tip of the pinion gear 7. Entered. The bearing 13 can be magnetically sealed by filling a magnetic fluid between the ring-shaped magnet 31, the holding member 32 holding the ring-shaped magnet 31, and the cylindrical magnetic body 33. Of course, the magnetic fluid may be filled in a united state with the rotor nut 8 in advance.

  In the above configuration, the rotor nut 8 is unitized by incorporating the bearing 13 and the ring-shaped magnet 31 constituting the magnetic seal mechanism, the holding member 32 sandwiching the magnet, the non-magnetic washers 36 and 36a, etc. It is possible to improve handling when the rotor is attached and detached during maintenance.

  In the above-described configuration, the collar member 15 is made of a nonmagnetic material, and a cylindrical magnetic body is externally fitted thereto. However, the collar member itself may be made of a magnetic material. Or the structure which adheres the material which has magnetism to the front-end | tip outer peripheral surface of the collar member of a nonmagnetic material may be sufficient.

  As described above, the magnetic seal mechanism as described above can be disposed in various portions in the spinning reel where the bearings are installed. For example, in addition to the above-described portion, as shown in FIG. 2, it may be installed in the portion of the bearing 22 where the braking mechanism 20 is disposed. A magnetic seal mechanism 30 </ b> C installed in this portion is fitted (internally fitted) with a cylindrical magnetic body 33 to the brake rotor 23, which is a non-magnetic drive unit, and is fixed integrally to the reel body 1. On both sides of the bearing 22 of the supporting member 21, a ring-shaped magnet 31, a holding member 32 that holds (holds) the magnet, non-magnetic washers 36 and 36 a, and the like are disposed.

  Even in such a configuration, the bearing 22 can be magnetically sealed without forming the brake rotor 23 of a magnetic material. Of course, the magnetic seal mechanism 30 </ b> C can be integrated with its constituent elements as in the above-described embodiment, or can have a unit structure together with the support member 21.

Next, a second embodiment of the fishing reel according to the present invention will be described.
In the above-described embodiment, the spinning reel is exemplified as the fishing reel, but the present invention can also be applied to a dual-bearing type reel.

  FIG. 11 is a view showing a second embodiment of the fishing reel according to the present invention and showing the internal structure.

  A reel body 51 of a fishing reel (double bearing type reel) according to the present embodiment includes left and right side plates 51A and 51B that rotatably support a spool 55 around which a fishing line is wound. The left side plate 51A includes a left frame 52a and a left cover 53a attached to cover the left frame 52a. The right side plate 51B is attached to cover the right frame 52b and the right frame 52b. And a right cover 53b to be worn.

  A handle 57 for rotationally driving the spool 55 is installed on the right side plate 51B side. The handle 57 is rotatably supported in the right side plate 51B via bearings 56A and 56B. It is attached to the end of the.

  The spool 55 is fixed to a spool shaft 55a that is rotatably supported by bearings 58A and 58B with respect to the left and right side plates 51A and 51B.

  A known power transmission mechanism 60 for transmitting the rotational driving force of the handle 57 to the spool 55 is installed in a space formed between the right frame 52b and the right cover 53b. The spool 55 is rotationally driven through the power transmission mechanism 60 by performing the removing operation.

  The magnetic seal mechanism disposed in the dual bearing reel configured as described above will be described.

  FIG. 12 is an enlarged view showing a magnetic seal mechanism installed in a bearing portion provided on the right cover side of the handle shaft serving as a drive unit in the configuration shown in FIG. 11, and FIG. 13 is a diagram showing the configuration shown in FIG. The figure which shows the state which removed the handle | steering-wheel and the operation body, and FIG. 14 are the exploded views of the location in which a magnetic seal mechanism is installed.

  The handle shaft 57a described above is formed of a non-magnetic material as in the above-described embodiment, and an operating body 71 constituting a known drag mechanism 70 is screwed to the right end portion. When the operation body 71 is rotated, the first pressing body 73 which is a collar member fitted to the handle shaft 57a so as to be integrally rotatable so as to be movable in the axial direction moves in the axial direction, and the second pressing body 75 is interposed via the disc spring 75. The pressing body 77 is pressed, the friction member 78 is pressed with a desired pressing force, and a braking force is generated between the handle shaft 57a and the drive gear 61 constituting the power transmission mechanism 60.

  The right end portion of the handle shaft 57a is rotatably supported by a bearing 56B with respect to the reel body 51 (cylindrical support portion 53c formed on the right cover 53b constituting the reel body).

  The magnetic seal mechanism 30D that seals the bearing 56B is installed on the handle side with respect to the bearing 56B, and a ring-shaped magnet 31 disposed so as to surround the handle shaft 57a, and a holder that holds (holds) the magnet. A cylindrical shape that is fitted to the member 32 and the first pressing body 73 fitted to the handle shaft 57a so as to be integrally rotatable (externally fitted in the present embodiment) and has a length facing at least the holding member 32. And a magnetic fluid (not shown) held between the ring-shaped magnet 31 and the cylindrical magnetic body 33.

  In this case, the cylindrical magnetic body 33, the magnet 31, and the holding member 32 that sandwiches and holds the magnet 31 are integrated, and further, the inner circumference of the inner ring of the bearing 56B is formed on the outer circumferential surface of the cylindrical magnetic body 33. And the bearing 56B is applied by the outer flange 33d to prevent it from coming off in the axial direction. That is, these members are integrated (unitized), and are externally fitted to the first pressing body 73 and configured to be attached to the inner peripheral portion of the cylindrical support portion 53c.

  The cylindrical magnetic body 33 has such a length that a magnetic circuit is generated between the ring-shaped magnet 31 and the holding member 32 (a length that can stably hold the magnetic fluid). good. In addition, the ring-shaped magnet 31 to be integrated and the holding member 32 for holding and holding the magnet are fitted (internally fitted) together with the bearing 56B to the inner surface of the cylindrical support portion 53c. One of the holding members 32 is retained by a nonmagnetic washer 36a that is retained by the inner surface of the cylindrical support portion 53c via a retaining ring 53d, and the other of the retaining members 32 is retained by the nonmagnetic washer 36. Is applied to the bearing 56B.

  In addition, a stepped portion 53f is formed on the inner peripheral portion of the cylindrical support portion 53c so as to abut the end surface of the bearing 56B that is unitized and inserted to restrict movement in the axial direction, together with the retaining ring 53d. The magnetic seal mechanism 30D is restricted in the axial direction so that the first pressing body 73 does not move following the axial movement.

  Even with such a magnetic seal mechanism 30D, similarly to the above-described magnetic seal mechanism, it is not necessary to form the handle shaft 57a with a magnetic material such as an iron-based material, and a material that does not corrode or can be reduced in weight. Can be used. Further, in the magnetic seal mechanism, the magnet 31, the cylindrical magnetic body 33, the holding member 32 for holding and holding the magnet 31, and the bearing 56B (the magnetic fluid 35 may be filled in advance or filled after incorporation. May be integrated in advance, so that it is possible to improve workability at the time of assembling and maintenance (during attachment / detachment).

  In the present embodiment, the first pressing body 73 may be made of a magnetic material. By comprising in this way, the said cylindrical magnetic body 33 becomes unnecessary and it becomes possible to combine the function as a press body of a drag mechanism, and the function as a cylindrical magnetic body of a magnetic seal mechanism. Or you may unitize the whole by using the 1st press body 73 as a supporting member.

  FIG. 15 is a diagram showing a magnetic seal mechanism 30E installed in a bearing 58B portion installed on the right side plate side of the spool shaft 55a on which the spool is mounted in the configuration shown in FIG. 11, and FIG. 16 is unitized together with the spool shaft. FIG. 17 is a view showing the magnetic seal mechanism 30E, and FIG. 17 is an enlarged view of the magnetic seal mechanism 30E portion.

  The right end portion of the spool shaft 55a is rotatably supported by the bearing 58B with respect to the reel body 51 (cylindrical support portion 52d formed on the right frame 52b constituting the reel body).

  The magnetic seal mechanism 30E that seals the bearing 58B is installed on the spool side with respect to the bearing 58B, and is fitted to the ring-shaped magnet 31, the holding member 32 that holds (holds) the magnet, and the spool shaft 55a. (It is externally fitted in this embodiment) and is held between the cylindrical magnetic body 33 having a length at least facing the holding member 32, and the ring-shaped magnet 31 and the cylindrical magnetic body 33. And a magnetic fluid (not shown).

  In this case, as shown in FIG. 16, the cylindrical magnetic body 33, the magnet 31, and the holding member 32 holding and holding the magnet 31 can be mounted on the spool shaft 55a while holding the magnetic fluid. . Specifically, the cylindrical magnetic body 33 is press-fitted while being prevented from rotating by engaging the inner peripheral protrusion 33a with a non-circular section 55b formed on the spool shaft 55a. 33 is fixed to the spool shaft 55a. That is, in the magnetic seal mechanism 30E, as the spool structure 100 that is attached to and detached from the reel body 1, at least a magnet 31 that forms a magnetic circuit and a cylindrical magnetic body 33 are previously united together with a spool shaft 55a that is a drive unit. It has become a state.

  Further, the bearing 58B is adjacent to the magnetic seal mechanism 30E and its inner ring is fitted to the spool shaft 55a. When the spool component 100 is removed from the reel body 1, as shown in FIG. The magnetic seal mechanism 30E and the bearing 58B can be detached from the reel body integrally with the spool.

  On the other hand, as shown in FIG. 11, the left end portion of the spool shaft 55a is opposed to the reel body 51 (cylindrical support portion 53d formed on the left cover 53a fitted into the opening 52c formed on the left frame 52a). The bearing 58A is rotatably supported. The bearing 58A is sealed by a magnetic seal mechanism 30F installed on the spool side with respect to the bearing 58A. The magnetic seal mechanism 30F holds the ring-shaped magnet 31 and the magnet 31 as shown in FIG. (Holding) holding member 32, cylindrical magnetic body 33 fitted to spool shaft 55a (externally fitted in this embodiment) and having a length facing at least holding member 32, and ring magnet And a magnetic fluid (not shown) held between the cylinder 31 and the cylindrical magnetic body 33.

  In this case, the cylindrical magnetic body 33, the magnet 31, and the holding member 32 that holds and holds the magnet 31 can be attached to the spool shaft 55a while holding the magnetic fluid. And is unitized in advance with the left cover (support member) 53a. That is, the ring-shaped magnet 31 and the holding member 32 that holds and holds the magnet 31 are fitted (internally fitted) on the inner surface of the cylindrical support portion 53d adjacent to the bearing 58A. One of the holding members 32 is retained by a nonmagnetic washer 36a that is retained on the inner surface of the cylindrical support portion 53d via a retaining ring 53f, and the other of the retaining members 32 is secured to the nonmagnetic washer 36. The bearing is applied to the bearing 58A. The bearing 58A is inserted in advance into the cylindrical support portion 53d before the magnetic seal mechanism 30F is inserted, and is unitized with the magnetic seal mechanism 30F with respect to the left cover 53a.

  The left cover 53a can be attached to and detached from the left frame 52a with the spool structure 100 mounted between the left and right frames. The left cover 53a is attached to the left frame 52a in the direction of the arrow in FIG. Is done. When the left cover 53a is attached to the left frame 52a, the cylindrical magnetic body 33 slides in the direction of the arrow together with the left cover, the tip is applied to a retaining ring 55d attached to the spool shaft 55a, and the spool shaft 55a The cylindrical magnetic body 33 is press-fitted in a non-rotating manner by engaging the inner peripheral protrusion 33a with the non-circular portion 55c formed in the cross section. At this time, the cylindrical magnetic body 33 is positioned by the other end being applied to the bearing 58A.

  By installing the magnetic seal mechanisms 30E and 30F configured as described above, it is not necessary to form the spool shaft 55a with a magnetic material such as an iron-based material, and a material that does not corrode or can be reduced in weight. The material can be used. For this reason, the room for material selection is widened, and a reliable sealing effect can be obtained by the magnetic fluid, so that the bearings 58A and 58B and the spool shaft 55a need not be subjected to a surface treatment for preventing corrosion, thereby reducing costs. It becomes possible to do.

  In addition, since it is not necessary to perform such a surface treatment or the like, the accuracy is not lowered, and it is possible to prevent the generation of noise or the like during casting or winding of a fishing line.

  The magnetic seal mechanism 30E described above is unitized in the spool shaft 55a (spool constituent body 100) that is a drive unit, and the magnetic seal mechanism 30F is unitized in the left cover 53a that is a support member. For example, when the reel part is manufactured or maintained, when the operation of incorporating or removing the spool portion is performed, the holding state of the magnetic fluid constituting the magnetic seal mechanism is maintained (the magnetic fluid may flow out). It is possible to improve workability. Moreover, since the cylindrical magnetic body 33, the holding member 32 holding the magnet 31, and the magnetic fluid 35 are in an integrated state, the handling property can be improved and the magnetic seal mechanism portion is integrated. It is also possible to easily perform replacement work.

The magnetic seal mechanism described above can be modified as appropriate, and can be configured as a unit body that can be attached to and detached from the spool shaft, for example, as follows.
FIG. 19 is a view showing a modification of the magnetic seal mechanism 30E shown in FIG. 17, and FIG. 20 is a view showing the unit structure.

  The magnetic seal mechanism 30E of this modification is formed of a nonmagnetic material, and an inner flange 40a is formed on the base end side of a cylindrical member (support member) 40 through which a spool shaft can be inserted, and a bearing 58B is formed in this portion. A ring-shaped magnet 31, a holding member 32 that holds (holds) the magnet 31, and nonmagnetic washers 36 and 36 a are fastened to the inner surface of the cylindrical portion 40, and the inner side thereof The magnetic seal mechanism is unitized by press-fitting the cylindrical magnetic body 33A. In this case, the cylindrical magnetic body 33A is provided with a step portion 33d and a retaining ring 33e, and the bearing 58B is fitted and held at a predetermined position. Further, a retaining ring 40 d is attached to the inner surface of the distal end of the cylindrical member 40 to prevent the magnetic seal mechanism from coming off from the cylindrical member 40.

  A magnetic fluid (not shown) is held between the cylindrical magnetic body 33A and the ring-shaped magnet 31 held by the holding member 32, and the state (unit structure) shown in FIG. ).

  Such a unit structure can be installed at a predetermined position by fitting the retaining plate 45 to the inner surface of the cylindrical support portion 52d from the left side of the spool shaft 55a and then screwing it with the retaining plate 45. It becomes.

  According to the magnetic seal mechanism 30E unitized in this way, it is possible to improve the handleability and to improve the assemblability.

  The unit structure described above supports the bearing 58B on the cylindrical magnetic body 33A. However, as shown in FIG. 21, the cylindrical magnetic body 33 is applied to the inner ring of the bearing 58B. May be.

  In the above-described configuration, the cylindrical magnetic body may be externally fitted to a non-magnetic collar member, or a non-magnetic collar member may be formed on the outer peripheral surface, for example, A structure in which a magnetic material is applied by plating or vapor deposition (physical vapor deposition, chemical vapor deposition, or the like) may also be used.

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

  The magnetic seal mechanism having the above-described configuration can be installed in the bearing portion of various fishing reels, and the type of the target reel and the portion where the bearing is installed are not particularly limited. Absent.

  Moreover, about the cylindrical magnetic body fitted with respect to a drive part (a color member etc. fitted to a drive part are included), it may be fitted externally or may be fitted internally. The support member and the drive unit that are unitized together with the magnetic seal mechanism may be detachable from the reel body or may be integrated in advance. Furthermore, when configuring the magnetic seal mechanism, the configuration of the magnet that holds the magnetic fluid, and the configuration of holding the magnet, the shape and the like of the holding member can be appropriately modified. Of course, a configuration in which the magnet is directly attached to the reel body without providing the holding member may be employed. Furthermore, the constituent members shown in the drawings can be combined as appropriate.

1, 51 Reel body 2A, 57 Handles 3A, 3B, 6A, 6B Bearing 4 Drive gear 4a Tube shaft portion 7 Pinion gear (drive portion)
9 Rotor 10, 55 Spool 11 Spool shaft (drive unit)
13, 22 Bearing 15 Collar member 30, 30A-30F Magnetic seal mechanism 31 Magnet 32 Holding member 33, 33A Cylindrical magnetic body 35 Magnetic fluid 56A, 56B, 58A, 58B Bearing

Claims (5)

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 drive unit, a bearing disposed between the drive unit, and a magnetic seal mechanism disposed to seal the bearing.
The magnetic seal mechanism includes a magnet, a cylindrical magnetic body that is fitted to the drive unit and has a length that forms a magnetic circuit with the magnet, and the magnet and the cylindrical magnetic body. A fishing reel comprising: a magnetic fluid held in between, wherein at least the magnet and a cylindrical magnetic body can be attached to the drive unit while holding the magnetic fluid .   The fishing reel according to claim 1, wherein at least a magnet forming the magnetic circuit and a cylindrical magnetic body are integrated as a unit with a support member and can be attached to the drive unit.   The fishing reel according to claim 2, wherein the bearing that rotatably supports the cylindrical magnetic body is unitized with the support member.   The fishing reel according to claim 1, wherein at least a magnet forming the magnetic circuit and a cylindrical magnetic body are unitized together with the drive unit.   The fishing reel according to any one of claims 1 to 4, wherein the cylindrical magnetic body is prevented from rotating with respect to a non-magnetic driving unit.

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