JP5443187B2 - Fishing reel - Google Patents

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 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 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 in fact, a bearing or a one-way clutch (made of a magnetic material) adjacent to the magnetic seal mechanism. The magnetic component is included, and hereinafter, also referred to as a member to be sealed) or the like, the magnetic component is attracted by leakage of the magnetic component, which may reduce rotational performance. In addition, since the magnetic circuit is formed in an unnecessary portion, the magnetic force of the seal portion is relatively weakened, the magnetic fluid holding force is weakened, and the sealing effect on the member to be sealed may be reduced.

  The present invention has been made by paying attention to the above-described problems, and it is a fishing that includes a magnetic seal mechanism that reduces leakage magnetic flux and prevents performance degradation of a member to be sealed, and maintains a good sealing effect. The purpose is to provide a 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 provided with a member to be sealed, and a magnetic seal mechanism disposed adjacent to seal the member to be sealed, wherein the magnetic seal mechanism is connected to the drive unit. A ring-shaped magnet disposed at a predetermined interval, a pair of holding members that sandwich and hold the ring-shaped magnet, a magnetic unit provided in the drive unit, the ring-shaped magnet, and the pair of pairs A holding member, and a magnetic fluid held in a magnetic circuit formed by the magnetic part, and of the holding member on the sealing target member side among a pair of holding members that sandwich the ring-shaped magnet Thickness T1, if the thickness of the opposite side of the holding member was T2, and T1> T2, wherein the pair of holding members, radially outward of said ring-shaped magnet, the ring spaced from the ring-shaped magnet When a gap between the ring-shaped magnet and the magnetic portion is L1, and a gap between the ring-shaped magnet and the ring-shaped magnetic body is L2, L1 <L2 is satisfied . It is characterized by that.
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. Comprises a drive unit in which a sealing target member is disposed, and a magnetic seal mechanism disposed adjacently so as to seal the sealing target member, and the magnetic seal mechanism is provided in the drive unit. A ring-shaped magnet disposed at a predetermined interval, a pair of holding members that sandwich and hold the ring-shaped magnet, a magnetic unit provided in the drive unit, the ring-shaped magnet, A pair of holding members, and a magnetic fluid held in a magnetic circuit formed by the magnetic part, and of the pair of holding members sandwiching the ring-shaped magnet, holding on the sealing target member side Element When the thickness is T1 and the thickness of the holding member on the opposite side is T2, T1> T2, and the pair of holding members are spaced apart from the ring-shaped magnet on the radially outer side of the ring-shaped magnet. The ring-shaped magnetic body is sandwiched, and the radial thickness of the ring-shaped magnetic body is equal to or greater than the thickness of the holding member on the sealing target member side of the pair of holding members. It is characterized by.

  According to the configuration of the fishing reel described above, regarding the pair of holding members constituting the magnetic seal mechanism, the thickness of the holding member on the sealing target member side is made thicker than the thickness of the holding member on the opposite side. In the magnetic circuit formed by the ring-shaped magnet, the pair of holding members, and the magnetic portion, the magnetic flux density of the holding member on the sealing target member side is reduced, thereby reducing the magnetic flux leaking to the sealing target member side. It becomes possible to make it. That is, since leakage of magnetic flux to the member to be sealed is suppressed, the component parts are not attracted, and the performance of the member to be sealed is suppressed from being lowered. 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 configuration described above, the drive unit includes a drive shaft that rotates, a drive shaft that slides in the axial direction, a member that rotates integrally with or slides along with such a drive shaft, and the like. Moreover, about the magnetic part provided in a drive part, the drive part itself may be comprised as a magnetic body, and the structure which fitted the color | collar which has magnetism to the nonmagnetic drive part may be sufficient.

Further, in order to achieve the above-mentioned object, the present invention has a configuration in which a fishing line can be wound around a spool by a rotating operation of a handle rotatably supported on the reel body. A drive unit provided with a magnetic part, and a magnetic seal mechanism arranged adjacent to seal the member to be sealed, wherein the magnetic seal mechanism is connected to the magnetic part. Formed by a ring-shaped magnet disposed at a predetermined interval, a pair of holding members that sandwich and hold the ring-shaped magnet, the ring-shaped magnet, the pair of holding members, and the magnetic portion A magnetic fluid held by a magnetic circuit, and the pair of holding members are arranged in a ring-shaped magnetic body spaced apart from the ring-shaped magnet and radially outward of the ring-shaped magnet. and There is sandwiched If the gap between the magnetic portion and the ring-shaped magnet L1, the gap between the ring-shaped magnet and the ring-shaped magnetic body was L2, characterized in that the L1 <L2.
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. Is provided with a drive unit provided with a magnetic part in which a seal target member is disposed, and a magnetic seal mechanism disposed adjacently so as to seal the seal target member, A ring-shaped magnet disposed at a predetermined interval with respect to the magnetic part; a pair of holding members that sandwich and hold the ring-shaped magnet; the ring-shaped magnet; the pair of holding members; A magnetic fluid held in a magnetic circuit formed by the magnetic part, and the pair of holding members are spaced apart from the ring-shaped magnet outwardly in the radial direction of the ring-shaped magnet. Ring-shaped magnetism There are clamped, the thickness in the radial direction of the ring-shaped magnetic body, of the pair of holding members, wherein the at least the thickness of the sealed member of the holding member.

  In this way, by holding the ring-shaped magnetic body on the outer side in the radial direction of the pair of holding members that sandwich the ring-shaped magnet, a magnetic circuit is formed on the outside of the holding member, and the outside. Leakage of magnetic flux is reduced. Thereby, it is suppressed that magnetism flows with respect to a sealing object member, and it is suppressed that the performance of a sealing object member falls.

  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 performance of the member to be sealed from being deteriorated 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 principal part of FIG. The enlarged view of the magnetic seal mechanism installed in a one-way clutch part in the structure 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. FIG. 5 is an enlarged view of the magnetic seal mechanism shown in FIG. 4. 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. FIG. 7 is an enlarged view of the magnetic seal mechanism shown in FIG. 6. 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. FIG. 9 is an enlarged view of the magnetic seal mechanism shown in FIG. 8. It is a figure which shows the 5th Embodiment of this invention, and is a figure which shows the structure which changed the arrangement | positioning aspect of the one-way clutch and installed the magnetic seal mechanism. FIG. 11 is an enlarged view of the magnetic seal mechanism shown in FIG. 10. 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. FIG. 13 is an enlarged view of the magnetic seal mechanism shown in FIG. 12. It is a figure which shows 7th Embodiment (double bearing type 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 of FIG. FIG. 16 is an enlarged view of a magnetic seal mechanism installed on the handle shaft in the configuration shown in FIG. 15.

Hereinafter, embodiments of a fishing reel according to the present invention will be described with reference to the drawings.
1 to 3 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 main diagram of FIG. FIG. 3 is an enlarged view of a magnetic seal mechanism installed in a one-way clutch portion in the configuration shown in FIG.

  A handle shaft 2 is rotatably supported via a bearing on a reel body 1 of the spinning reel, and a handle 3 that is wound up is attached to an end of the handle shaft 2. 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 orthogonal to the handle shaft 2 and has bearings 5a, A tooth portion 7a of a pinion gear (which constitutes a drive unit) 7 supported rotatably via 5b is engaged. 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.

  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 (not shown) is connected to the base end side of the spool shaft 11, and when the handle shaft 2 is rotated by a rotation operation of the handle 3, 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 through a collar member 15 installed at the tip edge of the pinion gear 7, and the bearing 13 is interposed between the collar member 15 and the rotor nut 8.

  In addition, a one-way clutch 20 is installed at an intermediate portion of the pinion gear 7, and the one-way clutch is operated by rotating a switching operation lever 28 provided outside the reel main body 1. 3 (rotor 9) constitutes a known reverse rotation prevention mechanism (stopper) for preventing reverse rotation of the fishing line feeding direction.

  In this case, the one-way clutch 20 includes an inner ring 21 that is non-rotatably fitted to the pinion gear 7, a cage 22 that is disposed outside the inner ring 21, and an outer ring 23 that is disposed outside the cage 22. A plurality of rolling members (rollers) 25 are provided inside the outer ring 23 so as to be rollable by the cage 22. 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. The spring member is biased toward the wedge region.

  The outer ring 23 is prevented from rotating relative to the reel body 1 by a detent plate 26 that is concentrically disposed on the radially outer side of the cage 22. A locking projection (not shown) protruding in the radial direction is formed in a part of the rotation stopper plate 26 in the circumferential direction, and a notch (not shown) in which the locking projection is formed in the outer ring 23. The outer ring 23 is prevented from rotating with respect to the reel main body 1 by being locked in a locking groove (not shown) formed in the reel main body 1 via a not-shown).

  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.

  Further, the operation of the reverse rotation prevention mechanism by the one-way clutch 20 can be controlled by turning a switching operation lever 28 provided outside the reel body 1. Specifically, the switching operation lever 28 has a switching cam 28 a that extends substantially parallel to the spool shaft 11 in the reel body, and the tip protrusion 28 b of the switching cam 28 a is an engagement hole of the operating arm 29. 29a is engaged. In this case, the operating arm 29 is connected to the retainer 22 through a notch formed in the outer ring 23. Therefore, in this configuration, by rotating the switching operation lever 28, the cage 22 can be rotated via the switching cam 28 a and the operating arm 29, and the rolling member 25 held by the cage 22 can be moved. A reversible position (a position where the rotor 9 can be rotated in reverse) where the outer ring 23 is forcibly held in the free rotation region of the outer ring 23 against the biasing force of the spring member, and the outer ring 23 by rotating the rolling member 25 by the biasing force of the spring member. It is possible to selectively switch between a reverse rotation prevention position (a position where the reverse rotation of the rotor 9 is prevented) to be positioned in the wedge region.

  Next, the magnetic seal mechanism disposed in the spinning reel configured as described above will be described. The magnetic seal mechanism of the present embodiment is configured to seal the above-described one-way clutch 20 or the like as a sealing target member.

  As shown in FIG. 2, the reel body 1 partially accommodates a pinion gear 7 (and / or an inner ring 21 that rotates together with the pinion gear 7) that rotates in conjunction with the operation of the handle 3. An accommodating recess 1A supported by 5a is formed in a concave shape. The accommodation recess 1A accommodates and holds the one-way clutch 20 of the above-described reverse rotation prevention mechanism in a positioned state (a reverse rotation prevention mechanism is provided in the accommodation recess 1A), and on the front side facing the spool 10 side. It has an opening 1B. The opening 1B may be partially closed by the cover member 30 and partially left by the cover member 30 because there is a possibility that moisture, foreign matter, or the like may enter the opening 1B via a route indicated by an arrow in the drawing. A magnetic seal mechanism 50 is provided in the opened portion 30a. The magnetic seal mechanism 50 forms a magnetic circuit between the opening 30a and a cylindrical magnetic body provided on the outer peripheral surface of the pinion gear 7 made of a nonmagnetic material (for example, copper alloy, aluminum alloy, etc.). By holding the magnetic fluid, the opening 30a is sealed. The cover member 30 is attached to the reel body 1 at its outer peripheral end by a set screw 32, and a seal member 33 is provided between the inner surface of the outer peripheral end of the cover member 30 and the attachment end face of the reel main body 1. It is inserted.

  The magnetic seal mechanism 50 for sealing the inside of the housing recess 1A for housing the driving elements such as the one-way clutch 20 and the pinion gear 7 includes a ring-shaped magnet 51 disposed so as to surround the pinion gear 7 with a predetermined gap. Between the pair of holding members (electrode plates made of a magnetic material) 52 a and 52 b that sandwich and hold the ring-shaped magnet 51, and the ring-shaped magnet 51 that is fitted (externally fitted) to the pinion gear 7. A cylindrical magnetic body (magnetic part) 53 forming a magnetic circuit and a magnetic fluid 55 held between the ring-shaped magnet 51 and the cylindrical magnetic body 53 are configured as one unit. . For this reason, when the cover member 30 is removed from the reel body 1, the magnetic seal mechanism 50 (ring-shaped magnet 51, holding members 52 a and 52 b, magnetic body 53, magnetic fluid 55) can be integrally removed together with the cover member 30. It becomes possible.

  The holding members 52a and 52b of the present embodiment sandwich and hold the ring-shaped magnet 51, and a gap L1 is formed between the ring-shaped magnet 51 and the magnetic body 53 along the circumferential direction. It is formed so as to occur, is flush with the ring-shaped magnet 51 on the base end side, and is abutted against and supported by the inner peripheral contact surface of the cover member 30. The holding members 52a and 52b are in contact with each other on the holding member 52a side (sealing target member side) and attached to the inner surface of the cover member 30, and the holding member 52b side (opposite side to the sealing target member). ) Is held between the cover member 30 and the cover member 30 that are in contact with each other, and a seal member 36 is interposed between the cover member 30 and the holding member 52b. Further, the holding members 52 a and 52 b are configured so that a slight gap G is generated between the holding members 52 a and 52 b and the outer surface of the cylindrical magnetic body 53.

  The cylindrical magnetic body 53 is formed of an iron-based material, for example, steel, SUS430, SUS440C, SUS630, and the like, and thereby, holding members 52a and 52b that hold the ring-shaped magnet 51, and A magnetic circuit is formed between the cylindrical magnetic body 53. The length of the cylindrical magnetic body 53 is long enough to generate the magnetic circuit (long enough to stably hold the magnetic fluid 55; therefore, it faces at least the pair of holding members 52a and 52b. The magnetic body 53 of this embodiment has one end applied to the end surface of the inner ring 21 of the one-way clutch 20 and the other end applied to the end surface of the rotor 9. Is positioned by.

  Moreover, it is preferable that the magnetic body 53 is non-rotatably fitted to the nonmagnetic pinion gear 7. In other words, when the cylindrical magnetic body 53 is non-rotatably fitted (circular fitting support) so as to rotate integrally with the pinion gear 7, moisture or the like is generated between the inner periphery of the magnetic body 53 and the outer periphery of the pinion gear 7. Invasion can be effectively suppressed.

The magnetic fluid 55 is configured by dispersing magnetic fine particles such as Fe ₃ O ₄ in a surfactant and base oil, and has a characteristic of reacting when the magnet is brought close to the magnet. Therefore, as shown in FIG. 3, the magnetic fluid 55 is held by a magnetic circuit formed by a ring-shaped magnet 51, holding members 52 a and 52 b that hold the magnet 51, and a cylindrical magnetic body 53. It is stably held in the gap G between the members 52a and 52b and the magnetic body 53, and seals the opening 30a.

  Further, in this embodiment, when the thickness of the pair of holding members 52a and 52b that sandwich the ring-shaped magnet 51 is T1 and T2, respectively, the thickness of the holding member 52a on the sealing target member side is the opposite side. The holding member 52b is formed to be thicker (T1> T2). Furthermore, in this embodiment, the separation distance between the magnetic seal mechanism 50 and the member to be sealed (the distance between the holding member 52a and the front end surface 23a of the outer ring 23 of the one-way clutch 20) L is 5 mm or less. The direction is made more compact.

  According to the configuration of the present embodiment, the opening 1B of the housing recess 1A is effectively and reliably sealed by the magnetic seal mechanism 50 that holds the magnetic fluid 55 by the magnetic circuit described above. Inundation can be reliably prevented, and various drive elements including the one-way clutch 20 and the pinion gear 7 housed in the housing recess 1A can be protected from seawater, sand, foreign matter, and the like. For this reason, it is possible to always obtain a stable driving performance (for example, a reverse rotation prevention function, a winding driving performance, etc.) even in a harsh environment where water or the like easily enters.

  In the above-described configuration, the magnetic seal mechanism 50 includes a ring-shaped magnet 51 and a cylindrical magnetic body 53 that is fitted to the pinion gear 7 and forms a magnetic circuit with the ring-shaped magnet 51. The magnetic fluid 55 is held between a ring-shaped magnet 51 and a magnetic body 53. If the magnetic seal is configured by fitting the cylindrical magnetic body 53 to the pinion gear 7 in this way, for example, the pinion gear 7 does not need to be formed of a magnetic material that easily corrodes. Therefore, the material for forming the pinion gear 7 is not restricted, so that the most suitable material can be selected. . In addition, the cylindrical magnetic body 53 to be fitted allows the concentricity in the seal area (the concentricity between the pinion gear 7 and the magnetic seal) to be obtained with high accuracy, and therefore a reliable sealing state is always realized. And stability of waterproof performance can be achieved.

  Furthermore, according to the configuration of the fishing reel described above, with respect to the pair of holding members constituting the magnetic seal mechanism 50, the thickness of the holding member 52a on the sealing target member side such as the one-way clutch 20 is set on the opposite side. By making it thicker than the thickness of the holding member 52b (T1> T2), a portion where magnetism flows in the holding member 52a becomes wider, and the magnetic circuit formed thereby has a lower magnetic flux density on the sealing target member side. Thus, it is possible to reduce the magnetic flux leaking to the sealing target member side. That is, as described above, magnetic flux leaks to the one-way clutch 20 even if the separation distance between the magnetic seal mechanism and the one-way clutch is shortened (5 mm or less) in order to make the reel body compact. Therefore, the performance (rotational performance, etc.) of the one-way clutch 20 including parts made of a magnetic material is suppressed from being deteriorated. Further, since the leakage magnetic flux is reduced, the magnetic flux in the magnetic circuit is not lowered, and the magnetic fluid 55 can be stably held, and a stable sealing characteristic can be obtained over a long period of time. Is possible.

  4 and 5 are diagrams showing a second embodiment in which the magnetic seal mechanism is changed. In the embodiments described below, the same components as those of the above-described magnetic seal mechanism are denoted by the same reference numerals, and the description thereof is simplified or omitted.

  The magnetic seal mechanism 50A shown in FIG. 4 and FIG. 5 has a ring-shaped magnetic body (magnetic) spaced apart from the ring-shaped magnet 51 on the radially outer side of the ring-shaped magnet 51 of the pair of holding members 52a and 52b. A guide plate 57 is sandwiched. Such a ring-shaped magnetic body 57 includes a ring-shaped magnet 51, a pair of holding members 52a and 52b, and a cylindrical magnetic body 53 (formed inside in the radial direction). In addition, the ring-shaped magnet 51, the pair of holding members 52a and 52b, and the ring-shaped magnetic body 57 form a magnetic circuit (referred to as a second magnetic circuit formed outside in the radial direction). Thus, leakage of the magnetic flux from the ring-shaped magnet 51 is suppressed.

  That is, by forming the second magnetic circuit, the magnetic flux leaking toward the member to be sealed can be caused to flow in the second magnetic circuit, so that the magnetic flux leaks to the one-way clutch 20. It is possible to suppress the performance of the one-way clutch 20 including a component made of a magnetic material from being deteriorated. In such a configuration, even if the thicknesses T1 and T2 of the pair of holding members 52a and 52b are the same, it is possible to reduce magnetic flux leakage to the one-way clutch side, but FIG. 6 and FIG. As in the first embodiment described above, the holding member 52a on the one-way clutch side is further thickened (T1> T2) as in the magnetic seal mechanism 50B (third embodiment) shown in FIG. In addition, the magnetic flux density in the holding member 52a can be reduced, and the leakage magnetic flux toward the one-way clutch can be further reduced.

8 and 9 are diagrams showing a fourth embodiment of the present invention.
This magnetic seal mechanism 50C is formed by integrally forming a ring-shaped magnetic body 57 in the magnetic seal mechanism 50B shown in FIGS. 6 and 7 together with holding members 52a and 52b.
With this configuration, the number of parts can be reduced, and workability at the time of assembling can be improved.

10 and 11 are views showing a fifth embodiment of the present invention.
In this embodiment, the one-way clutch 20 having the above-described configuration is installed so that the large opening side faces the side opposite to the magnetic seal mechanism 50D. When the switching operation lever 28 provided outside is rotated, the engaging portion of the switching cam 28a is installed on the reel unit side. Specifically, a cap-like cover body 1D constituting the reel body is fixed to the front end of the reel body 1, and the one-way clutch 20 and the magnetic seal mechanism 50D are accommodated therein. For this reason, the magnetic seal mechanism 50D is installed flush with the rear end surface 1D ′ of the cover body 1D, and the holding member 52a on the sealing target member side is the rear end bent portion of the outer ring 23 of the one-way clutch 20. It arrange | positions so that the rear-end surface of 23c may be contacted. That is, in such an arrangement mode, the magnetic seal mechanism 50D and the one-way clutch 20 that is a member to be sealed can be compactly accommodated in the cap-shaped cover body 1D.

  Further, in this embodiment, the inner ring 21 of the one-way clutch that is fitted to the pinion gear 7 is extended to the spool side as it is so as to have a function as a magnetic portion 53d that forms a magnetic circuit of the magnetic seal mechanism 50D. ing.

  Further, in the magnetic seal mechanism 50D of the present embodiment, when the gap between the ring-shaped magnet 51 and the magnetic part 53d is L1, and the gap between the ring-shaped magnet 51 and the ring-shaped magnetic body 57 is L2, L1 < The thickness of the holding member 52a on the one-way clutch side is set to be larger than the thickness of the holding member 52b on the opposite side.

  In general, the installation direction of the one-way clutch 20 is greatly affected by the influence of the clutch ON / OFF mechanism design (light weight, stabilization of operation, etc.) such as the axial length of the switching cam 28a. . In this case, when a general magnetic seal mechanism is provided with the installation direction of the one-way clutch 20 as shown in FIGS. 10 and 11, contact with the outer ring 23 (rear end bent portion 23 c) of the one-way clutch 20. There is a possibility that magnetic flux leaks to the one-way clutch side because the surface becomes large, but by arranging the magnetic seal mechanism 50D configured as described above, such magnetic flux leakage can be reduced as much as possible. It becomes possible, and the freedom degree of the design regarding the installation mode of the one-way clutch 20 can be improved.

  That is, with respect to the holding members 52a and 52b, by increasing the thickness of the holding member 52a on the one-way clutch side, it is possible to reduce magnetic flux leakage to the one-way clutch side as in the above-described embodiment. . In addition, the ring-shaped magnetic body (magnetic induction plate) 57 is sandwiched between the pair of holding members 52a and 52b in the radially outward direction of the ring-shaped magnet 51 so as to be separated from the ring-shaped magnet 51. The second magnetic circuit is formed outside in the radial direction, and leakage of magnetic flux from the ring-shaped magnet 51 can be suppressed.

  Further, the gap L1 between the ring-shaped magnet 51 and the magnetic part 53d is made smaller than the gap L2 between the ring-shaped magnet 51 and the ring-shaped magnetic body 57 (L1 <L2). The magnetic flux is concentrated on the seal portion side (magnetic fluid 55 side) having a relatively small separation distance, and accordingly, the leakage magnetic flux can be reduced. Further, since the magnetic flux can be concentrated on the magnetic fluid 55 side, the size of the ring-shaped magnet 51 can be reduced correspondingly, and the size reduction can be achieved.

  As described above, since the leakage of magnetic flux to the one-way clutch 20 can be reduced, the one-way clutch 20 in this embodiment extends the inner ring 21 fitted to the pinion gear 7 to the spool side as it is. The inner ring 21 has a function as a magnetic part 53d that forms a magnetic circuit of the magnetic seal mechanism 50D. That is, since the leakage magnetic flux to the one-way clutch can be reduced, the inner ring 21 can also have such a function, thereby reducing the number of parts.

Further, in the above-described configuration, the radial thickness T3 of the ring-shaped magnetic body 57 is set to be equal to or greater than the holding member 52a thickness T1 on the sealing target member side of the pair of holding members 52a and 52b. It is preferable (T3 ≧ T1).
Although the thickness of the holding member 52a is larger than the thickness of the holding member 52b, the leakage magnetic flux to the one-way clutch side can be reduced, but the radial direction of the ring-shaped magnetic body 57 can be reduced. If the thickness of the film is made too thin, leakage magnetic flux from the part may be generated. For this reason, by setting the thickness of the ring-shaped magnetic body 57 to be thick, magnetism easily flows through that portion, and magnetic flux leakage from the outside in the radial direction can be reduced.
In addition, about the above structures, it is possible to apply to each embodiment mentioned above.

12 and 13 are views showing a sixth embodiment of the present invention.
In the magnetic seal mechanism 50E of this embodiment, the ring-shaped magnet 51 shown in the fifth embodiment described above and the pair of holding members 52a and 52b that sandwich and hold the magnet 51 are attached to the magnetic portion 53d. The gaps are set to be substantially the same.
According to such a configuration, since the position of the ring-shaped magnet 51 can be made closer to the position of the magnetic fluid 55, the magnetic flux density in the seal region can be improved, and the size of the ring-shaped magnet 51 can be made compact. It becomes possible to do. Furthermore, by making the ring-shaped magnet 51 compact, it is possible to reduce the leakage magnetic flux in the radially outer region.
Such a configuration can be applied to each of the above-described embodiments.

  14 to 16 show a seventh embodiment of the present invention. In the above-described embodiment, the spinning reel is illustrated as the fishing reel. However, in the seventh embodiment, an example in which the present invention is applied to the dual-bearing reel is shown.

  As shown in the figure, the reel body 101 of the dual-bearing type reel includes left and right frames 102a and 102b, and left and right side plates 103a and 103b attached to the left and right frames 102a and 102b with a predetermined space. A spool shaft 105 is rotatably supported between the left and right frames 102a and 102b (left and right side plates 103a and 103b). A spool 106 around which a fishing line is wound is attached to the spool shaft 105.

  A handle shaft 109 on which a handle 108 is mounted is rotatably supported on the right side plate 103b side. A winding drive mechanism is coupled to the handle shaft 109, and the spool 106 is driven to rotate via the winding drive mechanism by rotating the handle 108. The handle shaft 109 is rotatable only in the fishing line winding direction by a one-way clutch 110 interposed between the handle plate 109 and the right side plate.

  The winding drive mechanism includes a drive gear 112 that is rotatably supported on the handle shaft 109 via a drag mechanism, and a pinion gear 113 that meshes with the drive gear 112. The pinion gear 113 is configured to be connected to and disconnected from the spool shaft 105 via a known clutch mechanism. When the clutch is in an ON state, the rotational driving force of the handle 108 is applied to the spool 106 via the drive gear 112 and the pinion gear 113. In the clutch OFF state, the driving force transmission state is canceled and the spool 106 is set in a free rotation state. The above-described clutch operation is performed by operating an operation lever (not shown) protruding from the reel body 101.

  A known level wind mechanism 120 is provided between the left and right side plates 103 a and 103 b in front of the spool 106, and is configured to wind the fishing line evenly around the spool 106.

  In the present embodiment, the right side plate 103b of the reel body 101 is formed with an accommodation recess 135 that partially accommodates a handle shaft 109 as a drive unit that rotates in conjunction with the operation of the handle 108. In the housing recess 135, the one-way clutch 110 is housed and held in a positioned state, and a bearing 130 that rotatably supports the handle shaft 109 is disposed. The accommodating recess 135 has an opening 135a on the handle 108 side, and the opening 135a is provided with a magnetic seal mechanism 50 configured similarly to the above-described embodiment.

  In this configuration, an operating body 171 constituting a known drag mechanism 170 is screwed to the right end portion of the handle shaft 109. When the operating body 171 is rotated, the first pressing body 173, which is a collar member that is fitted to the handle shaft 109 so as to be movable in the axial direction and integrally rotatable, moves in the axial direction, via the disc spring 175. Then, the second pressing body 177 serving also as the inner ring of the one-way clutch 110 is pressed, the friction member 178 is pressed with a desired pressing force, and a braking force is generated between the handle shaft 109 and the drive gear 112.

  A right end portion of the handle shaft 109 is rotatably supported by a bearing 130 with respect to the reel body 101 (cylindrical support portion 135A having an accommodation recess 135 formed in the right side plate 103b constituting the reel body 101). Yes. In this case, the bearing 130 is installed on the first pressing body 173 that is a collar member.

  The magnetic seal mechanism 50 is configured to seal the bearing 130 and the one-way clutch 110 that are members to be sealed, and is installed on the handle 108 side with respect to the bearing 130. In this case, the magnetic seal mechanism 50 includes a ring-shaped magnet 51 arranged so as to surround the handle shaft 109, and a pair of holding members 52a and 52b for holding (holding) the magnetic seal mechanism 50, as in the embodiment described above. A cylindrical magnetic body 53 that is fitted (externally fitted) to the first pressing body 173 fitted to the handle shaft 109 so as to be integrally rotatable and has a length facing at least the holding members 52a and 52b, and a holding member The magnetic fluid 55 is held between 52a and 52b and a cylindrical magnetic body 53. Of the pair of holding members, the holding member 52a on the sealing target member side is formed thicker than the holding member 52b on the opposite side, as in the above-described embodiment.

  In addition, the ring-shaped magnet 51 of the magnetic seal mechanism 50 having the above-described configuration and the holding members 52a and 52b that hold the magnet 51 are both fitted to the inner surface of the cylindrical support portion 135A adjacent to the bearing 130 (internal). The holding member 52b is retained by the nonmagnetic washer 181 that is retained by the inner surface of the cylindrical support portion 135A via the retaining ring 180, and the retaining member 52a attaches the nonmagnetic washer 182 to the retaining member 52b. It is applied to the bearing 130 with an interposition.

  Also with such a magnetic seal mechanism 50, the inside of the accommodation recessed part 135 can be reliably sealed, and the leakage magnetic flux to the bearing 130 side can be reduced, similar to the above-described embodiment. It becomes possible to obtain an effect.

  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 can be installed adjacent to a member (seal target member) that requires a seal, such as a bearing portion of various fishing reels. The part where the member is installed is not particularly limited.
In addition, the drive unit provided with the magnetic seal mechanism is not limited to the rotating member (pinion gear 7) as described above, but a drive shaft that slides in the axial direction, such as a spool shaft, or such a drive. A member that integrally rotates or slides with the shaft may be used. In addition, regarding the magnetic part provided in the drive part, in the above-described embodiment, the drive part is made of a non-magnetic material, and a cylindrical member (collar) made of a magnetic material is disposed on the outer periphery thereof. When configuring the seal mechanism, the drive unit itself may be configured as a magnetic body.

Moreover, about the cylindrical magnetic body fitted with respect to the drive part comprised with a nonmagnetic material, it may be fitted externally, and depending on the structure of a seal part, it is fitted internally It may be. Furthermore, when configuring the magnetic seal mechanism, the shape of the holding member that holds the ring-shaped magnet, the installation mode with respect to the reel body, and the like can be modified as appropriate.
Furthermore, the constituent members shown in the respective drawings described above can be implemented in appropriate combination.

1,101 Reel body 3,108 Handle 10,106 Spool 20,110 One-way clutch (member to be sealed)
50, 50A-50E Magnetic seal mechanism cylindrical shaft portion 51 Ring-shaped magnets 52a, 52b Holding members 53, 53d Magnetic portion 55 Magnetic fluid 57 Ring-shaped magnetic body 135 Bearing (member to be sealed)

Claims (9)

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 main body includes a drive unit in which a member to be sealed is disposed, and a magnetic seal mechanism disposed adjacent to seal the member to be sealed,
The magnetic seal mechanism includes a ring-shaped magnet disposed at a predetermined interval with respect to the drive unit, a pair of holding members that sandwich and hold the ring-shaped magnet, and a magnet provided in the drive unit. And a magnetic fluid held by a magnetic circuit formed by the ring-shaped magnet, the pair of holding members, and the magnetic part,
Of the pair of holding members that sandwich the ring-shaped magnet, when the thickness of the holding member on the sealing target member side is T1, and the thickness of the holding member on the opposite side is T2, T1> T2 ,
In the pair of holding members, a ring-shaped magnetic body is sandwiched and spaced apart from the ring-shaped magnet, radially outward of the ring-shaped magnet,
A fishing reel characterized in that L1 <L2 where L1 is a gap between the ring-shaped magnet and the magnetic part, and L2 is a gap between the ring-shaped magnet and the ring-shaped magnetic body .   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 main body includes a drive unit in which a member to be sealed is disposed, and a magnetic seal mechanism disposed adjacent to seal the member to be sealed,
The magnetic seal mechanism includes a ring-shaped magnet disposed at a predetermined interval with respect to the drive unit, a pair of holding members that sandwich and hold the ring-shaped magnet, and a magnet provided in the drive unit. And a magnetic fluid held by a magnetic circuit formed by the ring-shaped magnet, the pair of holding members, and the magnetic part,
Of the pair of holding members that sandwich the ring-shaped magnet, when the thickness of the holding member on the sealing target member side is T1, and the thickness of the holding member on the opposite side is T2, T1> T2,
In the pair of holding members, a ring-shaped magnetic body is sandwiched and spaced apart from the ring-shaped magnet, radially outward of the ring-shaped magnet,
The fishing reel according to claim 1, wherein a thickness of the ring-shaped magnetic body in a radial direction is equal to or greater than a thickness of the holding member on the sealing target member side of the pair of holding members. 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 main body includes a drive unit provided with a magnetic target portion on which a seal target member is disposed, and a magnetic seal mechanism disposed adjacently so as to seal the seal target member.
The magnetic seal mechanism includes a ring-shaped magnet disposed at a predetermined interval with respect to the magnetic part, a pair of holding members that sandwich and hold the ring-shaped magnet, the ring-shaped magnet, A pair of holding members, and a magnetic fluid held in a magnetic circuit formed by the magnetic part,
In the pair of holding members, a ring-shaped magnetic body is sandwiched and spaced apart from the ring-shaped magnet, radially outward of the ring-shaped magnet,
A fishing reel characterized in that L1 <L2 where L1 is a gap between the ring-shaped magnet and the magnetic part, and L2 is a gap between the ring-shaped magnet and the ring-shaped magnetic body. 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 main body includes a drive unit provided with a magnetic target portion on which a seal target member is disposed, and a magnetic seal mechanism disposed adjacently so as to seal the seal target member.
The magnetic seal mechanism includes a ring-shaped magnet disposed at a predetermined interval with respect to the magnetic part, a pair of holding members that sandwich and hold the ring-shaped magnet, the ring-shaped magnet, A pair of holding members, and a magnetic fluid held in a magnetic circuit formed by the magnetic part,
In the pair of holding members, a ring-shaped magnetic body is sandwiched and spaced apart from the ring-shaped magnet, radially outward of the ring-shaped magnet,
The fishing reel according to claim 1, wherein a thickness of the ring-shaped magnetic body in a radial direction is equal to or greater than a thickness of the holding member on the sealing target member side of the pair of holding members. The fish according to claim 1 or 3, wherein a thickness of the ring-shaped magnetic body in a radial direction is equal to or greater than a thickness of the holding member on the sealing target member side of the pair of holding members. Fishing reel. Said ring-shaped magnetic body, fishing reel according to claim 1, any one of 5, characterized in that it is the pair of holding members integrally formed.   The ring-shaped magnet and the pair of holding members are disposed so as to have substantially the same gap with respect to the magnetic part. Fishing reel.   The fish according to any one of claims 1 to 7, wherein the member to be sealed is a one-way clutch, and a large opening side of the one-way clutch is installed on a side opposite to the magnetic seal mechanism. Fishing reel.   The said seal | sticker object member is a one-way clutch, The inner ring | wheel of the one-way clutch fitted to the said drive part comprises the magnetic part of the said magnetic seal mechanism, The one of Claim 1 to 7 characterized by the above-mentioned. The fishing reel according to item 1.

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