JP2016101096A - Fishing reel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fishing reel equipped with a magnetic sealing mechanism which surely maintains sealing effect to a one-way clutch and easy in assembly and maintenance.SOLUTION: A one-way clutch built in a fishing reel includes: a frame body 21 in which a recession 21a for inserting a pinion 5 therethrough is formed; an outer ring 23 fixed to the inner surface of a circumferential wall 21b forming the recession; an inner ring 25 arranged integrally and rotatably with the pinion 5; a plurality of rolling members 27 arranged between the inner ring 25 and the outer ring 23; and a holding member 29 for holding the plurality of rolling members 27. The opened side of the recession of the frame body 21 is closed, to which a cover member 40 is attached which is provided with a magnetic sealing mechanism 50 for making a gap with the inner ring and forming a sealing film formed of a magnetic fluid between the gap with the inner ring. The outer ring 23 and a holding member 29 holding the plurality of rolling members 27 are housed inside the frame body 21, the cover member 40 is attached thereto, and thereby the structure is unitized.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a fishing reel provided with a seal mechanism that seals a reverse rotation prevention mechanism that prevents reverse rotation of a drive shaft that is rotationally driven by a rotation operation of a handle.

  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. Such drive shafts are arranged at a plurality of locations in the fishing reel. Some of the drive shafts allow normal rotation of the drive shaft (rotation in the direction of winding the fishing line) and reverse rotation. Some have a reverse rotation prevention mechanism for preventing rotation. For example, as disclosed in Patent Document 1, such a reverse rotation prevention mechanism is known in which a recess is formed in the front portion of a reel body and a roller type one-way clutch is accommodated therein. .

  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. Intrusion into the one-way clutch. Therefore, in Patent Document 1, a cover member having a synthetic resin elastic body sealing portion (elastic seal) on the outer periphery is press-fitted into the inner surface of the recess, and the cover member is prevented from coming off to prevent backlash and waterproofing. A configuration is disclosed.

  Patent Document 2 discloses a configuration in which a one-way clutch is housed in a case and a cover member is press-fitted into a case opening to form a unit, and the unitized one-way clutch is fixed to a front portion of a reel body with a screw. Is disclosed. Further, Patent Document 3 discloses a magnetic seal mechanism in which a one-way clutch is accommodated in a recess formed in the front portion of a reel body, and a magnetic circuit is formed between the opening of the recess and a pinion to hold a magnetic fluid. A configuration for sealing a one-way clutch is disclosed.

Japanese Patent No. 3981219 Japanese Patent No. 3339532 Japanese Patent No. 5249076

  However, in the configuration disclosed in Patent Document 1 described above, the concentricity between the lip portion of the elastic seal provided on the cover member and the drive shaft (pinion) is highly accurate due to the influence of the variation in component dimensions. Therefore, the frictional contact pressure with respect to the pinion is not constant, the waterproof performance is not stable, and the waterproof performance is deteriorated due to wear of the lip portion. Further, since the cover member that frictionally contacts the cylindrical portion formed in the front portion of the main body also regulates the backlash of the one-way clutch forward, the waterproof performance is further reduced.

  In the configuration disclosed in Patent Document 2 described above, since the members constituting the one-way clutch housed between the case and the cover member are assembled from the axial direction, the assembly can be facilitated, The unitization makes handling during assembly convenient, but the one-way clutch that performs an important function as a reel cannot be sealed to stabilize the reverse rotation prevention function.

  In the configuration disclosed in Patent Literature 3 described above, the sealing function is stabilized by the magnetic seal mechanism and the rotation of the drive shaft is smooth, but the front opening of the reel body that houses the one-way clutch is provided. Since the holding plate that holds the magnet is attached or the magnet (holding plate) is supported on the cover member fixed to the opening, the one-way clutch and magnetic seal mechanism are incorporated in separate processes, making it difficult to handle parts. As a result, the installation work becomes complicated. Further, since the one-way clutch and the magnetic seal mechanism are differently assembled, the maintainability inside the power transmission mechanism is also inferior.

  The present invention has been made paying attention to the above problems, and includes a magnetic seal mechanism that reliably maintains the sealing effect for the one-way clutch that prevents the reverse rotation of the drive shaft, and that is easy to install and maintain. An object is to provide a fishing reel.

  In order to achieve the above-described object, the fishing reel according to the present invention performs reverse rotation of the drive shaft on the drive shaft of the power transmission mechanism that transmits the rotation operation of the handle rotatably supported by the reel body. In the configuration in which the one-way clutch for preventing is disposed, the one-way clutch includes a frame body having a recess through which the drive shaft is inserted, and an outer ring fixed to an inner surface of a circumferential wall forming the recess. An inner ring disposed to rotate integrally with the drive shaft, a plurality of rolling members disposed between the inner ring and the outer ring, and a holding member that holds the plurality of rolling members. The frame body is provided with a magnetic seal mechanism that closes the opening side of the recess and creates a seal film with a magnetic fluid between the inner ring and a gap between the frame and the inner ring. A cover member is attached, the outer ring, and A holding member holding the serial plurality of rolling members accommodated in the frame body, characterized in that the cover member in which the said magnetic seal mechanism is provided unitized and attached to the frame.

  According to the configuration of the fishing reel described above, the one-way clutch disposed on the drive shaft of the power transmission mechanism accommodates the outer ring and the holding member holding the plurality of rolling members in the frame body, and the frame body. Since the cover member that closes the opening side of the recess is provided with a magnetic seal mechanism as a unit, handling as a part is improved and it can be easily incorporated into a fishing reel. That is, when the one-way clutch is incorporated into the reel unit, the magnetic seal mechanism is integrated, so that the handleability can be improved and the maintainability is also improved. In addition, the cover member is provided with a magnetic seal mechanism that creates a gap between the inner ring and a magnetic fluid between the inner ring and the inner ring. The sealing performance with respect to the inside of the one-way clutch is maintained for a long time.

  ADVANTAGE OF THE INVENTION According to this invention, the fishing reel provided with the magnetic seal mechanism which maintains reliably the sealing effect with respect to the one-way clutch which prevents reverse rotation of a drive shaft, and is easy to install and maintainability is obtained.

The figure which shows one Embodiment (spinning reel) of the fishing reel which concerns on this invention. The disassembled perspective view which shows the state which removed the rotor and spool of the spinning reel shown in FIG. Sectional drawing which shows the one-way clutch part integrated in the spinning reel shown in FIG. The front view which looked at FIG. 3 from the spool side. The figure which shows the 1st modification of the magnetic seal mechanism which seals the one-way clutch unitized. The figure which shows the 2nd modification of the magnetic seal mechanism which seals the one-way clutch unitized. The figure which shows the 3rd modification of the magnetic-seal mechanism which seals the one-way clutch unitized.

Hereinafter, embodiments of a fishing reel according to the present invention will be described with reference to the drawings.
FIG. 1 to FIG. 3 are views showing an embodiment (spinning reel) of a fishing reel according to the present invention, FIG. 1 is a diagram showing the overall configuration, and FIG. 2 is a drawing of the spinning reel shown in FIG. FIG. 3 is an exploded perspective view showing a state where the rotor and the spool are removed, and FIG. 3 is a cross-sectional view showing a one-way clutch portion incorporated in the spinning reel shown in FIG.

  A reel body 2 of the spinning reel 1 is provided with a handle 3 that is wound up. When the handle 3 is rotated, a fishing line is fed to the spool 10 via a power transmission mechanism provided in the reel body. Is to be wound.

  As is well known, the power transmission mechanism includes a handle shaft mounted on the handle 3 and rotatably supported via a bearing with the reel body, and a drive gear (drive gear) attached to the handle shaft. And a pinion (drive shaft) 5 that extends in a direction perpendicular to the handle shaft and is rotatably supported via a bearing 4 and has a tooth portion that meshes with the drive gear.

  A rotor 9 including a bail 9a and a fishing line guide device 9b is attached to the tip of the pinion 5 so as to rotate integrally by screwing a rotor nut 7 to the male screw portion 5a. The pinion 5 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 5. A known oscillating mechanism is connected to the base end side of the spool shaft 11, and when the handle shaft is rotated by a rotation operation of the handle 3, the spool shaft 11 is connected to the shaft via the power transmission mechanism. While being reciprocated along the direction, the rotor 9 is driven to rotate, whereby the fishing line is evenly wound around the spool 10 that moves back and forth via the fishing line guide device 9b.

  The pinion 5 is provided with a one-way clutch 20 constituting a reverse rotation prevention mechanism. The one-way clutch 20 has a function of allowing the handle 3 to rotate in the direction of winding the fishing line (forward rotation of the pinion 5) and preventing rotation in the direction of feeding the fishing line (reverse rotation of the pinion 5). The unit is configured so that the reel body 2 can be easily assembled. That is, as shown in FIG. 2, the main components are unitized together with a magnetic seal mechanism 50 (to be described later) so that the assembling work can be easily performed with the pinion 5 inserted through the spool shaft 11 protruding from the reel body 2. Has been.

  The one-way clutch 20 of the present embodiment includes a frame body 21 having a recess 21a having a circular cross section, an outer ring 23 fixed to the inner surface of a circumferential wall 21b that forms the recess 21a, and a pinion 5 that rotates together. A plurality of rolling elements that are disposed between the inner ring 25 and the inner ring 25 and the outer ring 23 that can be arranged and can be switched between a free rotation area and a wedge area between the inner ring 25 and the outer ring 23 as is well known. A member 27 and a holding member 29 that holds the plurality of rolling members 27 are provided.

  The frame body 21 includes a bottom wall 21c integrated with a circumferential wall 21b, and a hole (opening) 21d through which the pinion 5 is inserted is formed in a central portion of the bottom wall 21c. The bottom wall 21c is positioned, for example, in a concave-convex engagement with the front end surface of the reel body 2, and the frame body 21 is fixed to the front end surface of the reel body 2 by a fixing screw 70. Is done. Although the number and location of the fixing screws 70 are not limited, in this embodiment, two places are provided at intervals of 180 ° as will be described later. Further, when the frame body 21 is fixed to the reel body 2, the bottom wall 21 c has a function of coming into contact with the outer ring of the bearing 4 to prevent the bearing 4 from coming off.

  Concave portions 21b 'are formed on the inner surface of the circumferential wall 21b at a predetermined interval, and protrusions 23a formed at a predetermined interval so as to protrude radially from the outer ring 23 are fitted into the concave portion 21b'. As a result, the outer ring 23 is fixed to the inner surface of the circumferential wall 21b. On the inner peripheral surface side of the outer ring 23, as is well known, a free rotation region in which the rolling member 27 can freely rotate along the circumferential direction and a wedge region in which rotation of the rolling member is prevented along the circumferential direction. It is formed continuously. The plurality of rolling members 27 are held between the inner and outer rings by a holding member 29, and a biasing spring 29 a is disposed between the holding member 29 and each rolling member 27. Thus, the rolling member 27 is constantly biased to the wedge region.

  The inner ring 25 is disposed so as to be integrally rotatable with respect to the pinion 5. That is, as shown in FIG. 2, the outer peripheral surface of the pinion 5 is formed in a non-circular cross section, and the inner ring 25 can be integrally rotated together with the pinion 5 by fitting the inner ring 25 to this portion. Yes. The inner ring 25 is a constituent element of the one-way clutch 20, but may not be unitized with the frame body 21. That is, after the inner ring 25 is fitted to the pinion 5, the unitized frame 21 is fixed to the reel body 2, or the unitized frame 21 is fixed to the reel body 2. Thereafter, the inner ring 25 is fitted to the pinion 5 so that the one-way clutch 20 is disposed on the pinion 5 that is a drive shaft.

  The inner ring 25 is formed to be longer than the axial length of the frame body 21, and as shown in FIG. 3, when the inner ring 25 is fitted to the pinion 5, the rear end portion of the inner ring 25 contacts the inner ring of the bearing 4. In this state, the front end side protrudes from the rolling member 27 to the spool side (a magnetic seal mechanism 50 is disposed on the protruding portion as described later). Further, a recess 25a is formed on the front end side of the inner ring 25, and a shaft projection 9d of the rotor 9 is fitted therein, so that the rotor 9 and the inner ring 25 are integrated, and the rotor nut 7 is screwed together. As a result, the rotor 9 is fixed to the pinion 5 by being prevented from rotating. A seal member 30 is disposed between the inner ring 25 and the shaft projection 9d of the rotor 9 to be fitted.

  A switching plate 31 integrated with the holding member 29 is interposed between the holding member 29 and the bottom wall 21 c of the frame body 21. That is, the holding member 29 can be rotated by a predetermined angle in the circumferential direction together with the switching plate 31 in the frame body 21, and the switching plate 31 has an operation member via an opening 21 f formed in the bottom wall 21 c. 35 operation pieces 35a are engaged. As shown in FIG. 1, the operation member 35 is exposed to the outside from the reel body 2, and when this portion is rotated, the operation piece 35a rotates the switching plate 31, and is held accordingly. The member 29 is rotated.

  The operation member 35 rotates the holding member 29 so that the rolling member 27 is in a position where it is held in the free rotation area and a position where it is held in the wedge area. That is, when the rolling member 27 is held in the free rotation region, the pinion 5 is in a state capable of forward rotation / reverse rotation, and when the rolling member 27 is held in the wedge region, only forward rotation is allowed and reverse rotation is not possible. It becomes impossible. Note that the one-way clutch may be configured so that the pinion (drive shaft) 5 can always rotate only forward without performing the switching operation as described above.

  The frame 21 is provided with a magnetic seal mechanism 50 that closes the opening side of the recess 21a and forms a seal film with a magnetic fluid between the inner ring 25 and a gap between the frame 21 and the inner ring 25. The cover member 40 is attached. The cover member 40 can be fixed to the frame body 21 by bonding, screwing, screws, or the like. In addition, a seal member 41 may be interposed between the cover member 40 and the outer ring 23, so that moisture, foreign matter, or the like can enter from the gap between the cover member and the frame. In addition to being able to prevent it, it is possible to absorb axial backlash.

  The cover member 40 is formed with a circular opening 40a in the central region thereof, and the front end side of the inner ring 25 is positioned at the opening 40a. That is, by forming a seal film by the magnetic seal mechanism 50 in this opening portion, it is possible to prevent moisture, foreign matter and the like from entering along the surface of the inner ring 25 from the outside, and reliably seal the inside of the one-way clutch. I have to.

  The magnetic seal mechanism 50 provided in the cover member 40 has a function of forming a magnetic circuit by providing a gap with the outer peripheral surface of the inner ring 25 and holding a magnetic fluid in the gap portion. For this reason, the inner ring 25 is made of a magnetic material, or made of a non-magnetic material and covered with a magnetic collar on the surface. Further, the pinion 5 to which the inner ring 25 is fitted may be made of a magnetic material, but can be made of a nonmagnetic material such as a copper alloy or an aluminum alloy.

  The magnetic seal mechanism 50 of the present embodiment includes a magnet 51 disposed at a predetermined interval with respect to the inner ring 25 and a holding plate (electrode plate) 52 formed of a pair of magnetic materials that sandwich and hold the magnet 51. 53, and the magnetic fluid S is held in the magnetic circuit formed by the magnet 51, the holding plate (the inner holding plate 52, the outer holding plate 53), and the inner ring 25, and the inside of the one-way clutch is It is sealed. In this case, the magnet 51 and the holding plates 52 and 53 are formed in a ring shape so as to have a predetermined gap from the outer peripheral surface of the inner ring 25, and the gaps between the holding plates 52 and 53 and the inner ring 25 ( The magnetic fluid can be held over the entire circumference in a gap between the inner ring 25 and the circumferential surface of the inner ring 25 inserted through the circular opening 50a in FIG.

That is, the magnetic fluid S is composed of magnetic fine particles such as Fe ₃ O ₄ dispersed in a base oil with a surfactant, and has a characteristic of reacting when the magnet is brought close to the magnet. Yes. For this reason, the magnetic fluid is composed of the ring-shaped magnet 51, the holding plates 52 and 53 holding and holding the magnet 51, and the magnetic circuit formed by the inner ring 25 made of a magnetic material. The one-way clutch 20 is sealed by being stably held in the gap between the two and the entire circumference. In addition, when a clearance gap arises between the holding plates 52 and 53 and the magnet 51, you may interpose the spacer 55 in the clearance gap.

  In the magnetic seal mechanism of the present embodiment, a circular recess is formed in the peripheral region of the opening 40a of the cover member 40, and the inner holding plate 52 holding the ring-shaped magnet 51 is press-fitted into the recess. By doing so, the ring-shaped magnet 51 and the inner holding plate 52 are positioned and fixed. In this case, the outer holding plate 53 is formed in a ring shape corresponding to the ring-shaped magnet 51, but the outer holding plate 53 of this embodiment is more radially outward than the held ring-shaped magnet 51. A protruding portion 53a protruding in the direction is formed. A pair of the protrusions 53a is formed at intervals of 180 °, and is fitted to a recess 40a having the same shape as the protrusion 53a formed on the upper surface of the cover member 40, and a fixing screw 70 is attached to the protrusion 53a. Thus, the outer holding plate 53 can be easily fixed to the cover member 40 without interfering with the ring-shaped magnet 51.

  Accordingly, the holding member 29 holding the rolling member 27 together with the switching plate 31 and the outer ring 23 are inserted from the axial direction into the recess 21 a of the frame body 21, and the inner holding plate 52 is interposed via the seal member 41. And the magnet 51 are attached to the cover member 40 so as to close the opening of the recess 21a, and the outer holding plate 53 is provided from above and the fixing screw 70 is screwed. The one-way clutch 20 having 50 can be unitized.

  That is, as shown in FIG. 2, the unitized one-way clutch 20 is attached to the reel body 2 through the pinion 5 from which the spool shaft 11 protrudes from the spool side, and is unitized. The inner ring 25 is fitted to the portion of the circular opening 50a of the No. 20, and a magnetic fluid is filled in the gap formed on the outer periphery of the inner ring 25, so that it can be easily assembled and further integrated with the magnetic seal mechanism 50. In addition, since the one-way clutch can be removed, handling as a part is improved (incorporation and maintenance are improved). Further, the frame body 21 constituting the unit is in a state in which the opening side of the recess 21a is closed by the cover member 40, and a gap is formed between the cover member 40 and the inner ring 25 so as to contact the inner ring surface. In the meantime, since the magnetic seal mechanism 50 for forming the seal film by the magnetic fluid is provided, the sealing performance with respect to the inside of the one-way clutch is stabilized over a long period of time.

  In the configuration described above, the frame body 21 may be further fixed to the reel body 2 by the fixing screw 70 screwed into the protruding portion 53a of the outer holding plate. According to such a configuration, the one-way clutch (unitized one-way clutch) having a magnetic seal mechanism can be assembled to the reel body 2 by simply screwing the fixing screw 70, and the fixing screw 70 can be By detaching, the magnetic seal mechanism 50 and the one-way clutch 20 can be respectively removed, so that the ease of incorporation and maintenance can be improved.

  As for the fixing screw 70, as shown in FIG. 5, the outer holding plate 53 may be simply fixed to the cover member 40. That is, the cover member 40 may be fixed to the reel body 2 by a fixing screw 70 a different from the fixing screw 70. According to such a configuration, since only the magnetic seal mechanism 50 can be removed from the cover member 40 while the frame body 21 and the cover member 40 are fixed to the reel body 2, the maintainability of the magnetic seal mechanism is improved. Can be planned.

  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.

  For example, in the magnetic seal mechanism 50 having the above-described configuration, the magnet 51 is sandwiched between the pair of holding plates 52 and 53, the protruding portion 53a is formed on the outer holding plate 53, and the fixing screw 70 is screwed into the protruding portion 53a. However, as shown in FIG. 6, the holding plates 52 and 53 may be configured in the same shape without forming the protruding portion. In this case, the cover member 40 may be attached to the frame body 21 by the fixing screw 70a, and the frame body 21 may be fixed to the reel body 2 using the fixing screw 70a. Further, the configuration of the magnetic seal mechanism 50 can be appropriately modified. As described above, if the magnetic fluid S can be held between the inner ring 25 and the holding plate, for example, as shown in FIG. You may arrange in. Furthermore, the shape of the holding plate that holds the ring-shaped magnet 51, the installation mode with respect to the cover member 40, and the like can be appropriately modified.

  Further, the unitized one-way clutch described above can be applied not only to spinning reels but also to various fishing reels such as being disposed on the handle shaft portion of a dual bearing type reel.

1 Spinning reel (fishing reel)
2 Reel body 3 Handle 5 Pinion (drive shaft)
10 Spool 20 One-way clutch 21 Frame 40 Cover member 50 Magnetic seal mechanism 51 Magnet

Claims (4)

In a fishing reel in which a one-way clutch that prevents reverse rotation of the drive shaft is disposed on a drive shaft of a power transmission mechanism that transmits a rotation operation of a handle rotatably supported by the reel body,
The one-way clutch is disposed so as to be able to rotate integrally with the drive shaft, a frame formed with a recess through which the drive shaft is inserted, an outer ring fixed to an inner surface of a circumferential wall forming the recess. An inner ring, a plurality of rolling members disposed between the inner ring and the outer ring, and a holding member that holds the plurality of rolling members,
The frame body is provided with a magnetic seal mechanism that closes the opening side of the recess and creates a gap between the inner ring and a magnetic film between the inner ring and a magnetic fluid. Is attached,
A holding member holding the outer ring and the plurality of rolling members is accommodated in the frame body, and a cover member provided with the magnetic seal mechanism is attached to the frame body to form a unit. Fishing reel. The magnetic seal mechanism includes a holding plate that holds a ring-shaped magnet that forms a magnetic circuit;
The fishing reel according to claim 1, wherein the holding plate is fixed to the cover member by a fixing screw. The holding plate has a protruding portion that protrudes radially outward from the ring-shaped magnet to be held,
The fishing reel according to claim 1, wherein the holding plate is fixed to the cover member by attaching a fixing screw to the projecting portion, and the cover member is attached to the frame body.   The fishing reel according to claim 3, wherein the frame is fixed to the reel body by the fixing screw.

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