Fishing reel and one-way clutch

Abstract

To provide a fishing reel that can make a reel body compact and lightweight, facilitates assembly, and can obtain a stable clutch operation.SOLUTION: A one-way clutch 20 for allowing rotation of a rotary drive shaft in one direction, and preventing rotation in the other direction is incorporated in a fishing reel. The one-way clutch comprises an assembly structure comprising an inner ring, an outer ring 27, a first retainer 23A comprising a retaining part for retaining a biasing spring for biasing a plurality of rolling members 25, and a second retainer 23B attached to the first retainer so as to clamp the outer ring 27 in an axial direction. A reel body is provided with a regulating part for regulating a movement of the one-way clutch in a rotation direction. Stoppers 23c and 27c protruding outward in a radial direction are formed in the first retainer 23A and the outer ring 27 respectively. The movement of the one-way clutch 20 in the rotation direction is regulated by the regulating part and the respective stoppers.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a fishing reel, and more particularly, to a fishing reel incorporating a one-way clutch for preventing reverse rotation of a drive shaft, and to a one-way clutch.

Background Art

[0002] Generally, a spinning reel, which is a fishing reel, incorporates a reverse prevention mechanism that allows the rotor to rotate in the fishing line winding direction by rotating the handle and prevents the rotor from rotating in the reverse direction when an attempt is made to rotate the handle in the reverse direction. Usually, the reverse prevention mechanism is composed of a one-way clutch including an inner ring that is non-rotatably fitted to a pinion gear, a cage disposed radially outward of the inner ring and holding a plurality of rolling members, and an outer ring disposed radially outward of the cage and non-rotatably fixed to the reel body.

[0003] The cage of the one-way clutch is fixed to the reel body by screwing, whereby the elastic force of a biasing spring that biases the rolling members is maintained, enabling the one-way clutch to rotate smoothly. However, screwing the cage to the reel body increases the size of the reel body, and problems such as a decrease in assemblability and the inability to perform individual performance inspections when the constituent members are incorporated individually occur. For this reason, for example, as seen in Patent Document 1 and the like, an assembly structure in which the constituent members of the one-way clutch are integrated is adopted, and the assembly to the reel body is made a screwing type (a screw seat is provided on the outside of the outer ring and fixed to the reel body).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the configuration disclosed in the above-mentioned Patent Document 1, it is necessary to provide screw holes for screwing the assembled structure, and it is necessary to ensure the strength on the reel body side. For this reason, simply assembling the one-way clutch is not sufficient for miniaturizing the reel body.

[0006] In addition, when assembling the one-way clutch, it is necessary to consider the configuration and arrangement of its constituent members. For example, if the cage is displaced with respect to the outer ring or varies in the axial direction, stable operation cannot be obtained as a one-way clutch (smooth rotation cannot be obtained, the braking time until reverse prevention is long, etc.), and furthermore, problems such as difficult assembly will occur.

[0007] The present invention has been made paying attention to the above-mentioned problems, and an object of the present invention is to provide a fishing reel incorporating a one-way clutch, in which the reel body can be made smaller and lighter, assembly is easy, and a stable clutch operation can be obtained. Another object of the present invention is to provide a one-way clutch capable of obtaining such an effect.

Means for Solving the Problems

[0008] In order to achieve the above-mentioned object, a fishing reel according to the present invention incorporates a one-way clutch that allows one-way rotation of a rotation drive shaft supported within the reel body and prevents rotation in the other direction. The one-way clutch includes an inner ring, an outer ring, a first cage having a holding portion for holding a biasing spring that biases a plurality of rolling members, and a second cage attached to the first cage so as to sandwich the outer ring in the axial direction, and has an assembly structure. A restricting portion is provided on the reel body to fix and restrict the movement of the one-way clutch in the rotational direction. Projections are formed on the first cage and the outer ring, respectively, protruding radially outward. The one-way clutch is characterized in that its movement in the rotational direction is restricted by the restricting portion of the reel body and the respective projections.

[0009] According to the fishing reel described above, since the one-way clutch is assembled, the assemblability to the reel body can be improved. Further, the cage, which is a component, includes a first cage having a holding portion for holding a biasing spring that biases a plurality of rolling members, and a second cage attached to the first cage so as to axially sandwich an outer ring. The first cage and the outer ring are each formed with a stopper that projects radially outward, and these are in a state where the movement in the rotational direction is restricted by the restricting portion of the reel body. For this reason, it is possible to prevent the cage from fluctuating in the axial direction or shifting with respect to the outer ring, and it is possible to obtain a stable operation as a one-way clutch. Further, since it is not necessary to screw-fasten to the reel body, there is no need to adopt a structure for ensuring strength such as forming a screw hole on the reel body side, and the reel body can be made smaller and lighter.

[0010] Further, the present invention is characterized by providing a one-way clutch incorporated in a fishing reel and obtaining the above-described action.

Effects of the Invention

[0011] According to the fishing reel according to the present invention, it is possible to obtain a fishing reel in which the reel body can be made smaller and lighter, assembly is easy, and a stable clutch operation can be obtained, and a one-way clutch that can obtain such an action can be obtained.

Brief Description of the Drawings

[0012]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Embodiments for Carrying Out the Invention

[0013] FIGS. 1 and 2 are views showing an embodiment of a spinning reel which is a fishing reel according to the present invention. FIG. 1 is an exploded perspective view, and FIG. 2 is a view showing the internal configuration. Hereinafter, when explaining the one-way clutch, the direction on the spool side is defined as the front (upper side), the direction on the reel body side is defined as the rear (lower side), the axial direction X is defined as the axial center direction of the spool shaft, and the center O is defined as the axial center position of the spool shaft (see FIG. 2).

[0014] First, an outline of the overall configuration of the spinning reel of the present embodiment will be described. On a reel body 2 of a spinning reel (hereinafter referred to as a reel) 1, a reel foot 2A to be attached to a fishing rod is integrally formed. In front of the reel body 2, a rotatably supported rotor 3 and a known spool (not shown) supported so as to be movable back and forth in synchronization with the rotational movement of the rotor 3 are disposed.

[0015] The rotor 3 is provided with a pair of arm portions 3a that rotate around the spool. At the front end portion of each of the arm portions 3a, a veil support member 3b to which the base end portion of the veil 5 is attached is rotatably supported between the fishing line winding position and the fishing line unwinding position. In this case, one base end portion of the veil 5 is attached to a fishing line guide portion (line roller) 6 integrally provided on the veil support member 3b.

[0016] Within the reel body 2, a handle shaft is rotatably supported via a bearing, and a handle is attached to the protruding end portion thereof. The handle shaft is provided with a driving force transmission mechanism 10 that, when the handle is rotationally operated, transmits the driving force to the rotor 3 to rotationally drive the rotor.

[0017] As is well known, the driving force transmission mechanism 10 includes a driving gear integrally rotatably attached to the handle shaft and a pinion 11 having a pinion tooth portion meshing with the driving gear. The pinion 11 extends in the front-rear direction orthogonal to the handle shaft and functions as a rotation driving shaft in which a cavity portion 11a extending in the axial direction is formed inside. In this case, a spool shaft that engages with a known oscillating mechanism for moving the spool back and forth when the handle is rotationally operated is inserted into the cavity portion 11a, and the spool is attached to the tip thereof.

[0018] The pinion 11 is rotatably supported by the reel body 1. Further, the pinion 11 extends toward the spool side, and the rotor 3 is integrally rotatably attached to the tip end portion of the pinion 11. The rotor 3 is externally fitted with the through hole of the boss portion 3A formed in the central portion to the tip end of the pinion 11 and is fixed by tightening a nut (not shown). Further, a one-way clutch 20 that constitutes an anti-reverse mechanism is disposed on the pinion 11.

[0019] With the above-described configuration, when the handle is wound up, the rotor 3 is rotationally driven via the drive force transmission mechanism 10, and the spool is reciprocated in the front-rear direction via the oscillation mechanism and the spool shaft. Therefore, the fishing line is evenly wound around the spool via the fishing line guide portion 6 of the rotationally driven rotor 3.

[0020] Next, the one-way clutch 20 of the present embodiment will be described with reference to FIGS. 3 to 9 in addition to FIGS. 1 and 2. FIGS. 3 to 9 show a one-way clutch having an assembly structure incorporated in the spinning reel shown in FIG. 1. FIG. 3 is a perspective view, FIG. 4 is a plan view with an anticorrosion plate installed, FIG. 5 is a perspective view of the one-way clutch shown in FIG. 4, FIG. 6 is a side view of the one-way latch shown in FIG. 4, FIG. 7 is a cross-sectional view taken along line A-A of FIG. 6, FIG. 8 is a cross-sectional view taken along line B-B of FIG. 6, and FIG. 9 is a perspective view showing an exemplary form of the anticorrosion plate disposed in the one-way clutch.

[0021] As shown in FIG. 1, on the spool side of the reel body 2, a base portion 2B formed in a substantially disc shape is disposed, and a regulating portion for regulating the movement in the rotational direction of the one-way clutch 20 is provided on the surface portion of the base portion 2B. The regulating portion of the present embodiment is configured as a circumferential wall (a cylindrical portion protruding in the axial direction) 2C provided on the reel body 2. The pinion 11 is rotatably supported through the central portion of the circumferential wall 2C, and the one-way clutch 20 is disposed at an intermediate portion thereof. In this case, notch portions 2c are formed at 180° intervals in the circumferential wall 2C so that a protruding portion (a stopper) of the one-way clutch 20, which will be described later, is disposed.

[0022] The pinion 11 is rotationally driven via a drive gear by a rotational operation of the steering wheel. Further, the one-way clutch 20 is disposed at an intermediate portion of the pinion 11 and has a function of allowing rotation of the pinion 11 in the fishing line winding direction and preventing reverse rotation, and includes an inner ring 21, an outer ring 27, and a retainer 23 having a holding portion 23a that holds a biasing spring 24 that biases a plurality of rolling members 25. The retainer 23 includes a first retainer 23A having the holding portion 23a and a second retainer 23B attached to the first retainer 23A so as to axially sandwich the outer ring 27. And these constituent members are assembled (an assembly structure in which a plurality of constituent members are integrated; also referred to as ASSY), and can be handled integrally. By configuring the retainer 23 in this way with a plurality of members (the first retainer 23A and the second retainer 23B), it is possible to suppress the constituent members such as the outer ring from coming off in the axial direction, making it easier to assemble.

[0023] The inner ring 21 is non-rotatable relative to the pinion 11 and has a function as a drive shaft that rotates integrally with the pinion 11. Specifically, the cross section of the pinion 11 has a shape in which a non-circular portion is partially formed, and by fitting the non-circular portion of the inner ring 21 into this portion, the inner ring 21 can rotate integrally with the pinion 11 (see FIG. 5).

[0024] The retainer 23 is disposed radially outward of the inner ring 21 and is configured by integrating the first retainer 23A and the second retainer 23B as described above. In the present embodiment, the first retainer 23A is disposed on the lower side and the second retainer 23B is disposed on the upper side, and the first retainer 23A and the second retainer 23B are integrally assembled and assembled so as to sandwich the outer ring 27. In this case, the first retainer 23A may be defined as the upper side and the second retainer 23B as the lower side.

[0025] Note that the connection structure (engagement fixing portion) for integrating the first retainer 23A and the second retainer 23B is not particularly limited. For example, the first retainer 23A may be formed with displaceable convex portions protruding in the axial direction at predetermined intervals in the circumferential direction, and concave portions into which the convex portions fit may be formed at corresponding positions on the second retainer 23B. In this configuration, the second retainer 23B can be axially moved so as to sandwich the outer ring 27 and the convex portions can be engaged with the concave portions, thereby integrating the first retainer 23A and the second retainer 23B. Alternatively, the first retainer 23A and the second retainer 23B may be integrated by welding, screwing, or the like.

[0026] The first retainer 23A is formed with the holding portions 23a arranged at regular intervals in the circumferential direction. Each holding portion 23a is formed with a recess 23b that opens in the circumferential direction (as shown in FIG. 7, it opens in the counterclockwise direction), and a biasing spring 24 is held in each recess 23b. A rolling member 25 is disposed between each pair of holding portions, and each rolling member 25 is biased in the circumferential direction (in the counterclockwise direction; reverse rotation direction in FIG. 7) by the biasing spring 24.

[0027] The outer ring 27 is disposed radially outward of each rolling member 25 and is formed in a ring shape (a substantially ring shape is also acceptable) (see FIG. 7). On the inner peripheral surface of the outer ring 27, a wedge region 27a that prevents the rotation of each rolling member 25 and a free region 27b that allows the rolling member 25 to rotate freely are continuously formed. Each rolling member 25 held by the retainer 23 (first retainer 23A) is constantly biased toward the wedge region side by the biasing spring 24. Also, the outer peripheral surface 27d of the outer ring 27 is formed in a circular shape (including a substantially circular shape).

[0028] A part of the outer ring 27 formed in the approximate ring shape is provided with a protruding portion 27c that protrudes radially outward. This protruding portion has a function as a stop for regulating the rotation of the outer ring 27 (hereinafter also referred to as a stop 27c). The stop 27c is integrally formed so as to protrude radially outward from the outer peripheral surface 27d of the outer ring 27, and one or more are provided. In this case, since a large torque is applied to the outer ring and stress may concentrate and cause bias at one location, it is preferable to form two or more at equal intervals. In the present embodiment, two are provided so as to face each other with the axis (center O) interposed therebetween at 180° intervals. Each stop 27c has a constant width in the circumferential direction, and both sides 27e, 27f in the circumferential direction have a function of preventing rotation.

[0029] As shown in FIG. 8, the first cage 23A has a shape similar to that of the outer ring 27. Preferably, a protruding portion 23c having a substantially same shape is integrally formed at the same position (the position overlapping in the axial direction) as the stop 27c of the outer ring 27. Similar to the outer ring, this protruding portion 23c is provided at two locations so as to face each other with the axis (center O) interposed therebetween at 180° intervals, and has a function as a stop (hereinafter also referred to as a stop 23c). The stop 23c has a constant width in the circumferential direction, and both sides 23e, 23f in the circumferential direction have a function of preventing rotation.

[0030] A notch 2c that penetrates the circumferential wall 2C in the radial direction is formed in the circumferential wall 2C protruding from the reel body 2. The notch 2c is formed to such an extent that the stops 23c of the first cage 23A and the stop 27c of the outer ring 27 described above can be disposed. By fitting each of the stops 23c, 27c into the notch 2c and disposing the second cage 23B from its surface, the one-way clutch is fixed to prevent rotation and the axial detachment of the outer ring is regulated (movement in the circumferential direction and the axial direction is regulated).

[0031] Note that the notch 2c may be formed at one or more positions on the circumferential wall 2C. In this embodiment, the notch 2c is formed at two positions (two positions symmetric with respect to the center O at 180° intervals) at equal intervals in the circumferential direction so as to have the same number as the mating portions formed on the first cage 23A and the outer ring 27. Thus, for the notch 2c, by providing two or more notches in the same number as the mating portions formed on the first cage 23A and the outer ring 27, the one-way clutch can be stably held without rattling.

[0032] The outer peripheral surfaces of the mating portions 23c and 27c are radially exposed at the notch 2c portion of the circumferential wall 2C, and it is possible to touch and pick them with a finger. Therefore, each exposed mating portion makes it easier to integrally pick up the first cage 23A and the outer ring 27, and the workability of attaching and detaching the one-way clutch 20 can be improved. In this case, it is preferable to form a chamfer 2d on the opening side (upper end side) of the notch 2c so as to gradually widen as it moves upward (see Fig. 6). By forming such a chamfer 2d, it becomes easier to perform the attaching and detaching operations of the first cage 23A and the outer ring 27.

[0033] In the above-described configuration, it is preferable that the mating portion 23c of the first cage 23A and the notch 2c are configured to be in contact without a gap (contact in a state without play). That is, if there is play between the two, when the inner ring 21 rotates in the fishing line winding direction, the first cage 23A holding the biasing spring 24 is also subjected to a following rotation action by the inner ring, and the biasing spring 24 will move in the circumferential direction (in Fig. 7, the biasing spring 24 follows the first cage in the clockwise direction by the amount of play). When a load is applied to the reverse rotation side in this state, the time for moving each rolling member 25 to the wedge region 27a of the outer ring 27 is extended by the amount of the play, so that the time until braking is increased and rapid locking performance cannot be exhibited. On the other hand, by making the mating portion 23c of the first cage 23A and the notch 2c in a fitting state without a gap as shown in Fig. 8, the fixed position of the biasing spring 24 can be maintained, and the time to operation due to play is not required, and rapid locking performance can be exhibited during reverse rotation.

[0034] Note that, between the outer peripheral surface 23g of the first cage 23A and the circumferential wall 2C, a gap S may be formed to such an extent that the tolerance of the first cage 23A can be absorbed.

[0035] Also, for the outer ring 27, as shown in Fig. 7, it is preferably configured to have a slight play S1 between the mating portion 27c and the notch 2c, and between the outer peripheral surface of the outer ring 27 and the inner peripheral surface of the circumferential wall 2C. By configuring in this way, even if there is some tolerance between the outer ring 27 and the circumferential wall 2C and the concentricity is deviated with respect to the center О, the deviation can be absorbed, thereby ensuring smooth rotation performance, preventing rattling, and further enabling easy attachment and detachment operations. Further, by configuring the outer ring 27 to be fitted within the circumferential wall 2C so that there is a non-contact state (play S1 occurs) between the two, when the inner ring 21 is centered, a non-contact state can be maintained between the outer ring 27 and the circumferential wall 2C so that conduction does not occur between the two members.

[0036] In the above-described configuration, it is preferable to provide a positioning portion between the outer ring 27 and the second cage 23B for positioning the outer ring 27 and the second cage 23B. By providing such a positioning portion, as described above, when the first cage 23A and the second cage 23B are integrated by a connecting structure (engaging and fixing portion), the positional relationship between the two is maintained, and it becomes easier to incorporate the one-way clutch in which the above-described constituent members are assembled into the reel body. That is, since the positioning is performed with the stoppers 23c of the first cage 23A and the stopper 27c of the outer ring 27 aligned, handling becomes easy and it becomes easy to assemble into the notch 2c of the circumferential wall 2C.

[0037] The positioning portion may be any portion that fixes the position between the outer ring 27 and the cage 23. For example, the positioning portion of the present embodiment includes a recess 27c2 formed on the outer peripheral surface 27c1 of the stopper 27c of the outer ring 27 and a protrusion 23c2 formed on the second cage 23B and fitted into the recess 27c2. In this case, a pair of protruding pieces 23m protruding in the radial direction are formed on the second cage 23B at a position overlapping the stoppers 23c and 27c described above, and the protrusion 23c2 is formed so as to hang down on the outer peripheral surface 23n of the protruding piece 23m.

[0038] By disposing the above-described positioning portion, it becomes possible to easily align the protruding pieces 23m of the second cage 23B with respect to the stoppers 23c of the first cage 23A and the stopper 27c of the outer ring 27 that protrude in the radial direction, respectively, by overlapping the first cage 23A, the outer ring 27, and the second cage 23B formed in a disc shape. Therefore, by covering the outer ring 27 with the second cage 23B along the axial direction, the protrusion 23c2 is fitted into the recess 27c2 for positioning, and assembly can be easily performed.

[0039] Note that by configuring the diameter of the circumferential wall 2C (the diameter of the outer peripheral surface of the circumferential wall) to be the same as the outermost diameter of the outer ring 27 (the diameter of the outer peripheral surface 27c1 on the exposed side of the stopper 27c), it is possible to reduce the size of the one-way clutch.

[0040] Furthermore, in the present embodiment, an anticorrosion plate (also referred to as an anticorrosion plate; anticorrosion member) 28 formed in a ring shape is axially stacked and mounted on the second retainer 23B (see FIG. 9).

[0041] Generally, the outer ring of the one-way clutch is disposed so as to contact the cylindrical portion formed on the reel body. Usually, since the outer ring has a structure in which a corrosion-resistant coating such as nickel plating is formed on SUS, when the reel body side is made of ADC12 subjected to anodizing treatment or a non-metallic material such as a high-strength resin material, it is difficult for corrosion problems to occur between the two. However, when the reel body is formed of a magnesium-based metal material, the potential difference between the two increases and corrosion (galvanic corrosion) is likely to occur.

[0042] In the above-described configuration, since the contact portion between the outer ring 27 and the circumferential wall 2C of the reel body 2 is the notch portion 2c and both circumferential sides 27e and 27f of the abutment 27c that abuts thereon, this portion may be insulated. The anticorrosion plate 28 of the present embodiment is configured to be detachable from the axial direction so as to be stacked on the one-way clutch 20, and is formed in a plate shape and a ring shape so that the reel body does not increase in size.

[0043] The anticorrosion plate 28 can be configured as shown in FIG. 9, for example. The anticorrosion plate 28 shown in FIG. 9 has a ring-shaped main body 28a disposed radially outward of the second retainer 23B and placed on the surface portion of the second retainer 23B. Protrusion pieces 28b protruding radially outward are formed on both sides in the diameter direction of the main body 28a, and a pair of leg portions 28c hanging downward in the axial direction are provided on both sides of each protrusion piece 28b.

[0044] The tab 28b is formed in substantially the same shape as the positioning portion 27c of the outer ring 27, and the pair of leg portions 28c are configured to be interposed (inserted) between the circumferential sides 27e and 27f of the positioning portion 27c and the notch portion 2c when the main body 28a is placed on the surface portion of the outer ring 27 from the axial direction (see FIGS. 4 to 7). In this case, if a slight clearance is provided between the outer ring 27 at the positioning portion 27c and the notch portion 2c, in the configuration where the anticorrosion plate 28 is installed, a similar clearance may be set to occur between the interposed leg portion 28c and the notch portion 2c.

[0045] The anticorrosion plate 28 may be composed of an insulating material that is interposed between the two members (with the pair of leg portions 28c interposed) so as not to conduct electricity. For example, when the reel body (cylindrical portion) is made of magnesium, it is preferable to use a material with a small potential difference from the outer ring, for example, an aluminum-based material (anodized aluminum alloy). Such a material can be easily created by press forming or the like and is composed of non-magnetic material, so even if the following magnetic seal mechanism is arranged, it will not be attracted by the magnet and will not conduct electricity by forming an anodized layer. Furthermore, since the shape is stable in press forming, it is easy to incorporate and remove, and does not affect the rotational performance.

[0046] Regarding the constituent material of the anticorrosion plate (anticorrosion member), an appropriate material may be selected according to the materials of the outer ring 27 and the reel body, and it is also possible to be composed of other metal materials, resin materials, etc. Also, regarding the anticorrosion plate, as long as the member having an anticorrosion effect is inserted between the one-way clutch and the reel body, the shape can be appropriately deformed. Note that the anticorrosion plate 28 may not be arranged.

[0047] According to the one-way clutch 20 having the above-described configuration and the fishing reel incorporating the same, the rotation (reverse rotation) of the handle (rotor 3) in the fishing line payout direction is prevented. That is, when the handle is rotated in the fishing line winding direction to rotationally drive the pinion (rotationally driven in the clockwise direction in Fig. 7), the inner ring 21 also rotates in the same direction together with the pinion. At this time, since the rolling member 25 held by the cage 23 (the first cage 23A) moves to the free region 27b of the outer ring 27, the rotational force of the inner ring 21 is not transmitted to the outer ring 27, and the rotor 3 can rotate smoothly together with the pinion 11.

[0048] On the contrary, when the inner ring 21 tries to rotate in the reverse direction together with the pinion (the rotor 3 rotates in the fishing line unwinding direction), the rolling member 25 held by the cage 23 (the first cage 23A) rolls in the counterclockwise direction and is positioned in the wedge region 27a of the outer ring 27 by the biasing spring 24, so that the rotational force of the inner ring 21 is transmitted to the outer ring 27. In this case, since the rotation of the outer ring 27 is restricted by the stopper 27c, this serves as a stopper to prevent the reverse rotation of the pinion and the rotor 3.

[0049] Further, the one-way clutch 20 described above is configured such that the stoppers 23c and 27c are arranged in the notch 2c formed in the circumferential wall 2C of the reel body 2. Since assembly to the reel body by screws is not required, there is no need to provide the seating surface of the screw outward in the radial direction of the outer ring or to improve the strength for the seating surface. As a result, handling is easy, and it is possible to achieve downsizing and weight reduction of the entire reel.

[0050] In particular, the one-way clutch 20 is pre-assembled with the first cage 23A that biases and holds the rolling member 25, the outer ring 27, and the second cage 23B. Since the outer ring 27 is prevented from coming off by both cages 23A and 23B, while achieving downsizing and weight reduction, handling becomes easy, maintenance performance is improved, and the assemblability to the reel body is improved.

[0051] Further, stoppers 23c and 27c are formed on the first retainer 23A and the outer ring 27 respectively, and these are arranged in the notch 2c formed in the circumferential wall 2C of the reel body 2 (preferably arranged at two or more positions), so that the load applied in the reverse rotation direction can be effectively received. In this case, a protruding piece 23m is formed on the second retainer 23B, and it is configured to overlap axially with the stoppers 23c and 27c (see Fig. 3). As a result, each component can be pinched with fingers at once for easy attachment and detachment operation, improving the handling property as an assembly structure and also improving the maintainability. That is, since the stoppers 23c, 27c and the protruding piece 23m are provided symmetrically in the diameter direction, they can be easily pinched, and the attachment and detachment operation of the one-way clutch can be easily performed.

[0052] Also, by providing a gap between the outer ring 27 and the inner peripheral surface and the notch 2c of the circumferential wall 2C of the reel body, smooth rotation can be ensured even if core deviation or the like occurs, and a stable reverse rotation prevention effect can be exerted. In this case, by fitting the first retainer 23A into the reel body (notch 2c) without a gap, the rotation of the retainer 23 accompanying the fishing line winding direction of the inner ring 21 (the rotation of the biasing spring 24) is restricted. In addition to smooth rotation, the time until braking during reverse rotation is reduced, and a reverse rotation prevention function with stable operability can be exerted.

[0053] After incorporating the one-way clutch 20 described above into the reel body, as shown in Figs. 1 and 2, a magnetic seal mechanism 50 may be provided to enhance the waterproof and dustproof effects on the one-way clutch 20.

[0054] As is well known, this magnetic seal mechanism 50 includes ring-shaped magnetic plates (pole plates) 51, 52 arranged with a minute gap interposed between them and the outer peripheral surface of the drive shaft (inner ring 21), and a ring-shaped magnet 53 sandwiched between the magnetic plates, and is configured to fill the gap between the drive shaft and the magnetic plates with magnetic fluid.

[0055] Further, in the present embodiment, a waterproof cap 60 is provided on the reel body so as to wrap the circumferential wall 2C and the one-way clutch 20. The waterproof cap 60 has a shape including a cylindrical portion 61 surrounding the one-way clutch 20 and a cover portion 62 closing the opening on the spool side, and the magnetic plate 51 of the magnetic seal mechanism 50 is adhered to the inner surface of the cover portion 62.

[0056] In this way, by disposing the magnetic seal mechanism 50 on the spool side of the one-way clutch 20 and providing the waterproof cap 60 so as to wrap the circumferential wall 2C and the one-way clutch 20, it is possible to prevent foreign matters such as moisture and dust from entering, and improve durability.

[0057] FIG. 10 shows a second embodiment of the one-way clutch, and is a diagram showing a fitting state between the first cage 35A and the restricting portion (notch 2c) on the reel body side. In the embodiments described below, the same reference numerals are given to the constituent parts similar to those in the above-described embodiment, and detailed descriptions thereof are omitted. In the above-described embodiment, the positioning portion is provided between the outer ring 27 and the second cage 23B. Specifically, as shown in FIGS. 5 to 7, a recess 27c2 is formed in the outer peripheral surface 27c1 of the abutment 27c of the outer ring 27, and the second cage 23B is formed with a protrusion 23c2 that fits into the recess 27c2. However, the protrusion may be formed on the first cage 23A. That is, a protrusion 23c3 having a similar positioning function may be integrally formed on the outer peripheral surface 23p of each abutment 23c of the first cage 23A so as to face upward in the axial direction.

[0058] By forming the protrusion constituting the positioning portion on the first cage 23A in this way, the second cage 23B can be substituted for a structure without a protrusion, so that the degree of freedom in design can be improved.

[0059] FIG. 11 shows a third embodiment of the one-way clutch, and is a perspective view showing the configuration of the positioning portion disposed between the first cage and the outer ring. The positioning portion described above is constituted by a recess 27c2 formed on the outer peripheral surface of the alignment portion of the outer ring 27 and protrusions 23c3 and 23c2 formed on the first cage or the second cage. For example, it may be constituted by a recess 27k formed on the inner peripheral surface of the outer ring 27 and a radially protruding portion 23k formed on the first cage 23A and fitted into the recess 27k.

[0060] In this way, by positioning on the inner side in the radial direction of the outer ring 27, the positioning portion is not exposed to the outside in the radial direction, and it is possible to prevent the protrusions 23c2 and 23c3 in the above-described embodiment from being damaged or injured. In this case, the positions, shapes, and numbers of the recess 27k and the radially protruding portion 23k fitted into the recess are not limited, but by forming them in the portion of the alignment portion 27c protruding in the radial direction, it is possible to ensure strength. Further, such a recess 27k can be easily formed by punching together with the wedge region 27a and the free region 27b.

[0061] FIG. 12 is an exploded perspective view showing another configuration example of the fishing reel according to the present invention, and FIG. 13 is a perspective view showing the fixed state of the one-way clutch shown in FIG. 12.

[0062] The one-way clutch 20 of the present embodiment has an assembly structure similar to that of the above-described embodiment, and alignments 23c and 27c are formed on the first cage 23A and the outer ring 27 at intervals of 180°. Further, an abutting portion (restricting portion) 2E is formed on the reel body 2, against which the side surfaces of the alignments 23c and 27c abut to restrict the rotation of the outer ring. In this case, the abutting portion 2E does not need to be configured in a cylindrical shape as in the first embodiment, and any structure (for example, a boss, a rib, etc.) that protrudes in the axial direction and abuts against the side surface of the alignment to restrict rotation may be used. Therefore, if the alignment is provided at one location on the first cage and the outer ring, it may be installed so as to abut at two points on both circumferential sides of the alignment so as to restrict the rotation in both directions.

[0063] Note that since the stoppers 23c and 27c of the present embodiment are formed at two locations at 180° intervals, contact portions 2E are provided on both sides in the circumferential direction of each stopper, and the configuration is such that they contact at two points (the side surfaces 2E´ of the contact portions 2E) on both sides in the circumferential direction of each stopper.

[0064] According to such a configuration, similar to the above-described embodiment, corrosion of the reel body can be prevented by the anticorrosion plate 28, and the one-way clutch 20 can be fixed against rotation without providing the circumferential wall 2C having the notch 2c, making it possible to achieve further weight reduction and downsizing. Also, in such a configuration, since a space is created around the contact portion, the attachment / detachment operation of the one-way clutch 20 can be easily performed.

[0065] Furthermore, such a contact portion 2E is preferably formed to contact at two points radially inside the outermost diameter position of the stoppers 23c and 27c. In such a configuration, the contact portion 2E can be made thinner in thickness, making it possible to further reduce the weight.

[0066] As described above, the embodiments of the present invention have been explained, but the present invention is not limited to the above-described embodiments and can be variously modified. Regarding the stoppers 23c and 27c having the above-described configuration, their shapes can be appropriately modified. For example, the surface on the exposed side of the stopper may or may not protrude radially from the circumferential wall 2C within the notch 2c of the circumferential wall 2C. Also, in the configuration shown in FIG. 12, the contact portions 2E are configured to contact on both sides in the circumferential direction of the stopper, but a recess may be formed along the axial direction at the central portion of the stopper, and the contact portion may be formed to fit into this recess. Alternatively, contact portions extending axially in a U-shaped cross-section may be provided on the reel body so as to contact both sides of the stopper.

[0067] In the above-described structure, the stopper 23c of the first cage 23A and the stopper 27c of the outer ring 27 are configured to overlap at the same position, but a configuration in which the stoppers are overlapped at positions shifted in the circumferential direction may also be acceptable.

[0068] In the one-way clutch of the above-described embodiment, the cage 23 is fixed to prevent reverse rotation of the rotor. However, an operating member protruding outside the reel body may be provided, and the cage may be rotated by operating the operating member to position the rolling member in the free region, allowing reverse rotation of the rotor. Further, a regulating plate (not shown) may be separately disposed adjacent to the one-way clutch 20 so as to regulate the axial movement of the one-way clutch 20.

[0069] Also, in this embodiment, a spinning reel is exemplified as the fishing reel. However, the one-way clutch 20 assembled as described above can also be applied to other reels (such as a double-bearing type reel) into which it can be incorporated.

Description of Reference Numerals

[0070] 1 Spinning reel (fishing reel) 2 Reel body 2C Circumferential wall (regulating portion) 2c Notch 3 Rotor 20 One-way clutch 23 Cage 23A First cage 23B Second cage 23c Index 27 Outer ring 27c Index

Claims

1. In a fishing reel incorporating a one-way clutch that allows rotation of a rotary drive shaft supported within the reel body in one direction and prevents rotation in the other direction, the one-way clutch has an assembly structure including an inner ring, an outer ring, a first retainer that holds a biasing spring for biasing a plurality of rolling members, and a second retainer attached to the first retainer so as to axially sandwich the outer ring, the reel body is provided with a restricting portion that is fixed so as to restrict movement of the one-way clutch in the rotational direction, the first retainer and the outer ring are each formed with a stopper that projects radially outward, the movement of the one-way clutch in the rotational direction is restricted by the restricting portion of the reel body and the respective stoppers, A fishing reel characterized by the above.

2. The restricting portion is a notch formed along the circumferential direction in a circumferential wall provided on the reel body, and the stopper is disposed in the notch, The fishing reel according to claim 1, characterized by the above.

3. The fishing reel according to claim 2, characterized in that two or more notches are provided at equal intervals in the circumferential direction of the circumferential wall, and the same number of stoppers as the notches are provided.

4. The outer ring has a play with respect to the restricting portion, The fishing reel according to claim 1 or 2, characterized by the above.

5. The first retainer is in contact with the restricting portion without a gap, The fishing reel according to claim 4, characterized by the above.

6. A positioning portion for positioning between the outer ring and the first retainer or the second retainer is provided between the outer ring and the first retainer or the second retainer, The fishing reel according to claim 1, characterized by the above.

7. The positioning portion has a recess formed on an outer peripheral surface of the stopper of the outer ring and a protrusion formed on the first retainer or the second retainer and fitted into the recess, The fishing reel according to claim 6, characterized by the above.

8. The positioning portion has a recess formed on an inner peripheral surface of the outer ring and a radially projecting portion formed on the first retainer or the second retainer and fitted into the recess, The fishing reel according to claim 6, characterized by the above.

9. An anticorrosion plate having legs interposed between the stopper and the notch is disposed axially overlapping the one-way clutch, The fishing reel according to claim 2, characterized by the above.

10. In a one-way clutch installed to allow rotation in one direction and prevent rotation in the other direction of a rotary drive shaft supported within a reel body of a fishing reel, the one-way clutch has an assembly structure including an inner ring, an outer ring, a first retainer that holds a biasing spring for biasing a plurality of rolling members, and a second retainer attached to the first retainer so as to axially sandwich the outer ring. The first retainer and the outer ring are each formed such that stoppers protruding radially outward overlap axially. A one-way clutch characterized by the above.

11. A positioning portion for positioning between the outer ring and the first retainer or the second retainer is provided between the outer ring and the first retainer or the second retainer. The one-way clutch according to claim 10, characterized by the above.

12. The positioning portion has a recess formed on an outer peripheral surface of the stopper of the outer ring and a protrusion formed on the first retainer or the second retainer and fitted into the recess. The one-way clutch according to claim 11, characterized by the above.

13. The positioning portion has a recess formed on an inner peripheral surface of the outer ring and a radially protruding portion formed on the first retainer or the second retainer and fitted into the recess. The one-way clutch according to claim 11, characterized by the above.

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