One-way clutch and fishing reel

Abstract

To provide a one-way clutch that can make a reel body compact and lightweight, and facilitates handling of structural members.SOLUTION: A one-way clutch 20 according to the present invention comprises an inner ring, an outer ring 27, and a retainer 23 comprising a retaining part 23a for retaining a biasing spring for biasing a plurality of rolling members 25. The retainer 23 comprises a first retainer 23A provided with the retaining part 23a, and a second retainer attached to the first retainer so as to clamp the outer ring in an axial direction. The first retainer 23A and the second retainer 23B are integrated by an engagement fixing part 30 provided inside an inner peripheral outline of the outer ring 27 in a radial direction.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a one-way clutch for preventing reverse rotation of a drive shaft and a fishing reel incorporating such 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 reverse when an attempt is made to reverse-rotate the handle. 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 retainer disposed radially outward of the inner ring and holding a plurality of rolling members, and an outer ring disposed radially outward of the retainer and non-rotatably fixed to the reel body.

[0003] For example, as disclosed in Patent Document 1, the one-way clutch has an assembly structure in which the constituent members are integrated, and it is known that the assembly to the reel body is made by screwing (a screw seat is provided on the outside of the outer ring and fixed to the reel body). Further, regarding the retainer, in order to prevent the constituent members such as the rolling members, the biasing spring, and the outer ring from coming off axially, a plurality of structures (a first retainer, a second retainer) are used and integrated.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] As described above, in a one-way clutch incorporated in a conventional fishing reel, the cage is made up of a plurality of structures, but sufficient consideration has not been given to the configuration of integrating the two. Specifically, since the engagement between the first cage and the second cage is performed on the outer side in the radial direction of the outer ring, the one-way clutch becomes large in the radial direction, and there is a problem that the reel body cannot be miniaturized. Also, at that time, it is structured to be easily separable, such as by light press-fitting. As a result, when manufacturing, or when assembling into the reel body, or during maintenance, careful work is required to prevent scattering of components such as parts falling off. Furthermore, since such a one-way clutch is fixed by screwing on the outer side in the radial direction with respect to the reel body, the reel body cannot be made smaller and lighter.

[0006] The present invention has been made paying attention to the above problems, and an object thereof is to provide a one-way clutch that can reduce the size and weight of the reel body and is easy to handle components, and a fishing reel incorporating such a one-way clutch.

Means for Solving the Problems

[0007] In order to achieve the above object, the one-way clutch according to the present invention includes an inner ring, an outer ring, and a cage that holds a biasing spring that biases a plurality of rolling members, and the cage includes a first cage provided with the holding portion, and a second cage attached to the first cage so as to sandwich the outer ring in the axial direction. The first cage and the second cage are integrated by an engagement fixing portion provided radially inside the inner peripheral contour of the outer ring.

[0008] According to the one-way clutch described above, a cage as a component member 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 sandwich the outer ring in the axial direction. The first cage and the second cage are integrated by an engagement fixing portion provided radially inward of the inner peripheral contour of the outer ring. That is, since the engagement fixing portion for integrating the first cage and the second cage does not project radially outward with respect to the outer ring, it is possible to reduce the size and weight of the one-way clutch.

[0009] Further, in order to achieve the above object, the present invention provides a fishing reel incorporating the one-way clutch having the above-described configuration. By incorporating a one-way clutch that is reduced in size and weight, it is possible to reduce the size and weight of the reel body as well.

Effects of the Invention

[0010] According to the present invention, it is possible to reduce the size and weight of the reel body, obtain a one-way clutch in which component members are easy to handle, and by incorporating such a one-way clutch into the reel body, a fishing reel that is reduced in size and weight can be obtained.

Brief Description of the Drawings

[0011]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Embodiments for Carrying Out the Invention

[0012] Figs. 1 and 2 are diagrams 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 diagram showing the internal structure. In the following description of 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 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).

[0013] First, an overview of the overall structure of the spinning reel of the present embodiment will be described. A reel leg 2A for attaching to a fishing rod is integrally formed on the reel body 2 of the spinning reel (hereinafter referred to as the reel) 1. In front of the reel body 2, a rotatably supported rotor 3 and a known spool (not shown) supported to be movable back and forth in synchronization with the rotational movement of the rotor 3 are arranged.

[0014] The rotor 3 includes a pair of arm portions 3a that rotate around the spool. At the front end portion of each arm portion 3a, a bail support member 3b to which the base end portion of the bail 5 is attached is rotatably supported between the fishing line winding position and the fishing line releasing position. In this case, one base end portion of the bail 5 is attached to a fishing line guiding portion (line roller) 6 provided integrally with the bail support member 3b.

[0015] A handle shaft is rotatably supported in the reel body 2 via a bearing, and a handle is attached to the protruding end portion thereof. A driving force transmission mechanism 10 for transmitting the driving force to the rotor 3 to rotationally drive the rotor when the handle is rotationally operated is provided on the handle shaft.

[0016] As is well known, the driving force transmission mechanism 10 includes a drive gear integrally rotatably mounted on the handle shaft and a pinion 11 having a pinion tooth portion meshing with the drive gear. The pinion 11 extends in the front-rear direction orthogonal to the handle shaft and functions as a rotary drive shaft having a cavity portion 11a extending in the axial direction formed therein. In this case, a spool shaft that engages with a known oscillating mechanism for moving the spool back and forth when the handle is rotated is inserted into the cavity portion 11a, and the spool is mounted at the tip thereof.

[0017] 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 of the pinion 11. The rotor 3 is fixed by fitting the through hole of the boss portion 3A formed in the central portion onto the tip of the pinion 11 and tightening a nut (not shown). Also, a one-way clutch 20 constituting a reverse prevention mechanism is disposed on the pinion 11.

[0018] With the above-described configuration, when the handle is wound up, the rotor 3 is rotationally driven via the driving force transmission mechanism 10, and the spool is reciprocated in the front-rear direction via the oscillating 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.

[0019] Next, the one-way clutch 20 of the present embodiment will be described with reference to FIGS. 3 to 8 in addition to FIGS. 1 and 2. FIGS. 3 to 8 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 side view, FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4, FIG. 6 is a cross-sectional view taken along line B-B of FIG. 4, FIG. 7 is a plan view of the one-way latch shown in FIG. 3, and FIG. 8(a) is a view showing the configuration of the holding portion of the holder (first holder) of the one-way clutch, and FIG. 8(b) is a cross-sectional view taken along line C-C of FIG. (a).

[0020] As shown in FIG. 1, a base portion 2B formed in a substantially disk shape is disposed on the spool side of the reel body 2, and a restricting portion for restricting the movement of the one-way clutch 20 in the rotational direction is provided on the surface portion of the base portion 2B. The restricting portion of the present embodiment is configured as a circumferential wall (cylindrical portion protruding in the axial direction) 2C provided on the reel body 2. The pinion 11 is rotatably supported through the center portion of the circumferential wall 2C, and the one-way clutch 20 is disposed at an intermediate portion thereof. In this case, notches 2c are formed at 180° intervals in the circumferential wall 2C so that protruding portions (degrees) of the one-way clutch 20 described later are arranged.

[0021] The pinion 11 is rotationally driven via a drive gear by a rotational operation of the handle. 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 sandwich the outer ring 27 in the axial direction. 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 achieve assembly.

[0022] The inner ring 21 is non-rotatable with respect 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.

[0023] 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. Note that the first retainer 23A may be defined as the upper side and the second retainer 23B as the lower side.

[0024] The above-described first retainer 23A and second retainer 23B are integrated by an engagement fixing portion 30 described later. The engagement fixing portion 30 is disposed inside the inner circumferential contour of the outer ring 27 in which a wedge region 27a and a free region 27b are formed, and the first retainer 23A and the second retainer 23B are engaged and fixed at this inner position.

[0025] 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. 5, it opens in the counterclockwise direction), and a biasing spring 24 is held in each recess 23b. A rolling member 25 is disposed between the holding portions, and each rolling member 25 is biased in the circumferential direction (in FIG. 5, the counterclockwise direction; the reverse rotation direction) by the biasing spring 24.

[0026] The outer ring 27 is disposed radially outward of each rolling member 25 and is formed in a ring shape (a substantially ring shape may also be acceptable) (see FIG. 5). On the inner circumferential 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. Further, the outer circumferential surface 27d of the outer ring 27 is formed in a circular shape (including a substantially circular shape).

[0027] 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 the 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 unevenness 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 rotation prevention function.

[0028] As shown in FIG. 6, the first cage 23A has the same shape as the outer ring 27, and 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 also 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 the stop 23c). The stop 23c has a constant width in the circumferential direction, and both sides 23e, 23f in the circumferential direction have a rotation prevention function.

[0029] 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. This notch 2c is formed to such an extent that the stops 23c of the first cage 23A and the stops 27c of the outer ring 27 described above can be disposed. By fitting each of the stops 23c, 27c into this notch 2c and disposing the second cage 23B from its surface, the one-way clutch is fixed against rotation and the removal of the outer ring is restricted (the movement in the circumferential direction and the axial direction is restricted).

[0030] Note that the notch 2c only needs to be formed at one or more positions on the circumferential wall 2C. In the present embodiment, two notches 2c are formed at equal intervals in the circumferential direction (two positions symmetric with respect to the center O at 180° intervals) so as to be the same number as the number of bearings formed on the first cage 23A and the outer ring 27. In this way, with respect to the notch 2c, by providing two or more notches 2c, which is the same number as the number of bearings formed on the first cage 23A and the outer ring 27, the one-way clutch can be stably held without rattling.

[0031] The outer peripheral surfaces of the bearings 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 up with a finger. Therefore, each exposed bearing 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. 4). By forming such a chamfer 2d, it becomes easier to perform the attachment and detachment operations of the first cage 23A and the outer ring 27.

[0032] In the above-described configuration, with respect to the bearing 23c of the first cage 23A and the notch 2c, as shown in FIG. 6, it is preferable to configure them to be in contact without a gap (contact in a state without play). According to such a fitting relationship, the relative position of the rolling member 25 mounted on the first cage 23A with respect to the reel body is fixed, and the braking speed does not become slow (it does not take time until braking), and it is possible to maintain quick locking performance.

[0033] That is, if there is play between the two, when the inner ring 21 rotates in the fishing line winding direction, the first retainer 23A that holds the biasing spring 24 is also driven to rotate by the inner ring, and the biasing spring 24 will move in the circumferential direction (in FIG. 5, the biasing spring 24 rotates clockwise together with the first retainer 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 the time until braking is prolonged and rapid locking performance cannot be exhibited. On the other hand, by making the mating portion 23c and the notch 2c of the first retainer 23A in a fitting state without a gap as shown in FIG. 6, the fixed position of the biasing spring 24 can be maintained, and the time until operation due to play is not required, and rapid locking performance can be exhibited during reverse rotation.

[0034] Note that a gap S may be formed between the outer peripheral surface 23g of the first retainer 23A and the circumferential wall 2C to absorb the tolerance of the first retainer 23A.

[0035] Also, for the outer ring 27, as shown in FIG. 5, 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 rotational performance, preventing rattling, and further enabling easy attachment and detachment operations. Further, by configuring the outer ring 27 to be fitted into the circumferential wall 2C so that there is a non-contact state (play S1 occurs) between them, 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 (to prevent electrolytic corrosion). Note that a structure in which an anti-electrolytic corrosion plate is interposed between the two members may also be used.

[0036] Next, with reference to FIGS. 7 and 8, the configuration of the engagement fixing portion 30 that integrates the first cage 23A and the second cage 23B will be described. As described above, this engagement fixing portion 30 is disposed inside the inner peripheral contour of the outer ring 27 in which the wedge region 27a and the free region 27b are formed.

[0037] For example, the engagement fixing portion 30 can be configured by forming displaceable convex portions that protrude axially at predetermined intervals in the circumferential direction on the first cage 23A and forming concave portions into which the convex portions fit at corresponding positions on the second cage 23B. In this configuration, the first cage 23A and the second cage 23B can be integrated by moving the second cage 23B axially so as to sandwich the outer ring 27 and engaging the convex portion with the concave portion.

[0038] Specifically, in the present embodiment, as shown in FIG. 8(b), the convex portion is constituted by a displacement portion (projection piece) 31 that elastically displaces and has a locking claw 31a at its tip, and the concave portion is constituted by a retaining portion 32 that prevents the locking claw 31a of the displacement portion 31 from coming off. In this case, the retaining portion 32 is configured as a fitting hole that allows the locking claw 31a on the tip side of the displacement portion 31 to pass through, making it easy to assemble both (easy to align the displacement portion 31 and the retaining portion 32). That is, when the fitting hole of the second cage 23B is aligned with the displacement portion 31 and the second cage 23B is moved axially and overlapped with the first cage 23A, the locking claw portion elastically displaces (displaces radially inward). Then, when the locking claw 31a passes through the retaining portion 32, the locking claw portion returns to its original position, and the flat portion 31b on the back side of the locking claw 31a engages with the flat portion 32a around the retaining portion 32 to prevent coming off.

[0039] In this way, when assembling the first cage 23A, the outer ring 27, and the second cage 23B, the assembly of the one-way clutch can be easily performed by a simple operation of aligning the second cage 23B with the first cage 23A and moving it axially.

[0040] In the above-described configuration, it is preferable that the displacement portion 31 is integrally formed with the holding portion 23a of the first holder 23A. In the present embodiment, as shown in FIG. 6, the mating portion 23c and the notch portion 2c of the first holder 23A are in a mating state without a gap. Therefore, the biasing spring 24 is always positioned at a stable position, and can exhibit rapid locking performance during reverse rotation.

[0041] Further, in the above-described engagement fixing portion 30, when the displacement portion 31 is elastically deformed, the flat portion 31b on the back side of the locking claw 31a and the flat portion 32a around the retaining portion 32 are fixed with each other in a flat state. Thus, the attachment and detachment operations of the first holder 23A and the second holder 23B can be easily performed.

[0042] Furthermore, it is preferable that a plurality of the above-described engagement fixing portions 30 are provided at a plurality of locations on the first holder 23A and the second holder 23B. In the present embodiment, as shown in FIG. 7, four locations are formed at positions substantially symmetric with respect to the diameter of the one-way clutch. Thereby, a stable fixed state can be obtained without the first holder 23A and the second holder 23B being displaced in the circumferential direction.

[0043] Note that the engagement fixing portion 30 of the present embodiment is configured to be detachable between the first holder 23A and the second holder 23B, but the two members may be integrally fixed by welding, caulking, or screwing. In this way, by fixing the two members, the fixed state becomes strong, and a removal load sufficient to withstand an impact can be ensured.

[0044] Moreover, in the above-described configuration, it is preferable to provide a positioning portion for positioning the outer ring 27 and the second holder 23B between the outer ring 27 and the second holder 23B. By providing such a positioning portion, when the first holder 23A and the second holder 23B are integrated by the engagement fixing portion 30, 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 mating portion 23c of the first holder 23A and the mating portion 27c of the outer ring 27 aligned, handling becomes easy and it becomes easy to assemble into the notch portion 2c of the circumferential wall 2C.

[0045] The positioning portion may be any that can fix the position between the outer ring 27 and the cage 23. For example, as shown in FIGS. 3 to 5, the positioning portion of the present embodiment includes a recess 27c2 formed on the outer peripheral surface 27c1 of the abutment 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 positions overlapping the above-described abutments 23c and 27c, and the protrusion 23c2 is formed so as to hang down on the outer peripheral surface 23n of the protruding piece 23m.

[0046] By disposing the above-described positioning portion, the first cage 23A, the outer ring 27, and the second cage 23B formed in a disc shape are stacked, and the protruding pieces 23m of the second cage 23B can be easily aligned with the abutments 23c of the first cage 23A and the abutments 27c of the outer ring 27 that protrude in the radial direction, respectively. For this reason, by covering the second cage 23B along the axial direction over the outer ring 27, the protrusion 23c2 is fitted into the recess 27c2 for positioning, and is fixed by the engagement fixing portion 30, so that the assembly can be easily performed.

[0047] In the one-way clutch described above, it is preferable that the diameter of the circumferential wall 2C (the diameter of the outer peripheral surface of the circumferential wall) and the outermost diameter of the outer ring 27 (the diameter of the outer peripheral surface 27c1 on the exposed side of the abutment 27c) are the same, whereby the portion where the one-way clutch is disposed can be miniaturized.

[0048] According to the fishing reel incorporating the one-way clutch 20 having the above-described configuration, 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. 5), 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 (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.

[0049] On the other hand, 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 (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. Therefore, 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 abutment 27c, this serves as a stopper to prevent the reverse rotation of the pinion and the rotor 3.

[0050] And the one-way clutch 20 having the above-described configuration has components held (fixing of the first cage 23A and the second cage 23B) radially inside the inner peripheral contour of the outer ring 27. Therefore, it is possible to miniaturize the one-way clutch. Accordingly, for a fishing reel incorporating this, it is possible to reduce the size and weight of the reel body, and the usability during actual fishing can be improved. In this case, the first cage and the second cage can be integrated simply by relatively moving them axially by the engagement fixing portion 30 having the above-described structure, so that the assembly can be easily performed. In particular, as shown in FIG. 6, the first cage 23A is in a state of being rotationally fixed without a gap, and the first cage 23A and the second cage 23B are fixed at the cage portion 23a that holds the biasing spring 24. Therefore, during reverse rotation, it does not take a long time until braking, and rapid locking performance can be exhibited.

[0051] Furthermore, in the present embodiment, stoppers are formed on the first cage 23A and the outer ring 27 so as to protrude radially outward, and these stoppers are fitted into the restricting portions provided on the reel body to restrict movement in the rotational direction. Therefore, unlike the prior art, it is not necessary to screw the reel body or the like, and it is possible to reduce the size and weight of the entire reel. In particular, the restricting portion is constituted by the notch 2c of the circumferential wall 2C provided on the reel body, and by arranging the stoppers 23c and 27c of the first cage 23A and the outer ring 27 here (preferably arranging two or more), it is possible to effectively receive the load applied in the reverse rotation direction.

[0052] 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 so as to enhance the waterproof and dustproof effects on the one-way clutch 20.

[0053] As is well known, this magnetic seal mechanism 50 includes ring-shaped magnetic plates (pole plates) 51 and 52 disposed with a minute gap interposed therebetween from 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.

[0054] 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. This 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.

[0055] 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 substances such as moisture and dust from entering, and to enhance durability.

[0056] As described above, the embodiments of the present invention have been explained. However, the present invention is not limited to the above-described embodiments and can be variously modified.

[0057] Regarding the above engagement fixing portion 30, a displacement portion 31 may be formed on the second cage 23B side, and a retaining portion 32 may be formed on the first cage 23A side. Also, the method of engagement fixing for integration is not particularly limited. For example, a structure may be adopted in which the first cage 23A and the second cage 23B are relatively rotated and locked to each other. Further, the engagement fixing portion 30 may be configured such that not all components are located radially inward of the inner peripheral contour of the outer ring. That is, some components may be disposed at positions overlapping the outer ring.

[0058] The present invention is not particularly limited with respect to the configuration other than the above-described engagement fixing portion 30. For example, the restricting portion and the indexing configuration for preventing the one-way clutch from rotating can be appropriately modified. The one-way clutch in the above-described embodiment prevents the reverse rotation of the rotor by fixing the cage. 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 and allow the reverse rotation of the rotor. Further, a restricting plate (not shown) may be separately disposed adjacent to the one-way clutch 20 so as to restrict the axial movement of the one-way clutch 20.

[0059] In the present 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.

Explanation of Reference Numerals

[0060] 1 Spinning reel (fishing reel) 2 Reel body 2C Circumferential wall (restricting portion) 2c Notch 3 Rotor 20 One-way clutch 23 Retainer 23A First retainer 23B Second retainer 23c Alignment 27 Outer ring 27c Alignment 30 Engagement fixing part

Claims

1. A one-way clutch comprising: an inner ring; an outer ring; and a cage that holds a biasing spring for biasing a plurality of rolling members, wherein the cage includes a first cage provided with the holding portion, and a second cage attached to the first cage so as to axially sandwich the outer ring, and the first cage and the second cage are integrated by an engagement fixing portion provided radially inside the inner peripheral contour of the outer ring, characterizing the one-way clutch.

2. The engagement fixing portion has a displacement portion that elastically displaces and has a locking claw when the first cage and the second cage are relatively axially moved, and a retaining portion that prevents the locking claw of the displacement portion from coming off, characterizing the one-way clutch according to claim 1.

3. The displacement portion is integrally formed with the holding portion of the first cage, and the retaining portion is a fitting hole formed in the second cage and into which the locking claw of the displacement portion is locked, characterizing the one-way clutch according to claim 2.

4. A plurality of the engagement fixing portions are provided at a plurality of locations on the first cage and the second cage, characterizing the one-way clutch according to claim 1.

5. The engagement fixing portion integrally fixes the first cage and the second cage by welding, caulking, or screwing, characterizing the one-way clutch according to claim 1.

6. In a fishing reel incorporating a one-way clutch that allows one-way rotation of a rotary drive shaft supported within a reel body and prevents rotation in the other direction, the one-way clutch includes an inner ring, an outer ring, and a cage that holds a biasing spring for biasing a plurality of rolling members, the cage includes a first cage provided with the holding portion, and a second cage attached to the first cage so as to axially sandwich the outer ring, and the first cage and the second cage are integrated by an engagement fixing portion provided radially inside the inner peripheral contour of the outer ring, characterizing the fishing reel.

7. A restricting portion is provided on the reel body to fix the one-way clutch so as to restrict movement in the rotational direction, and abutting portions that project radially outward are formed on the first cage and the outer ring, respectively, and the one-way clutch is restricted in rotational movement by the restricting portion provided on the reel body and the respective abutting portions. The fishing reel according to claim 6, characterized in that...

8. The regulating portion is a notch formed along the circumferential direction on the circumferential wall provided on the reel body, and the graduation is disposed therein. The fishing reel according to claim 7, characterized in that...

Images