Spinning reel for fishing

Abstract

To provide a structure capable of reducing the size and weight of a reel body in a spinning reel for fishing incorporating a one-way clutch.SOLUTION: A spinning reel for fishing has: a drive shaft rotatingly driven by rotation operation of a handle rotatably supported by a reel body; a one-way clutch 20 disposed on the drive shaft, having an inner ring 21, an outer ring 27 and a cage 23 for supporting a plurality of rolling members 25; and a cylindrical part 2C formed on the reel body and storing the one-way clutch 20. On the outer ring 27, a stopper 27c projecting outward in a radial direction is disposed and also a notch part 2c penetrating a circumferential wall 2a of a cylindrical part 2C in the radial direction is formed, and the outer ring 27 is fixed to prevent rotation with the stopper 27c of the outer ring 27 disposed to be exposed to the notch part 2c in the radial direction.SELECTED DRAWING: Figure 3

Description

Technical Field

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

Background Art

[0002] A fishing spinning reel has a structure including a rotor that rotates in conjunction with a winding rotation operation of a handle and a spool that moves back and forth. Generally, a fishing spinning reel incorporates a reverse prevention mechanism that allows the rotor to rotate in the fishing line winding direction by a rotation operation of the handle and prevents reverse rotation of the rotor when an attempt is made to reverse-rotate the handle.

[0003] The reverse prevention mechanism is, for example, as disclosed in Patent Document 1, a one-way clutch including an inner ring that is rotationally locked to a pinion gear that rotates integrally by a rotation operation of the handle, 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. Locking portions are formed at predetermined intervals in the circumferential direction on the outer periphery of the outer ring, and the outer ring is rotationally locked and fixed to the reel body by fitting the locking portions into locking grooves formed on the inner surface of a cylindrical portion integrated with the reel body.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] The above-described one-way clutch has a structure that is housed inside a cylindrical portion formed in the reel body. That is, since the entire outer ring is housed inside the cylindrical portion and the unevenness formed on the outer peripheral surface of the outer ring and the inner peripheral surface of the cylindrical portion are engaged to fix the outer ring against rotation, there are limitations in downsizing and weight reduction of the reel body, and there is room for improvement.

[0006] The present invention has been made paying attention to the above-described problems, and an object thereof is to provide a structure capable of downsizing and weight reduction of a reel body in a fishing spinning reel incorporating a one-way clutch.

Means for Solving the Problems

[0007] In order to achieve the above object, a fishing spinning reel according to the present invention includes a drive shaft that is rotationally driven by a rotational operation of a handle rotatably supported by a reel body, and a one-way clutch disposed on the drive shaft and having a cage that holds an inner ring, an outer ring, and a plurality of rolling members, and a cylindrical portion formed in the reel body and accommodating the one-way clutch. The outer ring is provided with a stopper protruding radially outward, a notch portion penetrating the circumferential wall of the cylindrical portion in the radial direction is formed, and the stopper of the outer ring is disposed so as to be exposed in the radial direction in the notch portion to fix the outer ring against rotation.

[0008] The fishing spinning reel having the above-described configuration forms a notch portion penetrating in the radial direction in the circumferential wall of the cylindrical portion provided in the reel body, and the stopper of the outer ring is disposed so as to be exposed in the radial direction here to fix the outer ring against rotation. Thus, since the outer ring of the one-way clutch is not fixed against rotation on the inner peripheral surface of the cylindrical portion of the reel body, the cylindrical portion can be made as small in diameter as possible, and it becomes possible to downsize and weight-reduce the reel body.

[0009] In addition, the spinning reel for fishing according to the present invention includes a drive shaft that is rotationally driven by a rotational operation of a handle rotatably supported on a reel body, and a one-way clutch disposed on the drive shaft and having a cage that holds an inner ring, an outer ring, and a plurality of rolling members. The outer ring is provided with a stopper that protrudes radially outward, and the reel body is provided with an abutting portion that abuts on two points on both side surfaces of the stopper to restrict the rotation of the outer ring.

[0010] The above-described spinning reel for fishing forms a stopper that protrudes radially on the outer ring of the one-way clutch, and by providing an abutting portion on the reel body that abuts on two points on both side surfaces of the stopper to restrict the rotation of the outer ring, the structure of the portion that fixes the outer ring against rotation can be simplified, and thereby, miniaturization and weight reduction of the reel body can be achieved.

Effects of the Invention

[0011] According to the present invention, in a spinning reel for fishing incorporating a one-way clutch, a structure capable of achieving miniaturization and weight reduction of the reel body can be obtained.

Brief Description of the Drawings

[0012]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Modes for Carrying Out the Invention

[0013] FIG. 1 and FIG. 2 are diagrams showing a first embodiment of a fishing spinning reel according to the present invention. First, an outline of the overall configuration of the fishing spinning reel will be described. In the following description, the front and the rear mean the directions shown in FIG. 2.

[0014] A reel leg 2A for attaching to a fishing rod is integrally formed on a reel body 2 of a fishing spinning reel (hereinafter referred to as a reel) 1 according to the present embodiment. In front of the reel body 2, a rotatably supported rotor 3 and a spool (not shown) supported to be movable back and forth in synchronization with the rotational movement of the rotor 3 are disposed.

[0015] 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 guide portion (line roller) 6 provided integrally with the bail support member 3b.

[0016] 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. The handle shaft is provided with a driving force transmission mechanism 10 that transmits the driving force to the rotor 3 to rotationally drive the rotor when the handle is rotationally operated.

[0017] As is well known, the driving force transmission mechanism 10 includes a driving gear rotatably attached integrally with 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 has a function as a rotation driving portion (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 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). Further, a one-way clutch 20 constituting a reverse prevention device is disposed on the pinion 11.

[0019] With the above-described configuration, when the handle is wound, 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 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.

[0020] Next, the one-way clutch 20 of the present embodiment will be described with reference to FIGS. 1 to 4. 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 cylindrical portion 2C is formed on the surface portion of the base portion 2B in the axial direction. The pinion 11 is rotatably supported through the central portion of the cylindrical portion 2C, and a one-way clutch 20 is disposed in the intermediate portion thereof.

[0021] The pinion 11 is rotationally driven via a drive gear by a rotational operation of the handle, and the one-way clutch 20 is disposed in the intermediate portion of the pinion 11 to allow rotation of the pinion 11 in the fishing line winding direction and prevent reverse rotation. The one-way clutch 20 includes an inner ring 21, an outer ring 27, and a retainer 23 that holds a plurality of rolling members 25, and further includes a cover member 23A (see FIG. 5) that is integrated with the retainer 23. These elements (even some of the elements) can be unitized in advance.

[0022] The inner ring 21 is prevented from rotating relative to the pinion 11 and has the function of 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 rotates integrally with the pinion 11. The cage 23 is disposed radially outward of the inner ring 21 and includes holding portions 23a disposed at regular intervals in the circumferential direction. An urging spring 24 is disposed on each holding portion 23a, and urges the rolling members 25 disposed between the holding portions in the circumferential direction (in the counterclockwise direction; reverse rotation direction in FIG. 3).

[0023] The outer ring 27 is disposed radially outward of the cage 23 and is formed in a substantially ring shape. 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 formed. Each rolling member 25 held by the cage 23 is constantly urged toward the wedge region side by the urging spring 24. Further, the outer peripheral surface 27d of the outer ring 27 is formed in a circular shape except for the portion where the following stopper 27c is formed.

[0024] A protruding piece 27c is provided on a part of the outer ring 27 so as to protrude radially outward. This protruding piece has the function of a stopper that restricts the rotation of the outer ring 27 (hereinafter referred to as the stopper 27c). The stopper 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 central axis X interposed therebetween at 180° intervals. The stopper 27c has a constant width in the circumferential direction, and both sides 27e, 27f in the circumferential direction have a rotation-preventing function.

[0025] On the cylindrical portion 2C protruding from the reel body 2, a notch 2c that penetrates the circumferential wall 2a in the radial direction is formed. This notch 2c is formed to such an extent that the alignment portion 27c of the outer ring 27 can be fitted therein. By fitting the alignment portion 27c into this notch 2c and disposing it so as to expose the surface 27g on the exposed side in the radial direction, the outer ring 27 is fixed against rotation (rotation is restricted).

[0026] The notch 2c may be formed at one or more locations on the circumferential wall 2a. In the present embodiment, however, it is formed at two locations (two locations that are symmetric with respect to the axis X at 180° intervals) at equal intervals in the circumferential direction. That is, the number of notches provided may be the same as the number of alignment portions of the outer ring 27.

[0027] The outer surface of the alignment portion 27c is exposed in the radial direction at the notch 2c portion of the cylindrical portion 2C, and it is possible to attach a finger and pinch it. For this reason, it becomes easier to pinch the outer ring 27 by the alignment portion, and the workability of attaching and detaching the one-way clutch 20 can be improved.

[0028] Also, in the above-described configuration, the diameter of the circumferential wall 2a of the cylindrical portion 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 surface 27g portion on the exposed side of the alignment portion 27c) are configured to be the same. In this case, the outer ring 27 is configured to be fitted into the circumferential wall 2a so that a gap is generated between the two. Thereby, it is possible to prevent rattling while ensuring the rotational performance and to reduce the size in the radial direction. Also, by providing a slight gap, the attachment and detachment operation can be easily performed.

[0029] The one-way clutch 20 configured as described above is unitized and incorporated into the cylindrical portion 2C. In this case, as shown in FIG. 4, on the surface portion of the outer ring 27, as shown in FIG. 5, a retainer 23 and a lid body (cover member) 23A that covers the outer ring 27 are mounted, and the outer ring 27 is in a state of being sandwiched between the retainer 23 and the cover member 23A. Further, an electric erosion prevention plate (corrosion prevention plate) or the like may be mounted on the cover member 23A. Furthermore, a regulation plate may be disposed adjacent to the one-way clutch so as to regulate the axial movement of the one-way clutch 20. Alternatively, as shown in FIGS. 1 and 2, a magnetic seal mechanism 50 may be disposed so as to enhance the waterproof and dustproof effects on the one-way clutch 20.

[0030] This magnetic seal mechanism 50 includes, as is well known, ring-shaped magnetic plates (pole plates) 51, 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 such that a magnetic fluid is filled in the gap between the drive shaft and the magnetic plates (see FIGS. 1 and 2).

[0031] In the present embodiment, a waterproof cap 60 is provided on the reel body so as to enclose the cylindrical portion 2C and the one-way clutch 20. This waterproof cap 60 has a shape including a cylindrical portion 61 that surrounds the one-way clutch 20 and a cover portion 62 that closes the opening on the spool side, and the magnetic plate 51 of the magnetic seal mechanism 50 is in close contact with the inner surface of the cover portion 62.

[0032] According to 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 11 (rotationally driven in the clockwise direction in FIG. 3), the inner ring 21 also rotates in the same direction together with the pinion 11. At this time, the rolling member 25 held by the retainer 23 moves to the free region 27b of the outer ring 27, so 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.

[0033] On the other hand, when the inner ring 21 tries to rotate in the reverse direction together with the pinion 11 (the rotor 3 rotates in the fishing line payout direction), the rolling member 25 held by the cage 23 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. 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 11 and the rotor 3.

[0034] And in the above-described configuration, a notch 2c penetrating in the radial direction is formed in the circumferential wall 2a of the cylindrical portion 2C on the reel body side, and the stopper 27c formed on the outer ring 27 of the one-way clutch 20 is disposed so as to be radially exposed here, thereby fixing the outer ring 27 against rotation. That is, since the outer ring 27 is not fixed against rotation by a groove or a projection formed on the inner peripheral surface of the cylindrical portion as in the conventional case, the cylindrical portion 2C can be made as small in diameter as possible, and further, the wall thickness can be made thinner, so that the reel body can be miniaturized and lightened.

[0035] Further, in the present embodiment, a magnetic seal mechanism 50 is disposed on the spool side of the one-way clutch 20, and a waterproof cap 60 is provided so as to wrap the cylindrical portion 2C and the one-way clutch 20, thereby preventing foreign matters such as moisture and dust from entering and enhancing durability.

[0036] FIGS. 6 and 7 are views showing a second embodiment of a fishing spinning reel according to the present invention. The one-way clutch 20 of the present embodiment has the same configuration as that of the first embodiment, and stoppers 27c are formed on the outer ring 27 at intervals of 180°. Note that the one-way clutch of the present embodiment may also have a configuration in which the cover member 23A of the cage 23 and the anticorrosion plate are mounted, similar to the configuration shown in FIG. 5.

[0037] In this embodiment, an abutting portion 2E is formed on the reel body 2, against which the side surface of the alignment portion 27c of the outer ring 27 abuts to restrict the rotation of the outer ring. Regarding the abutting portion 2E, unlike in the first embodiment, it does not need to be configured in a cylindrical shape, and any structure that protrudes in the axial direction and against which the side surface of the alignment portion 27c abuts to restrict rotation is acceptable. For this reason, if there is one alignment portion provided on the outer ring, it may be installed so as to abut at two points on both circumferential sides of the alignment portion so as to restrict the rotation in both directions.

[0038] Note that in this embodiment, since two alignment portions 27c are formed on the outer ring 27 at intervals of 180°, abutting portions 2E are provided on both circumferential sides of each alignment portion, and are configured to abut at two points on both circumferential sides of each alignment portion (side surfaces 2E' of the abutting portions 2E).

[0039] According to such a configuration, like in the above-described first embodiment, it is possible to prevent the one-way clutch from rotating without providing a cylindrical portion having a notch, and furthermore, it is possible to achieve weight reduction and miniaturization. Also, in such a configuration, since a space is created around the abutting portion, it is possible to easily attach and detach the one-way clutch 20.

[0040] Furthermore, it is preferable that such an abutting portion 2E is formed to abut at two points radially inside the outermost diameter position of the alignment portion 27c of the outer ring 27. In such a configuration, the thickness of the abutting portion 2E can be made thinner, so that further weight reduction can be achieved.

[0041] The embodiments of the present invention have been described above, but the present invention is not limited to the above-described embodiments and can be variously modified. Regarding the stopper 27c with the above-described configuration, its shape can be appropriately deformed. For example, the surface 27g on the exposed side of the stopper may protrude radially from the cylindrical portion 2C within the notch 2c of the cylindrical portion 2C, or it may not protrude. Also, in the configuration shown in FIG. 7, it is configured to abut against the contact portion 2E on both circumferential sides of the stopper. However, a recess may be formed along the axial direction in the central portion of the stopper, and the contact portion may be formed so as to fit into this recess. Alternatively, a contact portion extending axially in a U-shaped cross-section may be provided on the reel body so as to abut against both sides of the stopper 27c.

[0042] Furthermore, in the above-described embodiment, the cage 23 is fixed to prevent reverse rotation of the rotor. However, a structure may be adopted in which an operating member protruding outside the reel body is provided, and the cage is rotated by operating the operating member to position the rolling member in the free region and allow reverse rotation of the rotor.

Explanation of Reference Numerals

[0043] 1 Fishing spinning reel 2 Reel body 2C Cylindrical portion 2c Notch 3 Rotor 20 One-way clutch 27 Outer ring 27c Stopper

Claims

1. A drive shaft that is rotationally driven by a rotational operation of a handle rotatably supported by a reel body, A one-way clutch disposed on the drive shaft and having an inner ring, an outer ring, and a cage that holds a plurality of rolling members, A cylindrical portion formed on the reel body and housing the one-way clutch, In a fishing spinning reel having, A stopper is integrally formed so as to project radially outward from the outer peripheral surface of the outer ring, and a notch is formed that penetrates the circumferential wall of the cylindrical portion in the radial direction, A fishing spinning reel, characterized in that the stopper of the outer ring is disposed so as to be radially exposed in the notch to fix the outer ring against rotation.

2. The fishing spinning reel according to claim 1, wherein two or more notches are formed at equal intervals in the circumferential direction of the circumferential wall, and the same number of stoppers as the notches are provided.

3. The fishing spinning reel according to claim 1 or 2, characterized in that the diameter of the outer peripheral surface of the circumferential wall is the same as the outermost diameter of the outer ring.

4. The fishing spinning reel according to any one of claims 1 to 3, characterized in that a waterproof cap is provided that wraps around the cylindrical portion and the one-way clutch.

5. A drive shaft that is rotationally driven by a rotational operation of a handle rotatably supported by a reel body, A one-way clutch disposed on the drive shaft and having an inner ring, an outer ring, and a cage that holds a plurality of rolling members, In a fishing spinning reel having, A stopper is integrally formed so as to project radially outward from the outer peripheral surface of the outer ring, A fishing spinning reel, characterized in that the reel body is provided with contact portions that contact at two points on both sides of the stopper to restrict the rotation of the outer ring.

6. The fishing spinning reel according to claim 5, characterized in that the contact portion is provided radially inward of the outermost diameter position of the stopper.

7. The fishing spinning reel according to any one of claims 1 to 6, characterized in that it has an operating member that protrudes outside the reel body and rotates the cage.

8. The fishing spinning reel according to any one of claims 1 to 6, characterized in that the cage is fixed.

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