One-way clutch for fishing reels

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 The anti-reverse mechanism of a fishing reel a one-way clutch.

Background Art

[0002] A fishing spinning reel has a structure including a rotor that rotates interlockingly by 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 the rotor from rotating in reverse when an attempt is made to rotate the handle in the reverse direction.

[0003] The reverse prevention mechanism is constituted by, for example, 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 that is disposed radially outward of the inner ring and holds a plurality of rolling members, and an outer ring that is 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 by fitting the locking portions into locking grooves formed on the inner surface of a cylindrical portion integrated with the reel body, the outer ring is rotationally locked 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] The one-way clutch described above is housed within a cylindrical section formed in the reel body. In other words, the entire outer ring is housed within the cylindrical section, and the outer ring is fixed in place by engaging the protrusions and indentations formed on the outer surface of the outer ring with the inner surface of the cylindrical section. Therefore, there are limitations to miniaturizing and lightening the reel body, and there is room for improvement.

[0006] This invention was made in view of the above-mentioned problems, One-way clutch that constitutes the anti-reverse mechanism of a fishing reel The objective is to provide a structure that enables miniaturization and weight reduction. [Means for solving the problem]

[0007] To achieve the above objectives, the spinning reel for fishing according to the present invention comprises a drive shaft that is rotationally driven by the rotational operation of a handle rotatably supported on the reel body, a one-way clutch disposed on the drive shaft and having a retainer that holds an inner ring, an outer ring, and a plurality of rolling members, and a cylindrical portion formed in the reel body that houses the one-way clutch, wherein the outer ring is provided with a bearing that protrudes radially outward, and a notch is formed that penetrates the circumferential wall of the cylindrical portion radially, and the bearing of the outer ring is disposed in the notch so that it is radially exposed, thereby preventing the outer ring from rotating and fixing it in place.

[0008] In the spinning reel for fishing with the above configuration, a radially penetrating notch is formed in the circumferential wall of the cylindrical part of the reel body, and the outer ring's contact point is positioned here so that it is radially exposed, thereby preventing the outer ring from rotating and fixing it in place. In this way, since the outer ring of the one-way clutch is not fixed to prevent rotation on the inner circumferential surface of the cylindrical part of the reel body, it becomes possible to reduce the diameter of the cylindrical part as much as possible, making it possible to miniaturize and lighten the reel body.

[0009] Furthermore, the spinning reel for fishing according to the present invention has a drive shaft that is rotationally driven by the rotational operation of a handle rotatably supported on the reel body, and a one-way clutch disposed on the drive shaft and having a retainer that holds an inner ring, an outer ring, and a plurality of rolling members, and is characterized in that a bearing is provided on the outer ring that protrudes radially outward, and the reel body is provided with a contact portion that contacts the bearing at two points on both sides of the bearing to restrict the rotation of the outer ring.

[0010] The spinning reel for fishing described above has a radially protruding contact point formed on the outer ring of the one-way clutch. By providing contact points on the reel body that contact the contact point at two points on both sides of the contact point to restrict the rotation of the outer ring, the structure of the part that prevents the outer ring from rotating and fixes it can be simplified, thereby making the reel body smaller and lighter. [Effects of the Invention]

[0011] According to the present invention, One-way clutch for preventing reverse rotation in fishing reels This allows for a structure that is smaller and lighter. [Brief explanation of the drawing]

[0012] [Figure 1] An exploded perspective view showing a first embodiment of a spinning reel for fishing according to the present invention. [Figure 2] Figure 1 shows an axial cross-sectional view of the main part of a spinning reel for fishing. [Figure 3] Cross-sectional view along line AA in Figure 2. [Figure 4] A perspective view showing the fixed state of a one-way clutch. [Figure 5] Figure 4 is a perspective view showing the one-way clutch with the retainer cover member positioned on it. [Figure 6] An exploded perspective view showing a second embodiment of a spinning reel for fishing according to the present invention. [Figure 7] A perspective view showing the fixed state of a one-way clutch. [Modes for carrying out the invention]

[0013] Figs. 1 and 2 are diagrams showing a first embodiment of a fishing spinning reel. 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. One-way clutch used in The reel body 2 of the fishing spinning reel (hereinafter referred to as the reel) 1 according to the present embodiment is integrally formed with a reel foot 2A to be attached to a fishing rod. 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 arranged.

[0014] The rotor 3 includes a pair of arm portions 3a that rotate around the spool. At the front end portion of each of the arm portions 3a, a bail support member 3b to which the base end portion of the bail 5 is attached is supported to be rotatable between a fishing line winding position and a 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] Inside 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 transmits the driving force to the rotor 3 to rotationally drive the rotor when the handle is rotationally operated.

[0016] <000 / 00087>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 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.

[0017]

[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 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. 1 to 4. As shown in FIG. 1, a base portion 2B formed in a substantially disc 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 has an inner ring 21, an outer ring 27, and a retainer 23 that holds a plurality of rolling members, and further has a cover member 23A (see FIG. 5) 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 functions 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 partially non-circular portion is 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 retainer 23 is disposed radially outward from the inner ring 21 and includes retaining parts 23a arranged at regular intervals in the circumferential direction. Each retaining part 23a is equipped with a biasing spring 24, which biases the rolling member 25 disposed between the retaining parts in the circumferential direction (counterclockwise direction; reverse rotation direction in Figure 3).

[0023] The outer ring 27 is positioned radially outward of the retainer 23 and is formed in a substantially ring shape. The inner circumferential surface of the outer ring 27 has a wedge region 27a that prevents the rotation of each rolling member 25 and a free region 27b that allows the rolling members 25 to rotate freely. Each rolling member 25 held by the retainer 23 is constantly biased toward the wedge region by a biasing spring 24. Furthermore, the outer circumferential surface 27d of the outer ring 27 is formed in a circular shape, except for the portion where the angled contact 27c is formed.

[0024] A projection 27c is provided on a part of the outer ring 27 so as to protrude radially outward. This projection 27c functions as a rotation restraint to restrict the rotation of the outer ring 27 (hereinafter referred to as rotation restraint 27c). The rotation restraint 27c is integrally formed so as to protrude radially outward from the outer circumferential surface 27d of the outer ring 27, and one or more are provided. In this case, a large torque is applied to the outer ring, and stress may concentrate and cause unevenness if there is only one, so it is preferable to form two or more at equal intervals. In this embodiment, two are provided at 180° intervals so as to face each other on either side of the central axis X. The rotation restraint 27c has a constant width in the circumferential direction, and both sides 27e and 27f in the circumferential direction have a rotation restraint function.

[0025] A notch 2c is formed in the cylindrical portion 2C that protrudes from the reel body 2, and the notch 2c penetrates its circumferential wall 2a in the radial direction. This notch 2c is formed to the extent that the angle plate 27c of the outer ring 27 can be fitted into it, and by fitting the angle plate 27c into this notch 2c and arranging it so that the exposed surface 27g is exposed in the radial direction, the outer ring 27 is fixed in place to prevent rotation (rotation is restricted).

[0026] The aforementioned notches 2c only need to be formed in one or more places on the circumferential wall 2a, but in this embodiment, two notches are formed at equal intervals in the circumferential direction (two places symmetrical with respect to the axis X at 180° intervals). In other words, the number of notches should be the same as the number of angle marks on the outer ring 27.

[0027] The outer surface of the aforementioned pressure point 27c is radially exposed at the notched portion 2c of the cylindrical portion 2C, making it possible to grip it with a finger. As a result, the pressure point makes it easier to grip the outer ring 27, improving the ease of attaching and detaching the one-way clutch 20.

[0028] Furthermore, in the above configuration, the diameter of the circumferential wall 2a of the cylindrical portion 2C (the diameter of the outer surface of the circumferential wall) and the outermost diameter of the outer ring 27 (the diameter of the exposed surface 27g portion of the contact patch 27c) are the same. In this case, the outer ring 27 is fitted into the circumferential wall 2a so that a gap is created between them, thereby ensuring rotational performance while preventing looseness and enabling miniaturization in the radial direction. In addition, the small gap makes attachment and detachment operations easier.

[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 Figure 5, a cover (cover member) 23A that covers the retainer 23 and the outer ring 27 is attached to the surface portion of the outer ring 27 shown in Figure 4, and the outer ring 27 is held between the retainer 23 and the cover member 23A. In addition, an anti-corrosion plate (corrosion-preventing plate) may be attached to the cover member 23A. Furthermore, a restricting plate may be placed adjacent to the one-way clutch to restrict the axial movement of the one-way clutch 20. Alternatively, as shown in Figures 1 and 2, a magnetic sealing mechanism 50 may be provided to enhance the waterproof and dustproof effect on the one-way clutch 20.

[0030] As is well known, this magnetic seal mechanism 50 comprises ring-shaped magnetic plates (electrodes) 51, 52 arranged with a minute gap between them and the outer surface of the drive shaft (inner ring 21), and a ring-shaped magnet 53 sandwiched between the magnetic plates, with magnetic fluid filling the gap between the drive shaft and the magnetic plates (see Figures 1 and 2).

[0031] Furthermore, in this 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 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] The one-way clutch 20 with the above configuration prevents the handle (rotor 3) from rotating in the direction of the fishing line being fed out (reverse rotation). In other words, when the handle is rotated in the fishing line winding direction, the pinion 11 is driven to rotate (rotated in the clockwise direction in Figure 3), and the inner ring 21 rotates in the same direction along 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 together with the pinion 11 without any problems.

[0033] In contrast, when the inner ring 21 attempts to rotate in the opposite direction along with the pinion 11 (the rotor 3 rotates in the direction of fishing line payout), the rolling member 25 held by the retainer 23 rolls in a counterclockwise direction and is positioned in the wedge region 27a of the outer ring 27 by the biasing spring 24, so 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 contact 27c, this acts as a stopper, preventing the pinion 11 and rotor 3 from rotating in the opposite direction.

[0034] In the above configuration, a radially penetrating notch 2c is formed in the circumferential wall 2a of the cylindrical portion 2C on the reel body side, and a contact patch 27c formed on the outer ring 27 of the one-way clutch 20 is positioned to expose the outer ring 27 radially, thereby preventing the outer ring 27 from rotating and fixing it in place. In other words, since the outer ring 27 is not fixed in place by grooves or protrusions formed on the inner surface of the cylindrical part, as in conventional designs, it becomes possible to reduce the diameter and thickness of the cylindrical part 2C as much as possible, thereby enabling the reel body to be made smaller and lighter.

[0035] Furthermore, in this embodiment, a magnetic seal mechanism 50 is provided on the spool side of the one-way clutch 20, and a waterproof cap 60 is provided so as to enclose the cylindrical portion 2C and the one-way clutch 20. This prevents foreign matter such as moisture and dust from entering, thereby increasing durability.

[0036] Figures 6 and 7 show a second embodiment of the spinning reel for fishing according to the present invention. The one-way clutch 20 of this embodiment has the same configuration as the first embodiment, with angle contacts 27c formed on the outer ring 27 at 180° intervals. The one-way clutch of this embodiment may also have a configuration similar to that shown in Figure 5, with a cover member 23A of the retainer 23 and an anti-corrosion plate attached.

[0037] In this embodiment, the reel body 2 has a contact portion 2E formed on it, which is formed when the side surface of the angle plate 27c of the outer ring 27 comes into contact with it to restrict the rotation of the outer ring. The contact portion 2E does not need to be cylindrical as in the first embodiment; it can be any structure that protrudes in the axial direction and is formed when the side surface of the angle plate 27c comes into contact with it to restrict its rotation. For this reason, if one angle plate is provided on the outer ring, it is sufficient to position it so that it comes into contact with the outer ring at two points on both sides of the angle plate in the circumferential direction to restrict its rotation in both directions.

[0038] In this embodiment, since the pressure points 27c are formed in two locations on the outer ring 27 at 180° intervals, contact portions 2E are provided on both sides of each pressure point in the circumferential direction, and each pressure point is configured to make contact at two points on both sides in the circumferential direction (the side surfaces 2E' of the contact portions 2E).

[0039] With this configuration, unlike the first embodiment described above, the one-way clutch can be fixed in place without rotation without providing a cylindrical portion with a notch, and further, it is possible to reduce weight and size. In addition, with this configuration, space is created around the contact portion, making it possible to easily attach and detach the one-way clutch 20.

[0040] Furthermore, it is preferable that such abutment portion 2E be formed to make contact at two points radially inward from the outermost diameter position of the contact point 27c of the outer ring 27. With this configuration, the contact portion 2E can be made thinner, which makes it possible to further reduce the weight.

[0041] Although embodiments of the present invention have been described above, the present invention is not limited to the embodiments described above and can be modified in various ways. The shape of the prescription contact 27c in the above configuration can be modified as appropriate. For example, the exposed surface 27g of the prescription contact may protrude radially from the cylindrical portion 2C within the notch 2c of the cylindrical portion 2C, or it may not protrude. In the configuration shown in Figure 7, the prescription contact is configured to contact the contact portion 2E on both sides in the circumferential direction, but a recess may be formed in the central part of the prescription contact along the axial direction, and the contact portion may be formed to fit into this recess. Alternatively, a contact portion with a U-shaped cross-section extending axially may be provided on the reel body to contact both sides of the prescription contact 27c.

[0042] Furthermore, in the embodiment described above, the retainer 23 was fixed to prevent the rotor from rotating in the reverse direction. However, an operating member protruding from the outside of the reel body may be provided, and the retainer can be rotated by operating the operating member to position the rolling member in the free region, thereby allowing the rotor to rotate in the reverse direction. [Explanation of Symbols]

[0043] 1. Spinning reel for fishing 2 Reel body 2C Cylindrical section 2c Notch 3 rotors 20 One-way clutch 27 Outer ring 27°C (prescription)

Claims

1. A one-way clutch disposed on a drive shaft which is rotationally driven by the rotational operation of a handle rotatably supported on the reel body, and having a retainer that holds an inner ring, an outer ring and a plurality of rolling members, and a cover which is integrated with the retainer and covers the retainer and the outer ring, The outer ring has a disc that protrudes radially outward from its outer surface, which is integrally formed on the outer ring to have a function of preventing rotation relative to the reel body. The outer ring, the retainer holding the multiple rolling members, and the cover are unitized. The outer ring is held between the retainer and the cover. A one-way clutch characterized by the following features.

2. The one-way clutch according to claim 1, characterized in that two or more of the aforementioned contact points are formed.

3. The one-way clutch according to claim 1, characterized in that an electrolytic corrosion prevention plate is mounted on the cover.

4. The one-way clutch according to any one of claims 1 to 3, characterized in that it has an operating member for rotating the retainer.

5. The one-way clutch according to any one of claims 1 to 3, characterized in that the retainer is fixed.

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