Spinning reels for fishing

Abstract

The present invention provides a structure for a spinning-type fishing reel incorporating a one-way clutch, which can achieve a compact and lightweight reel body. Specifically, the spinning-type fishing reel of the present invention comprises: a drive shaft, which is rotationally driven by a handle rotatably supported on the reel body; a one-way clutch, disposed on the drive shaft, comprising an inner ring, an outer ring, and a retainer for retaining a plurality of rolling elements; and a cylindrical portion formed on the reel body for housing the one-way clutch. The outer ring is provided with a radially outwardly projecting protruding piece, and a notch is formed radially through the circumferential wall of the cylindrical portion. The outer ring's protruding piece is disposed so as to radially protrude from the notch to secure the outer ring against rotation.

Description

Technical Field

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

[0002] A spinning reel for fishing features a rotor that rotates in conjunction with the reel's handle, and a spool that moves back and forth. Typically, spinning reels are equipped with a reverse rotation prevention mechanism that allows the rotor to rotate in the reeling direction when the handle is rotated, but prevents the rotor from rotating in the reverse direction when the handle is reversed.

[0003] For example, as disclosed in Patent Document 1, the reverse rotation prevention mechanism comprises a one-way clutch comprising: an inner ring fixedly engaged with a pinion gear that rotates integrally with the reel when the handle is rotated; a retainer disposed radially outward of the inner ring and retaining a plurality of rolling elements; and an outer ring disposed radially outward of the retainer. The outer ring has locking portions formed on its outer circumference at predetermined intervals. These locking portions engage with locking grooves formed on the inner surface of a cylindrical portion integral with the reel body, thereby preventing the outer ring from rotating relative to the reel body.

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Laid-Open No. 2012-23965 Summary of the Invention

[0006] The aforementioned one-way clutch is housed within a cylindrical portion formed on the reel body. Specifically, since the outer ring is entirely housed within the cylindrical portion, and the outer ring's outer circumference engages with the inner circumference of the cylindrical portion to prevent rotation of the outer ring, there are limitations on the ability to reduce the size and weight of the reel body, leaving room for improvement.

[0007] The present invention is made with the above-mentioned problems in mind, and the technical problem to be solved is to provide a structure that can realize miniaturization and lightness of the reel body on a spinning reel for fishing equipped with a one-way clutch.

[0008] In order to achieve the above-mentioned purpose, the fishing spinning reel involved in the present invention comprises: a drive shaft, which is rotationally driven by rotating the handle rotatably supported on the reel body; a one-way clutch, which is arranged on the drive shaft and has an inner ring and an outer ring and a retainer for holding multiple rolling parts; and a cylindrical portion, which is formed on the reel body and is used to accommodate the one-way clutch, and is characterized in that a protruding piece protruding radially outward is provided on the outer ring, and a notch portion is formed that radially penetrates the circumferential wall of the cylindrical portion, and the protruding piece of the outer ring is arranged to be exposed radially in the notch portion so as to prevent the outer ring from rotating.

[0009] The spinning reel for fishing constructed as described above has a radially extending cutout formed in the circumferential wall of the cylindrical portion provided on the reel body. Here, the outer ring's protruding piece is arranged to be radially exposed, thereby securing the outer ring against rotation. This prevents the outer ring of the one-way clutch from being secured against rotation by the inner circumferential surface of the reel body's cylindrical portion. This allows the cylindrical portion to have a minimal diameter, thus minimizing the size and weight of the reel body.

[0010] In addition, the spinning reel for fishing involved in the present invention comprises: a drive shaft, which is rotationally driven by rotating the handle rotatably supported on the reel body; and a one-way clutch, which is arranged on the drive shaft, has an inner ring and an outer ring and a retainer for retaining multiple rolling parts, and is characterized in that a protruding piece protruding radially outward is provided on the outer ring, and an abutment portion is provided on the reel body for limiting the rotation of the outer ring by abutting at two points on both sides of the protruding piece.

[0011] Since the above-mentioned spinning reel for fishing has a radially protruding protruding piece formed on the outer ring of the one-way clutch, and an abutment portion is provided on the reel body for limiting the rotation of the outer ring by abutting at two points on the two side surfaces of the protruding piece, the structure of the portion for preventing the outer ring from rotating can be simplified, thereby achieving miniaturization and lightweighting of the reel body.

[0012] According to the present invention, a spinning reel for fishing incorporating a one-way clutch can be provided with a structure capable of achieving miniaturization and weight reduction of the reel body. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is an exploded perspective view showing a first embodiment of a spinning reel for fishing according to the present invention.

[0014] Figure 2 yes Figure 1 An axial cross-sectional view of the main parts of a spinning reel for fishing is shown.

[0015] Figure 3 It is along Figure 2 Cross-sectional view along line AA.

[0016] Figure 4 It is a perspective view showing the fixed state of the one-way clutch.

[0017] Figure 5 Yes Figure 4 A perspective view showing a state in which the retainer cover member is arranged on the one-way clutch.

[0018] Figure 6 It is an exploded perspective view showing a second embodiment of a spinning reel for fishing according to the present invention.

[0019] Figure 7 It is a perspective view showing the fixed state of the one-way clutch.

[0020] Explanation of symbols

[0021] 1-Fishing spinning reel; 2-Reel body; 2C-Cylinder; 2c-Notch; 3-Rotor; 20-One-way clutch; 27-Outer ring; 27c-Protruding piece (stopper). DETAILED DESCRIPTION

[0022] Figure 1 and Figure 2 1 is a diagram showing a first embodiment of a spinning reel for fishing according to the present invention. First, the overall structure of the spinning reel for fishing will be described. In the following description, the front and rear refer to Figure 2 direction shown.

[0023] A spinning reel 1 for fishing (hereinafter referred to as a reel) according to this embodiment has a reel body 2 integrally formed with a reel foot 2A for attaching to a fishing rod. Disposed in front of the reel body 2 are a rotatably supported rotor 3 and a spool (not shown), which is supported for forward and backward movement in synchronization with the rotation of the rotor 3.

[0024] The rotor 3 includes a pair of arms 3a that rotate around the spool. A loop support member 3b, for mounting the base end of a loop 5, is rotatably supported at the tip of each arm 3a between a line reeling position and a line unreeling position. At this point, one base end of the loop 5 is attached to a line guide (line roller) 6 integrally formed with the loop support member 3b.

[0025] A handle shaft is rotatably supported within the reel body 2 via a bearing, and a handle is mounted on its protruding end. A driving force transmission mechanism 10 is provided on the handle shaft. When the handle is rotated, the driving force is transmitted to the rotor 3 to rotationally drive the rotor.

[0026] As is well known, the driving force transmission mechanism 10 comprises a drive gear rotatably mounted on the handle shaft, and a pinion 11 having a pinion tooth portion that meshes with the drive gear. The pinion 11 extends in a front-to-back direction perpendicular to the handle shaft and functions as a rotational drive unit (drive shaft). A hollow portion 11a extending axially is formed within the rotational drive unit. A spool shaft extends through the hollow portion 11a. This shaft engages with a known swing mechanism that moves the spool forward and backward when the handle is rotated, and the spool is mounted on the top end of the shaft.

[0027] The pinion gear 11 is rotatably supported on the reel body 1. Furthermore, the pinion gear 11 extends toward the spool, and the rotor 3 is integrally rotatably mounted on the top end of the pinion gear 11. A through-hole formed in a protrusion 3A formed on the center portion of the rotor 3 fits over the top end of the pinion gear 11, and the rotor 3 is secured by a tightening nut (not shown). Furthermore, a one-way clutch 20 is provided on the pinion gear 11, which serves as a reverse rotation prevention mechanism.

[0028] With this configuration, when the handle is operated to reel in the line, the rotor 3 is rotated by the driving force transmission mechanism 10, and the spool is reciprocated in the forward and backward directions by the swing mechanism and the spool shaft. As a result, the fishing line is evenly wound onto the spool through the line guide 6 of the rotating rotor 3.

[0029] Next, refer to Figures 1 to 4 The one-way clutch 20 of this embodiment will be described.

[0030] like Figure 1 As shown, a base portion 2B having a generally disc-shaped structure is provided on the spool side of the reel body 2. A cylindrical portion 2C is formed on the surface of the base portion 2B in the axial direction. The pinion gear 11 extends through the center of the cylindrical portion 2C and is rotatably supported. A one-way clutch 20 is provided in the middle of the pinion gear 11.

[0031] The pinion 11 is rotated by the driving gear by rotating the handle. The one-way clutch 20 is provided at the middle portion of the pinion 11 to prevent reverse rotation while allowing the pinion 11 to rotate in the fishing line reeling direction.

[0032] The one-way clutch 20 includes an inner ring 21, an outer ring 27, and a retainer 23 for retaining a plurality of rolling elements 25, and a cover member 23A (see FIG. Figure 5 ). These elements (or some of the elements) can be unitized in advance.

[0033] The inner ring 21 is fixed relative to the pinion 11 and functions as a drive shaft that rotates integrally with the pinion 11. Specifically, the pinion 11 has a partially non-circular cross-section. 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.

[0034] The retainer 23 is arranged radially outward of the inner ring 21 and has retaining portions 23a arranged at regular intervals in the circumferential direction. A biasing spring 24 is arranged on each retaining portion 23a. Figure 3 In the counterclockwise rotation direction; in the reverse direction), the rolling member 25 disposed between the retaining portions is forced.

[0035] The outer ring 27 is positioned radially outward from the retainer 23 and is formed into a generally annular shape. The inner circumference of the outer ring 27 is formed with a wedge region 27a that prevents the rotation of the rolling elements 25 and a free region 27b that allows the rolling elements 25 to rotate freely. Each rolling element 25 retained by the retainer 23 is constantly biased toward the wedge region by the biasing spring 24. The outer circumferential surface 27d of the outer ring 27 is circular, except for the portion where the protruding piece 27c is formed.

[0036] A protruding piece 27c is provided on a portion of the outer ring 27, protruding radially outward. This protruding piece 27c functions as a stopper to restrict the rotation of the outer ring 27. One or more protruding pieces 27c are integrally formed, protruding radially outward from the outer circumferential surface 27d of the outer ring 27. Because stress concentration at a single point can cause imbalance when a large torque is applied to the outer ring, it is preferable to provide two or more protruding pieces at equal intervals. In this embodiment, two protruding pieces 27c are provided at intervals of 180°, facing each other across the center axis X. The protruding piece 27c has a constant width in the circumferential direction, and two circumferentially opposite sides 27e and 27f function as a rotation stop.

[0037] A notch 2c is formed in the cylindrical portion 2C protruding from the reel body 2, extending radially through the circumferential wall 2a thereof. The notch 2c is formed to a size that allows the protruding piece 27c of the outer ring 27 to fit within it. By fitting the protruding piece 27c into the notch 2c and arranging the exposed surface 27g radially exposed, the outer ring 27 is fixed (rotation restricted).

[0038] The cutouts 2c only need to be formed at one or more locations on the circumferential wall 2a. However, in this embodiment, two cutouts 2c are formed at equal intervals in the circumferential direction (two locations symmetrically spaced 180° apart with respect to the axis X). In other words, the number of cutouts only needs to be the same as the number of protruding pieces on the outer ring 27.

[0039] The outside of the protruding piece 27c is exposed radially on the notch 2c portion of the cylindrical portion 2C, and can be pressed against and pinched by fingers. Therefore, the protruding piece can be easily pinched to hold the outer ring 27, thereby realizing the improvement of the assembly and disassembly workability of the one-way clutch 20.

[0040] Furthermore, the above configuration is designed so that the diameter of the circumferential wall 2a of the cylindrical portion 2C (the diameter of the outer circumferential surface of the circumferential wall) is the same as the outermost diameter of the outer ring 27 (the diameter of the exposed surface 27g of the protruding piece 27c). In this configuration, the outer ring 27 is fitted into the circumferential wall 2a with a gap between the two. This ensures rotational performance, prevents loosening, and enables radial miniaturization. The slight gap also facilitates assembly and disassembly.

[0041] The one-way clutch 20 constructed as described above is unitized and installed in the cylindrical portion 2C. Figure 5 As shown, in Figure 4 The outer ring 27 shown in FIG. 2 is provided with a cover (cover member) 23A covering the retainer 23 and the outer ring 27. The outer ring 27 is held between the retainer 23 and the cover member 23A. In addition, an anti-electrochemical corrosion plate (anti-corrosion plate) or the like may be installed on the cover member 23A. Furthermore, a limiting plate may be provided adjacent to the one-way clutch to limit the axial movement of the one-way clutch 20. Alternatively, as shown in FIG. Figure 1 and Figure 2 As shown, in order to improve the waterproof and dustproof effects of the one-way clutch 20, a magnetic sealing mechanism 50 may also be provided.

[0042] As is well known, the magnetic seal mechanism 50 comprises: annular magnetic plates (pole plates) 51, 52, which are arranged with a small gap between them and the outer peripheral surface of the drive shaft (inner ring 21); and an annular magnet 53, which is sandwiched between the magnetic plates and is configured to fill the gap between the drive shaft and the magnetic plates with a magnetic fluid (see Figure 1 、 Figure 2 ).

[0043] Furthermore, in this embodiment, a waterproof cover 60 is provided on the reel body to cover the cylindrical portion 2C and the one-way clutch 20. The waterproof cover 60 has a cylindrical portion 61 surrounding the one-way clutch 20 and a cover portion 62 for closing the opening on the spool side. The magnetic plate 51 of the magnetic seal mechanism 50 is in close contact with the inner surface of the cover portion 62.

[0044] According to the one-way clutch 20 having the above-described structure, the handle (rotor 3) can be prevented from rotating (reversing) in the fishing line releasing direction.

[0045] That is, when the operating handle is rotated in the fishing line reeling direction to rotate the driving pinion 11 (in Figure 3 When the inner ring 21 is driven in the clockwise direction (as shown in FIG. 2 ), the inner ring 21 also rotates in the same direction as the pinion 11. At this time, because the rolling elements 25 held by the retainer 23 move to the free area 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.

[0046] Conversely, when the inner ring 21 rotates reversely along with the pinion 11 (rotor 3 rotates in the line-releasing direction), the rolling member 25 held by the retainer 23 rotates counterclockwise and, through the biasing spring 24, is positioned in the wedge region 27a of the outer ring 27. This allows the rotational force of the inner ring 21 to be transmitted to the outer ring 27. Since the outer ring 27 is restricted in rotation by the protruding piece 27c, it acts as a stopper, preventing the pinion 11 and rotor 3 from rotating in reverse.

[0047] Moreover, in the above-mentioned structure, a cutout portion 2c is formed on the circumferential wall 2a of the cylindrical portion 2C on the side of the reel body, and the protruding piece 27c formed on the outer ring 27 of the one-way clutch 20 is arranged to be exposed in the radial direction, thereby preventing the outer ring 27 from rotating.

[0048] That is, since the outer ring 27 is not fixed by grooves or protrusions formed on the inner circumference of the cylindrical portion as in the prior art, the diameter of the cylindrical portion 2C can be reduced as much as possible and the wall thickness can be reduced, thereby achieving miniaturization and weight reduction of the reel body.

[0049] Furthermore, in this embodiment, the magnetic seal mechanism 50 is provided on the spool side of the one-way clutch 20, and the waterproof cover 60 is provided to cover the cylindrical portion 2C and the one-way clutch 20. This prevents the infiltration of foreign matter such as moisture and dust, thereby improving durability.

[0050] Figure 6 and Figure 7It is a diagram showing a second embodiment of the spinning reel for fishing according to the present invention.

[0051] The one-way clutch 20 of this embodiment has the same structure as the first embodiment, and protrusions 27c are formed on the outer ring 27 at intervals of 180 degrees. Figure 5 The one-way clutch retainer 23 of this embodiment may have the same structure as shown, and may be configured to include a cover member 23A and an electrochemical corrosion prevention plate.

[0052] In this embodiment, the reel body 2 is formed with an abutment portion 2E that abuts the side of the protruding piece 27c of the outer ring 27 to restrict the outer ring's rotation. The abutment portion 2E does not need to be cylindrical, as in the first embodiment; it can simply protrude axially and abut against the side of the protruding piece 27c to restrict rotation. Therefore, a single protruding piece can be provided on the outer ring, and the protruding piece can be abutted at two points on either side of the circumferential surface to restrict bidirectional rotation.

[0053] In addition, since two protrusions 27c are formed on the outer ring 27 at intervals of 180° in this embodiment, abutment portions 2E are provided on both circumferential sides of each protrusion, and are configured to abut at two points on both circumferential sides of the protrusion (side surfaces 2E′ of the abutment portion 2E).

[0054] According to such a structure, even if the cylindrical portion with the cutout portion is not provided as in the first embodiment, the one-way clutch can be fixed to rotation and lightweight and miniaturized. In addition, since there is space around the contact portion in such a structure, it is easy to install and remove the one-way clutch 20.

[0055] Furthermore, it is preferable that such abutment portion 2E is formed radially inward of the outermost diameter position of the protruding piece 27 c of the outer ring 27 so as to perform two-point abutment.

[0056] With such a configuration, the contact portion 2E can be made thinner, thereby achieving further weight reduction.

[0057] Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications are possible.

[0058] The shape of the protruding piece 27c can be appropriately deformed. For example, the surface 27g of the exposed side of the protruding piece can also protrude radially from the cylindrical portion 2C within the cutout portion 2c of the cylindrical portion 2C, or it can not protrude. Figure 7In the illustrated configuration, the protruding piece abuts against the abutment portions 2E on both circumferential sides. However, a recess may be pre-formed in the central portion of the protruding piece along the axial direction, and the abutment portions may be formed to fit into this recess. Alternatively, the reel body may be provided with a semi-I-shaped abutment portion extending in the axial direction to abut against both sides of the protruding piece 27c.

[0059] Furthermore, although in the above-mentioned embodiment, the retainer 23 is fixed to prevent the reversal of the rotor, the following structure may also be adopted, that is, an operating component protruding to the outside of the reel body is provided, the retainer is rotated by operating the operating component, the rolling component is located in the free area, and the reversal of the rotor is allowed.

Claims

1. A spinning reel for fishing, comprising: a drive shaft that is rotationally driven by rotating a handle rotatably supported on a reel body; a one-way clutch disposed on the drive shaft and having an inner race, an outer race, and a retainer for retaining a plurality of rolling members; and a cylindrical portion formed on the reel body for accommodating the one-way clutch, characterized in that: The outer ring is formed integrally with a protruding piece protruding radially outward on the outer circumferential surface of the outer ring, and is formed with a cutout portion penetrating the circumferential wall of the cylindrical portion in the radial direction. The protruding piece of the outer ring is arranged to be exposed in the radial direction in the cutout portion so as to prevent the outer ring from rotating.

2. The spinning reel for fishing according to claim 1, characterized in that The cutouts are formed at two or more locations at equal intervals in the circumferential direction of the circumferential wall, and the protruding pieces are provided in the same number as the cutouts.

3. The spinning reel for fishing 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 spinning reel for fishing according to claim 1 or 2, characterized in that: A waterproof cover is provided to cover the cylindrical portion and the one-way clutch.

5. A spinning reel for fishing, comprising: a drive shaft that is rotationally driven by rotating a handle rotatably supported on a reel body; and a one-way clutch disposed on the drive shaft and having an inner race, an outer race, and a retainer for retaining a plurality of rolling elements, characterized in that: The outer ring is formed integrally with a protruding piece protruding radially outward on the outer circumference of the outer ring. The reel body is provided with a contact portion that restricts rotation of the outer ring by contacting at two points on both side surfaces of the protruding piece.

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

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