Spinning reels for fishing

Abstract

The present invention relates to a spinning-type fishing reel incorporating a one-way clutch, which can achieve miniaturization and lightweighting of the reel body, while also improving durability. Specifically, the spinning-type fishing reel of the present invention comprises: a pinion gear that is rotationally driven by rotating a handle rotatably supported on the reel body; a rotor having a protrusion secured to the pinion gear by a fixing structure; and a one-way clutch disposed on the pinion gear and comprising an inner ring, an outer ring, and a retainer for retaining a plurality of rolling elements. The fixing structure is characterized in that the protrusion is covered by a component separate from the inner ring, comprising: a cylindrical component having a first abutment portion that abuts the rotor; and a second abutment portion located radially inward of the first abutment portion and abutting the tip of the inner ring.

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 anti-reverse mechanism is composed of a one-way clutch, which comprises: an inner ring, which is locked and engaged on a pinion, and the pinion rotates as a whole through the rotation of the handle; a retainer, which is arranged radially outward of the inner ring and is used to retain multiple rolling parts; and an outer ring, which is arranged radially outward of the retainer.

[0004] Furthermore, the rotor is mounted so as to rotate integrally with the pinion. Patent Document 1, mentioned above, has a configuration in which a recess extending axially in the circumferential direction is formed on the tip side of the inner ring of the one-way clutch. A protrusion formed on the center portion of the rotor is fitted into the recess and seated therein, and a nut is tightened from the spool side, thereby enabling the rotor and pinion to rotate integrally.

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Application Laid-Open No. 2019-97431 Summary of the Invention

[0007] Miniaturizing the aforementioned one-way clutch requires reducing the inner ring diameter. For example, if the existing inner ring is φ10 and the diameter of the rotor protrusion is reduced to φ9 to miniaturize the one-way clutch, maintaining the same diameter, the aforementioned recessed portion will become thinner, making it difficult to achieve the strength needed to fit and secure the protrusion. Therefore, while it is possible to avoid forming the recess at the tip of the inner ring and instead have the tip of the rotor protrusion abut against the tip of the inner ring, this would increase the distance from the load-applied position (the line roller), resulting in a greater torque. Consequently, as described later, the rotor protrusion could buckle at the abutting portion.

[0008] The present invention is made with the above-mentioned problems in mind, and the technical problem to be solved is to provide a structure on a spinning-type fishing reel equipped with a one-way clutch, which can achieve miniaturization and lightness of the reel body and improve durability.

[0009] In order to achieve the above-mentioned purpose, 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; a rotor, which has a protrusion fixed to the drive shaft by a fixing structure; and 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 is characterized in that the fixing structure covers the protrusion with a component different from the inner ring, and comprises: a cylindrical component, which has a first abutment portion abutting the rotor; and a second abutment portion, which is located radially inner than the first abutment portion and abuts the top end of the inner ring.

[0010] According to the spinning fishing reel constructed as described above, since the structure for securing the rotor protrusion to the drive shaft does not employ a structure in which the rotor protrusion is covered by the inner ring of the one-way clutch, the inner ring diameter can be reduced, thereby enabling the one-way clutch to be made smaller and lighter. Furthermore, even when a large load (torque) acts on the fishing line and on the rotor protrusion via the line roller, the load is absorbed by the first abutment portion of the cylindrical member, which is a separate component from the inner ring and located near the line roller. This prevents deformation (buckling) of the protrusion due to repeated loads and improves durability.

[0011] According to the present invention, a spinning reel for fishing incorporating a one-way clutch can be provided, in which a structure can be achieved that enables miniaturization and weight reduction of the reel body and improves durability. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is an exploded perspective view showing one embodiment of a spinning reel for fishing according to the present invention.

[0013] Figure 2 Yes Figure 1 A perspective view of the structure of the rotor portion of a spinning reel for fishing is shown.

[0014] Figure 3 Yes Figure 1 The cross-sectional view of the main internal structure of the spinning reel for fishing shown shows an example with a cylindrical member (upper half: after the countermeasure) and an example without the cylindrical member (lower half: before the countermeasure) in one drawing.

[0015] Figure 4 Indicates that there is Figure 1 The main internal structure of the spinning reel for fishing is a cross-sectional view showing a modified example of the cylindrical member provided on the protrusion of the rotor.

[0016] Explanation of symbols

[0017] 1-Fishing spinning reel; 2-Reel body; 2C-Cylinder; 3-Rotor; 20-One-way clutch; 27-Outer ring; 70-Fixing structure; 71, 71A-Cylindrical components; 71a-First contact portion; 71b-Second contact portion. DETAILED DESCRIPTION

[0018] Figures 1 to 3 FIG1 is a diagram showing an 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 fingers are Figure 2 direction shown.

[0019] 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.

[0020] 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.

[0021] The handle shaft is rotatably supported by a bearing within the reel body 2, and a handle is mounted on its protruding end. A driving force transmission mechanism is provided on the handle shaft, which transmits the driving force to the rotor 3 when the handle is rotated, thereby rotating the rotor.

[0022] As is well known, the driving force transmission mechanism 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.

[0023] 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 tip of the pinion gear 11. A through-hole 3c formed in a protrusion 3A formed on the center portion of the rotor 3 fits over the tip of the pinion gear 11. The rotor 3 is secured by tightening a nut (not shown) from the front toward the rear. Furthermore, a one-way clutch 20, which serves as a reverse rotation prevention mechanism, is provided on the pinion gear 11.

[0024] With this configuration, when the handle is operated to reel in the line, the drive force transmission mechanism rotates the rotor 3, 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.

[0025] The rotor 3 has a cylindrical portion 30 formed between the pair of arm portions 3a. The front side of the cylindrical portion 30 is closed by a front wall 32, and the rear end is open in a generally circular shape. An annular portion 33 is integrally formed at the rear end of the cylindrical portion 30. This annular portion 33 protrudes radially in an arc shape, generally coplanar, and forms the rear end of the rotor. This annular portion 33 connects the bases of the pair of arm portions 3a, forming an integral part of the pair of arm portions 3a.

[0026] The front wall portion 32 is composed of a bridge portion 32A, a flat surface with a predetermined width that radially connects the open front edge of the cylindrical portion 30, and a cap member 32B, which is mounted on the surface of the bridge portion 32A. The cap member 32B comprises a circumferential wall 32a, an annular flange portion 32b that protrudes radially outward from the upper opening edge of the circumferential wall, and a bottom portion 32c with a generally rectangular opening 32d formed in the center. The circumferential wall 32a includes a pair of arcuately oriented walls 32a' at two opposing locations. To facilitate mounting on the bridge portion 32A, the bottom portion 32c has four (any number of locations is acceptable, and the locations are not limited) protrusions 32e formed on the back surface.

[0027] To achieve weight reduction, an opening 30A is formed in the cylindrical portion 30. The opening in this embodiment is formed in an arc shape along the circumferential direction in the region from the upper side of the cylindrical portion 30 to the annular portion 33. By forming the opening 30A in the cylindrical portion 30, both sides of the front side of the cylindrical portion 30 are connected by the semi-annular frame 30a.

[0028] A protrusion 3A with the through-hole 3c is formed in the center of the bridge portion 32A, projecting toward the reel body. As described above, the nut secured to the pinion 11 is mounted on this portion from the front toward the rear. Furthermore, four holes 3f (any number of holes is acceptable, and the locations are not limited) are formed on the bridge portion 32A, corresponding to the protrusions 32e of the cap member 32B, to receive the protrusions. The bridge portion 32A bridges the front end of the cylindrical portion 30 between the wrist portions 3a, with spaces formed on both sides between the semi-annular frame 30a and the bridge portion 32A.

[0029] With respect to such a bridge portion 32A, by bringing the bottom 32c of the cap member 32B into contact with the surface of the bridge portion and welding the protrusion 32e protruding from the hole 3f, the cap member 32B can be mounted on the bridge portion 32A and together with the bridge portion 32A, form the front wall portion 32. In this state, the space between the semi-annular frame 30a on both sides of the bridge portion 32A is closed by the bottom 32c of the cap member 32B and the arc wall 32a', thereby effectively reducing the weight of the rotor. In addition, although the protrusion 32e is Figure 1 It protrudes in the middle, but can also be flattened during welding.

[0030] Next, the one-way clutch 20 described above will be described.

[0031] 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.

[0032] The pinion gear 11 is rotationally driven via the drive gear by the rotation of the handle, and the one-way clutch 20 has a function of preventing reverse rotation while allowing the pinion gear 11 to rotate in the fishing line winding direction.

[0033] As is well known, the one-way clutch 20 includes an inner ring 21 , an outer ring 27 , and a cage 23 for retaining a plurality of rolling elements 25 . These elements (or some of them) may be pre-unitized.

[0034] The inner ring 21 is fixed relative to the pinion 11. Specifically, the pinion 11 has a partially non-circular cross section, and the inner ring 21 can rotate integrally with the pinion 11 by fitting the non-circular portion of the inner ring 21 into the non-circular portion.

[0035] The retainer 23 is positioned radially outward of the inner ring 21 and retains a plurality of rolling elements 25 arranged circumferentially. Furthermore, the inner circumference of the outer ring 27 is formed with a wedge region that prevents the rotation of the rolling elements 25, and a free region that allows the rolling elements 25 to rotate freely. Each rolling element is constantly biased toward the wedge region by a biasing spring.

[0036] A protruding piece 27a is provided on a portion of the outer ring 27, protruding radially outward. These protruding pieces function as stoppers to restrict the rotation of the outer ring 27. In this embodiment, a pair of protruding pieces are provided 180° apart. Furthermore, a notch extending radially through the cylindrical portion 2C protruding from the reel body 2 is formed. This notch is formed to allow the protruding piece 27a of the outer ring 27 to fit within it. By fitting the protruding piece 27a into this notch, the outer ring 27 is secured (rotation is restricted).

[0037] The one-way clutch 20 constructed as described above is unitized and installed in the cylindrical portion 2C. At this time, a cover member of the retainer 23 or an anti-electrochemical corrosion plate (anti-corrosion plate) may be installed on the surface portion of the outer ring 27. In addition, 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 3 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.

[0038] As is well known, the magnetic sealing mechanism 50 comprises: annular magnetic plates (pole plates) 51, 52, which are arranged to have a small gap between them and the outer peripheral surface of the inner ring 21; and an annular magnet 53, which is clamped between the magnetic plates and is constructed so that the gap between the inner ring 21 and the magnetic plates 51, 52 is filled with magnetic fluid.

[0039] Such pole plates 51, 52 and magnet 53 may be unitized into a magnet assembly, and may be fixed to the cylindrical portion 2C of the reel body, or incorporated into a waterproof cover 60 to be described later.

[0040] 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.

[0041] 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.

[0042] Specifically, when the operating handle is rotated in the line reeling direction to rotate and drive pinion 11, inner ring 21 also rotates in the same direction as pinion 11. At this point, rolling elements 25, held by retainer 23, move into the free area of ​​outer ring 27. The rotational force of inner ring 21 is not transmitted to outer ring 27, allowing rotor 3 to rotate unimpeded along with pinion 11.

[0043] Conversely, when the inner ring 21 and the pinion 11 rotate in the reverse direction (rotor 3 rotates in the line-releasing direction), the rolling element 25, held by the retainer 23, is positioned in the wedge region of the outer ring 27 by the biasing spring, transmitting the rotational force of the inner ring 21 to the outer ring 27. Since the outer ring 27 is restricted in rotation by the protruding piece 27a, it acts as a stopper, preventing the pinion 11 and rotor 3 from rotating in the reverse direction.

[0044] Because the outer ring 27 is not secured against rotation by grooves or protrusions formed on the inner circumference of the cylindrical portion, as is conventional practice, the diameter of the one-way clutch 20 can be minimized, contributing to a more compact and lightweight reel. Consequently, the inner ring 21 can also be miniaturized, allowing, for example, a diameter of 9 to be used instead of the conventional 10-diameter inner ring.

[0045] When the inner ring 21 is reduced in diameter in this manner, in the present embodiment, a fixing structure 70 for fixing the protrusion 3A of the rotor 3 to the pinion gear is configured as follows.

[0046] The fixing structure 70 does not embed the rotor into the inner ring 21 of the one-way clutch. Instead, it is provided with a component separate from the inner ring 21 to prevent the protrusion 3A from contacting the inner ring 21. Specifically, the fixing structure 70 includes a cylindrical member 71 that covers the outer circumference of the protrusion 3A of the rotor 3 and has a first abutment portion 71a that abuts the rotor axially; and a second abutment portion 71b located radially inward of the first abutment portion 71a and abuts the tip of the inner ring 21.

[0047] In this embodiment, the cylindrical member 71 is integrally formed with the second abutment portion 71b. To achieve a smaller diameter, the reel body side of the cylindrical member 71 is integrally formed into a roughly hat-shaped shape, with the outer circumference curved radially inward at approximately 90 degrees. Specifically, the reduced-diameter portion is sandwiched between the reel body-side end face 3A1 of the protrusion 3A and the rotor-side end face 21A1 of the inner ring 21, with the second abutment portion 71b abutting the end face 21A1 of the inner ring 21. Consequently, the tip of the inner ring 21 remains non-contacting the protrusion 3A. Furthermore, the first abutment portion 71a of the cylindrical member 71 abuts and rests on the step 3A2 formed radially outward of the protrusion 3A.

[0048] This eliminates the need for a fixing structure that uses a recessed portion on the end surface of the reduced-diameter inner ring 21 to accommodate the conventional protrusion 3A. This prevents deformation of the inner ring 21, thereby maintaining the durability of the one-way clutch. Furthermore, this allows the inner ring 21 to have a smaller diameter, contributing to a smaller and lighter reel body. Furthermore, since the first and second abutment portions 71a, 71b are integrally formed on the cylindrical member 71, the cylindrical member can be easily installed.

[0049] Furthermore, according to the aforementioned fixing structure 70, even when a large load acts on the fishing line and a large load (torque) also acts on the protrusion 3A side of the rotor 3 via the line roller 6, this load (load acting in the axial direction) is absorbed by the step 3A2 of the first abutment portion 71a of the cylindrical member 71, which is a separate component from the inner ring 21 and located near the line roller 6. This suppresses deformation of the protrusion 3A due to repeated loads. Specifically, the protrusion 3A rests on the first abutment portion 71a formed on the radially outer step 3A2. Since a large load (torque) does not act on the second abutment portion 71b, which is farther from the line roller 6, buckling of the end region of the rotor protrusion 3A is eliminated, thereby improving durability.

[0050] exist Figure 3 In the figure, the upper half, with the center axis of pinion 11 as the boundary, shows an example in which cylindrical member 71 is installed (after the countermeasures are taken), while the lower half shows an example in which such a cylindrical member is not installed (before the countermeasures are taken). In the lower half, the end surface of inner ring 21 does not have a recessed portion for fitting protrusion 3A of the rotor. Instead, the end surface (3A1′) of protrusion 3A is in contact with the end surface of inner ring 21.

[0051] In the structure shown in the lower half, when a large load is applied via the wire roller 6, the end surface 3A1′ of the protrusion 3A is likely to buckle, reducing the durability of the rotor 3 and also the durability of the inner ring 21 that contacts the end surface 3A1′. In this embodiment, as in the structure shown in the upper half, a cylindrical member 71 is provided to cover the protrusion 3A, and the load is applied to the first abutment portion 71a via the step 3A2 near the wire roller 6. This prevents the protrusion 3A from buckling, thereby improving durability.

[0052] Although the cylindrical member 71 is formed integrally with the first contact portion 71a and the second contact portion 71b in the above embodiment, it may be formed as a separate body. Figure 4As shown, the second contact portion 71 b ′ is a member different from the cylindrical member 71A and may be formed of a disk member (washer) interposed between the inner ring 21 and the protrusion 3A.

[0053] In this way, since the second abutment portion 71b is a different component, the same function and effect as the above-mentioned embodiment can be obtained, and there is no need to process the cylindrical component into a semi-I shape (only using a cylindrical component and using a gasket instead of the second abutment portion), the processing cost can be reduced.

[0054] In the above-mentioned structure, the cylindrical members 71 and 71A can also be made of non-magnetic materials such as SUS, aluminum, and hard resin. By using such materials to form the cylindrical members, when the magnetic seal mechanism 50 is provided on the inner ring portion 21, it is possible to prevent the magnetic fluid from being attracted and maintain the sealing function.

[0055] 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.

[0056] The present invention is characterized by utilizing cylindrical members (collars) 71, 71A to absorb the load acting on the fixed portion of the rotor, rather than forming a recessed portion at the end of the inner race 21 of the one-way clutch 20. Other configurations are subject to modification. For example, the configurations of the rotor 3, the one-way clutch 20, and the magnetic seal mechanism 50 are not limited to those shown in the figures.

Claims

1. A spinning reel for fishing, comprising: a drive shaft that is rotationally driven by a rotational operation of a handle rotatably supported on the reel body; a rotor having a protrusion fixed to the drive shaft via a fixing structure; and a one-way clutch, which is arranged on the drive shaft and includes an inner ring, an outer ring, and a retainer for retaining a plurality of rolling elements, and is characterized in that: The fixing structure covers the protrusion with a component different from the inner ring, and comprises: a cylindrical component having a first abutting portion that abuts against the rotor; and a second abutting portion that is located radially inward of the first abutting portion and abuts against the top end of the inner ring. The protrusion includes: an end surface formed on the side of the reel body to receive the load; and a step portion formed on the radially outer side of the protrusion to receive the load. The cylindrical member is a non-magnetic body, and a magnetic seal mechanism including a first magnetic plate and a second magnetic plate is provided on the inner ring. A magnetic fluid is filled between the inner ring and the first and second magnetic plates.

2. The spinning reel for fishing according to claim 1, characterized in that The first contact portion and the second contact portion of the cylindrical member are integrally formed.

3. The spinning reel for fishing according to claim 1, wherein The second contact portion is a member different from the cylindrical member and is composed of a disk member interposed between the inner ring and the protrusion.

4. The spinning reel for fishing according to any one of claims 1 to 3, characterized in that: The first contact portion of the cylindrical member contacts the rotor, so that the tip of the inner ring is maintained in a non-contact state with the protrusion.

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