Fishing spinning reel

Abstract

To provide a spinning reel for fishing capable of preventing burrs, foreign matters, etc., from adhering to a surface of a spool shaft reciprocating back and forth.SOLUTION: A spinning reel 1 for fishing includes a pinion gear 8 for stopping whirling of a rotor 3 so as to allow it to integrally rotate with the pinion gear, a spool shaft 20 to be inserted into the inside of the pinion gear so as to move forward and backward, and a spool 4 provided at a front end of the spool shaft and made to move forward and backward together with the spool shaft 20 by rotating operation of a handle. The pinion gear 8 and the spool shaft 20 are disposed so as to form a gap therebetween, where recesses 21 are continuously formed on the surface of the spool shaft 20 across 360° as viewed from an axial direction.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a fishing spinning reel that provides good sliding guidance for a spool shaft that is inserted into a pinion gear. [Background technology]

[0002] A fishing spinning reel includes a pinion gear that is rotated by rotating the handle, a rotor that is fixed to the outer periphery of the pinion gear so as to rotate together with the pinion gear, and a spool provided at the front of a spool shaft that is inserted inside the pinion gear so as to be movable back and forth. When the handle of such a fishing spinning reel is rotated, the pinion gear is rotated and the spool shaft slides axially along the inner surface of the pinion gear.

[0003] As described above, since the spool shaft on which the spool is provided is arranged to move back and forth inside the pinion gear, it is preferable that good sliding guidance be obtained between the two. For example, as disclosed in Patent Document 1, it is known that the pinion gear is supported so that a gap is generated between the outer surface of the spool shaft and the inner surface of the pinion gear so that the spool shaft can slide stably inside the pinion gear, thereby improving the sliding properties of the spool shaft. Patent Document 1 also discloses a configuration in which a recess (microhole) for oil storage is formed on the surface of the spool shaft, thereby reducing sliding resistance while maintaining the applied oil. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Publication No. 2021-132556 Summary of the Invention [Problem to be solved by the invention]

[0005] In the above-mentioned configuration, the surface of the spool shaft is formed with small holes and oil is stored in the holes, improving lubrication, but if burrs or foreign matter get mixed in between the spool shaft and the pinion gear, the surface of the spool shaft will be scratched. In other words, the small holes only store oil, and if burrs or foreign matter continue to exist on the surface part where the small holes are not formed, this will cause damage to the surface of the spool shaft. In addition, if such burrs or foreign matter remain on the surface of the spool shaft, they can cause defects such as abnormal noise, rough rotation, and heavy rotation. Thus, although the conventional technology has the idea of ​​storing oil to improve sliding properties, it does not take into consideration the problems caused by burrs and foreign matter attached to the surface of the spool shaft.

[0006] The present invention has been made in response to the above-mentioned problems, and has an object to provide a fishing spinning reel that prevents burrs, foreign matter, etc. from adhering to the surface of the spool shaft that reciprocates back and forth. [Means for solving the problem]

[0007] In order to achieve the above-mentioned object, the present invention provides a fishing spinning reel comprising: a pinion gear that is rotationally driven by rotation of a handle attached to a reel body, and which prevents a rotor having a fishing line guide portion from rotating so as to rotate integrally therewith; a spool shaft that is inserted inside the pinion gear so as to be able to move back and forth; and a spool that is attached to the front end of the spool shaft and is moved back and forth together with the spool shaft by rotation of the handle, wherein a fishing line is wound onto the spool that is moved back and forth via the fishing line guide portion of the rotating rotor by rotation of the handle; the pinion gear and the spool shaft are arranged so that a gap G is formed between them, and the surface of the spool shaft is formed with an uninterrupted recess over 360° when viewed from the axial direction.

[0008] In the fishing spinning reel having the above-mentioned configuration, the spool shaft moves back and forth inside the rotating pinion gear during fishing line winding operation. The pinion gear and the spool shaft are arranged so that a gap G is created between them, so that the spool shaft slides smoothly and moves back and forth stably. In this case, burrs, foreign matter, etc. may get mixed in the gap G between them, but by forming a recess on the surface of the spool shaft continuously over 360° as viewed from the axial direction, the burrs, foreign matter, etc. are guided and reliably guided and trapped in the recess when the spool shaft moves back and forth. As a result, burrs, foreign matter, etc. do not adhere to the surface of the spool shaft, and defects such as abnormal noise, rough rotation, and heavy rotation are less likely to occur. The recess in the present invention includes a structure that is recessed in a specific shape and a structure that extends in a groove shape. Effect of the Invention

[0009] According to the present invention, a fishing spinning reel can be obtained in which burrs, foreign matter, etc. do not adhere to the surface of the spool shaft that reciprocates back and forth. [Brief description of the drawings]

[0010] [Figure 1] 1 is a side view showing an example of a fishing spinning reel according to the present invention, illustrating an internal configuration. FIG. [Diagram 2] An enlarged view of the main parts of Figure 1. [Diagram 3] FIG. 2 is an enlarged view of the portion where the pinion gear and the spool shaft are inserted shown in FIG. 1. [Figure 4] (a) is an enlarged view of the spool shaft, and (b) is a cross-sectional view taken along line AA in (a). [Diagram 5] 6(a) to 6(d) are diagrams showing modified examples of recesses formed on the surface of a spool shaft. [Figure 6] 4(a) to 4(c) are diagrams showing configuration examples in which the recesses are formed as depressions. [Figure 7] 4(a) to 4(c) are diagrams showing configuration examples in which the recesses are formed as grooves. [Figure 8]FIG. 4A is a cross-sectional view taken along the axial direction, showing an example of a recess; FIG. 4B is a cross-sectional view taken along the axial direction, showing an example of a recess; FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a fishing spinning reel according to the present invention will be specifically described with reference to the accompanying drawings. First, the structure of a fishing spinning reel will be described with reference to FIGS.

[0012] The reel body 1A of the fishing spinning reel (hereinafter referred to as the reel) 1 according to this embodiment has reel legs 2 formed integrally therewith to be attached to a fishing rod, and in front of this are arranged a rotatably supported rotor 3 and a spool 4 supported so as to be movable back and forth in synchronization with the rotational motion of the rotor 3.

[0013] The rotor 3 has a pair of arms 3a (only one of which is shown in FIG. 1) that rotate around the spool 4, and a bail support member 3c, to which a base end of a bail 3b is attached, is supported at the front end of each arm 3a so as to be rotatable between a line winding position and a line releasing position. One base end of the bail 3b is attached to a line guide 3d that is integral with the bail support member 3c.

[0014] A handle shaft 5 is rotatably supported within the reel body 1, and a handle 6 is attached to its protruding end. A drive mechanism 10 is engaged with the handle shaft 5, and this drive mechanism 10 includes a drive gear 7 mounted on the handle shaft 5 so as to be rotatable integrally therewith, and a pinion gear 8 having teeth 8a that mesh with the drive gear 7, extending in a direction perpendicular to the handle shaft 5, and having an axially extending hollow portion formed therein.

[0015] The pinion gear 8 is rotatably supported within the reel body 1 by a pair of bearings 9a, 9b, the front and rear sides of which are fitted into supports of the reel body 1A. The pinion gear 8 also extends towards the spool 4, and the rotor 3 is fitted into the tip of the pinion gear 8 so as to be non-rotatable, and is attached via a tightening nut 12 so as to be rotatable together with the rotor 3.

[0016] A known one-way clutch 15 constituting a reverse rotation prevention mechanism is attached to the pinion gear 8 on the front side of the bearing 9b disposed in front of the toothed portion 8a. As is known, the one-way clutch 15 includes an inner ring 15a, an outer ring 15b, a plurality of rolling members 15c held between the inner ring 15a and the outer ring 15b, and a retainer 15d for holding the rolling members 15c. The one-way clutch 15 is engaged with the retainer 15d, and is actuated by rotating a switching operation lever 16 provided on the outside of the reel body 1A, thereby preventing the rotation of the handle 6 (rotor 3) in the fishing line releasing direction (reverse rotation).

[0017] A spool shaft 20, which extends in a direction perpendicular to the handle shaft 5 and has a spool 4 attached to its tip end, is inserted into a hollow portion (hollow portion formed by the inner peripheral surface 8A of the pinion gear 8) formed inside the pinion gear 8 so as to be capable of reciprocating in the axial direction. A known spool reciprocating device 40 for reciprocating the spool 4 (spool shaft 20) back and forth is engaged with the rear end of the spool shaft 20.

[0018] In a reel having such a configuration, when a winding operation is performed using the handle 6, the rotor 3 is rotated via the drive mechanism 10 and the spool 4 is reciprocated back and forth via the spool reciprocating device 40, so that the fishing line is evenly wound around the winding body 4a of the spool 4 via the line guide portion 3d.

[0019] Next, the pinion gear 8 that is rotated and the spool shaft 20 that is moved back and forth inside the pinion gear 8 will be described with reference to Figs.

[0020] The front part of the pinion gear 8 has a non-circular part formed into an oval cross section or the like so as to fit the rotor 3 to prevent rotation, and a male screw part is formed on the outer periphery of the non-circular part into which the tightening nut 12 is screwed. A through hole 3f is formed in the central part (central base part 3A) of the rotor 3 so as to fit the non-circular part of the pinion gear 8 to prevent rotation, and the rotor 3 is fixed to the pinion gear 8 by inserting the pinion gear 8 into the through hole 3f and tightening the nut 12. That is, the through hole 3f formed in the central base part 3A of the rotor 3 is fitted into the tip side of the pinion gear 8, and the rotor 3 is positioned in a state where it is abutted against the inner ring 15a of the one-way clutch 15, and the rotor 3 is fixed by tightening the nut 12 in this state.

[0021] The spool shaft 20, which is inserted into a hollow portion formed inside the pinion gear 8, is supported so as to avoid contact with the inner peripheral surface 8A of the pinion gear 8 as much as possible in order to reduce sliding resistance. In this embodiment, the spool shaft 20 is supported in a middle region of the pinion gear 8 so as to be in a non-contact state (a state in which a gap G is generated between the inner peripheral surface 8A of the pinion gear 8 and the outer peripheral surface 20A of the spool shaft 20).

[0022] Specifically, the tip end of the spool shaft 20 is supported at a certain area in the axial direction by a support member 30 press-fitted into the tip end of the pinion gear 8. The rear end of the spool shaft 20 is supported at a certain area by contacting a collar 1B that is disposed in the frame 1b of the reel body 1A and rotatably supports the bearing 9a. As a result, the spool shaft 20 is supported such that a gap G is generated between the support member 30 and the inner peripheral surface of the pinion gear 8 and the collar 1B. The pinion gear 8 and the support structure for the spool shaft 20 inserted into the pinion gear 8 are not particularly limited. For example, small diameter portions may be formed on the front and rear ends of the pinion gear 8, and the spool shaft 20 may be supported by these portions, forming a gap G between the two support portions, or other suitable modifications may be made. Also, the spool shaft 20 may be supported without forming such a gap G.

[0023] A recess 21 is formed on the surface of the spool shaft 20. This recess is formed continuously over 360° when viewed from the axial direction. The recess 21 in this embodiment is configured as a substantially elliptical depression with a major axis perpendicular to the axial direction of the spool shaft, and is formed regularly along the circumferential direction while being shifted in the axial direction, as shown in Figures 3 and 4(a).

[0024] The recesses 21 thus formed adjacent to each other in the axial direction are arranged so as to partially overlap when viewed from the axial direction. As a result, as shown in FIG. 4(b), when the spool shaft 20 is viewed from the axial direction, the recesses are formed without interruption over 360°.

[0025] According to the support structure for the spool shaft 20 as described above, since it is arranged so that a gap G is created between the inner surface of the pinion gear 8, the sliding property of the spool shaft 20 can be improved and the spool shaft 20 can move back and forth stably.

[0026] Also, burrs, foreign matter, etc. may get caught between the pinion gear 8 and the spool shaft 20, but because the recesses 21 are formed continuously over 360° when viewed from the axial direction, the burrs, foreign matter, etc. are guided along the surface of the spool shaft by the back and forth movement of the spool shaft 20 and the rotation of the pinion gear 8, and can be reliably guided and trapped in one of the recesses formed continuously over 360°. As a result, burrs, foreign matter, etc. do not remain on the surface of the spool shaft 20, abnormal noise and rough rotation do not occur, and defects such as heavy rotation are less likely to occur.

[0027] In addition, because burrs, foreign matter, etc. are reliably guided into the recess, there is no need to machine the inside of pinion gear 8 with high precision or to perform deburring and finishing, etc., which makes it possible to reduce the machining costs of the pinion gear. Also, there is no need to configure the support structure for the pinion gear and spool shaft with high precision to prevent burrs, etc., so the main body does not become larger or heavier, and costs can be reduced.

[0028] The recess 21 can be formed by cutting, forging, heading, rolling, etc. In particular, by forming it by heading or rolling, the surface of the spool shaft is work-hardened, and durability can be improved.

[0029] In the above-mentioned positional relationship between the pinion gear and the spool shaft, if the depth of the recess 21 (in a configuration in which the depth varies, the depth at the deepest position) is D, it is preferable to configure so that G>D. By making the gap G larger than the depth D of the recess in this way, it becomes unnecessary to interpose a separate high-precision support member between the inner surface of the pinion gear, and it is possible to reduce the size and weight of the main body as well as the cost. In addition, by making the gap G larger, it is possible to reduce the intrusion of burrs, etc., thereby preventing scratches on the surface of the spool shaft and the inner surface of the pinion gear and reducing the need for repairs.

[0030] The recesses 21 formed on the surface of the spool shaft can be modified as appropriate in terms of shape, arrangement, arrangement pattern, etc. 5(a) to (d) are diagrams showing various configuration examples of recesses (illustrated as depressions) formed on the surface of a spool shaft.

[0031] The recesses formed on the surface of the spool shaft 20 may be regularly scattered as shown in each example in Figure 5, or may be randomly scattered, so long as they are formed without interruption over 360° when viewed from the axial direction.

[0032] The configuration shown in FIG. 5(a) shows an example in which a large number of circular recesses 22A are arranged in a row inclined to the axial direction, and are formed to be parallel. The configuration shown in FIG. 5(b) shows an example in which a large number of elliptical recesses 22B are arranged in a circumferential direction, and are formed to be adjacent to each other in the axial direction. The configuration shown in FIG. 5(c) shows an example in which a large number of elliptical recesses 22C are arranged in a circumferential direction, and are formed so that the directions of the ellipses adjacent to each other in the axial direction are opposite to each other. The configuration shown in FIG. 5(d) shows an example in which a large number of circular recesses 22D are arranged in a row in the circumferential direction, and are formed to be parallel to each other.

[0033] All of the recesses 22A to 22D are regularly formed in the same pattern, which makes processing easier and allows the processing cost to be reduced. The recesses may be formed by, for example, shot blasting or barrel polishing, but depending on the surface roughness, minute burrs or foreign matter may get caught or get stuck between adjacent recesses, making it impossible to completely confine them within the recesses. For this reason, it is preferable to form the recesses intermittently, with the outer surface of the spool shaft being exposed flat between adjacent recesses.

[0034] It is preferable that the recesses formed on the surface of the spool shaft are not formed at opposing positions (diametric positions) on the front and back sides. In other words, by not forming recesses at opposing positions, it is possible to prevent a decrease in the strength of the spool shaft.

[0035] The recess 21 may be formed over the entire axial range of the spool shaft, or may be formed only in a part of it. For example, by forming the recess within the range where the spool shaft 20 slides against the support member 30 and collar 1B (the axial range where the gap G is formed), burrs, foreign matter, etc. can be reliably guided into the recess 21 when the spool shaft 20 reciprocates. Furthermore, by forming the recess in a part of the axial direction, the processing time can be shortened, and there is no need to perform special treatment on the surface of the spool shaft, which allows the spool shaft to be made lighter and less expensive.

[0036] FIG. 6 is a diagram showing an example of the shape of the recess 21 formed as a depression. As described above, the shape of the recess can be appropriately modified, and for example, the opening shape may be rectangular (polygonal) as in the recess 21E shown in FIG. 6(a). However, such a shape is likely to cause burrs at the edge portion, so it is preferable to use a shape surrounded by curved edges, such as an elliptical shape 21B (22C) or a circular shape 22A (22D) that is curved (R-shaped) so that the edge portion does not become a corner, as shown in FIG. 6(b) and (c). In addition, by using such a shape, burrs are less likely to occur, and there is no need to take measures such as repairs.

[0037] The recessed portion may be configured as a groove extending along the surface of the spool shaft 20 other than a depression. 7(a) to (c) are diagrams showing examples of shapes of the recesses 21 formed as grooves.

[0038] The configuration shown in Fig. 7(a) shows an example in which groove 23A is formed to be inclined in a dogleg shape with respect to the axial direction, and multiple grooves are formed in parallel along the axial direction. The configuration shown in Fig. 7(b) shows an example in which multiple grooves 23B are formed in parallel along a circumference in a direction perpendicular to the axial direction. Each groove 23B has multiple branch grooves 23a, 23b that extend in the inclined direction and terminate, making it easier to guide burrs, foreign matter, etc. that move in the axial direction with the reciprocating motion of the spool shaft 20 into groove 23B. The configuration shown in Fig. 7(c) shows an example in which a spiral groove 23C is formed.

[0039] By configuring the recesses formed on the surface of the spool shaft with the above-mentioned grooves 23A, 23B, and 23C, it becomes possible to reliably capture burrs and foreign matter and guide them into the grooves. In other words, since burrs and foreign matter do not adhere to or remain on the surface of the spool shaft 20, abnormal noise and rough rotation are prevented, and defects such as heavy rotation are less likely to occur.

[0040] The recess 21 may be formed so that the depth D varies depending on the position where it is formed on the surface of the spool shaft. For example, as shown in FIG. 8(a) or FIG. 8(b), by configuring it to have a deep portion 21a and a shallow portion 21b, when it is formed by heading or rolling, excess material 25 is formed protruding at the boundary portion between the surface and the groove during processing. When such excess material 25 is formed, the contact portion with the pinion gear 8 can be made to be a point contact rather than a surface contact, and it becomes possible to improve the sliding property. In addition, by changing the depth D depending on the location where burrs are likely to occur, it becomes possible to suppress a decrease in strength.

[0041] In forming the recess 21, it is preferable to form the boundary between the wall constituting the recess and the surface of the spool shaft in an R-shape (arc shape). By forming the boundary in an R-shape, burrs, foreign matter, etc. are less likely to occur, and burrs, foreign matter, etc. occurring in the gap G portion are easily guided into the recess.

[0042] Incidentally, the recess 21 formed as described above also functions as a reservoir for oil adhering to the surface of the spool shaft 20, making it possible to reduce sliding resistance over a long period of time.

[0043] Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment and can be modified in various ways. The present invention is not limited to any other configuration as long as the recess 21 formed on the spool shaft surface is configured to be continuous over 360° in the circumferential direction as viewed from the axial direction. Therefore, the configuration of the reel body 1A, the drive mechanism 10, the spool reciprocating mechanism 40, and the like can be modified in various ways other than the configuration of the recess 21 on the spool shaft surface. In addition, the recess 21 described above may be configured by combining various shapes, or by combining a depression and a groove. For example, a recess of an appropriate shape may be formed depending on the position on the outer surface of the spool shaft. [Explanation of symbols]

[0044] 1. Fishing spinning reel 1A Reel body 3 Rotor 4 Spools 6 Handle 8 Pinion Gear 10 Drive mechanism 20 Spool shaft 21 Recess 22A~22D Recesses 23A~23C Concave (groove)

Claims

1. a pinion gear that is rotationally driven by the rotation of a handle provided on the reel body and that has a rotor having a fishing line guide portion and that is fixed so as to be integrally rotatable with the rotor; a spool shaft inserted inside the pinion gear so as to be movable back and forth; a spool provided at a front end of the spool shaft and moved back and forth together with the spool shaft by rotating the handle; In a fishing spinning reel in which a fishing line is wound around the spool that is moved back and forth through the fishing line guide of the rotating rotor by a rotational operation of the handle, The pinion gear and the spool shaft are disposed so that a gap G is formed between them, A recess is formed on the surface of the spool shaft without interruption over 360° when viewed in the axial direction, A fishing spinning reel characterized in that, when the depth of the recess is D, G>D is satisfied.

2. A pinion gear that is rotationally driven by the rotation of a handle provided on a reel body and that prevents a rotor having a fishing line guide portion from rotating integrally with the rotor; a spool shaft inserted inside the pinion gear so as to be movable back and forth; a spool provided at a front end of the spool shaft and moved back and forth together with the spool shaft by rotating the handle; In a fishing spinning reel in which a fishing line is wound around the spool that is moved back and forth through the fishing line guide of the rotating rotor by a rotational operation of the handle, The pinion gear and the spool shaft are disposed so that a gap G is formed between them, A recess is formed on the surface of the spool shaft without interruption over 360° when viewed in the axial direction, A fishing spinning reel, wherein the recess has a different depth depending on the position where it is formed on the surface of the spool shaft.

3. 3. The fishing spinning reel according to claim 1, wherein the recess is formed in at least a portion of an axial range in which the gap G is formed.

4. 4. The fishing spinning reel according to claim 1, wherein the recessed portion comprises depressions formed in a scattered manner on the surface of the spool shaft.

5. 5. The fishing spinning reel according to claim 1, wherein the recess has a groove extending along a surface of the spool shaft.

6. 6. The fishing spinning reel according to claim 1, wherein the recess has an edge portion formed on the surface of the spool shaft that is rounded.

7. 2. The fishing spinning reel according to claim 1, wherein the depth D of the recess varies depending on the position where the recess is formed on the surface of the spool shaft.

Images