Spinning reel for fishing

The fishing spinning reel's labyrinth structure ensures smooth rotation and improved waterproofing without extra space, addressing rotational resistance and cost issues in existing designs.

JP2025173138APending Publication Date: 2025-11-27DAIWA SEIKO CORPORATION
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Patent Information

Application Number
JP2024078555
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-05-14
Publication Date
2025-11-27

AI Technical Summary

Technical Problem

Existing fishing reels face challenges with waterproof structures that either require excessive space or create rotational resistance, and are costly due to high parts management and assembly precision.

Method used

A fishing spinning reel design featuring a handle shaft, annular tubular portion, cover member, and stand portion forms a labyrinth structure without contact, allowing smooth rotation and enhanced waterproof and dustproof properties while reducing costs.

Benefits of technology

The design achieves smooth handle rotation, high waterproof and dustproof performance, and cost-effectiveness by utilizing a non-contact labyrinth structure that prevents water ingress without additional space requirements.

✦ Generated by Eureka AI based on patent content.

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Abstract

To obtain high water resistance and high dust resistance without rotational resistance of a handle, and reduce costs.SOLUTION: A spinning reel for fishing comprises: a handle shaft 31 fitted to a drive gear shaft 2 supported on a body 10; an annular cylinder 20 protrusively formed in a side part of the body 10 to insert the handle shaft 31 therethrough; a cover member 40 provided on the handle shaft 31 to cover the cylinder 20 therewith; and a stand 32 provided on the handle shaft 31 to cover the cover member 40 from radial outside. The cover member 40 forms a space between itself and the cylinder 20 and extends inward and outward of the cylinder 20. In an axial direction of the handle shaft 31, a space C2 between a tip 41a of the cover member 40 and the body 10 is smaller than a space between a tip 32a of the stand 32 and the body 10.SELECTED DRAWING: Figure 3
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Description

[Technical Field]

[0001] The present invention relates to a spinning fishing reel. [Background technology]

[0002] Conventionally, fishing reels with waterproof structures have been known (see, for example, Patent Document 1). The waterproof structure of the fishing reel in Patent Document 1 has members with convex portions disposed facing each other between the reel body and the rotating member, and the gaps formed between the members form a labyrinth structure that makes it difficult for water to penetrate.

[0003] On the other hand, a common waterproof structure for fishing reels is known in which a seal member is provided on a support member that supports a rotating member, and the lip portion of the seal member is abutted against the rotating member to prevent water from entering. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2016-077232 Summary of the Invention [Problem to be solved by the invention]

[0005] The fishing reel of Patent Document 1 has a problem in that the labyrinth structure requires space, limiting installation locations. In particular, it is difficult to secure enough space to use it as a waterproof structure around the handle shaft in a spinning fishing reel.

[0006] On the other hand, a structure in which the lip of the sealing member abuts against the rotating member has the problem that the contact force of the lip creates rotational resistance in the rotating member. This is particularly unsuitable for fishing, where light rotation of the handle is preferred. Furthermore, maintaining the lip at a predetermined contact force requires high parts management and assembly precision, which is costly.

[0007] The present invention was created to solve these problems, and aims to provide a fishing spinning reel that does not generate resistance to handle rotation, has high waterproof and dustproof properties, and can also reduce costs. [Means for solving the problem]

[0008] In order to solve the above-mentioned problems, the present invention provides a fishing spinning reel comprising: a handle shaft attached to a drive gear shaft supported by a body; an annular tubular portion formed to protrude from a side of the body and through which the handle shaft is inserted; a cover member attached to the handle shaft and covering the tubular portion; and a stand portion attached to the handle shaft and covering the cover member from the radially outer side. The cover member extends from the inside to the outside of the tubular portion, forming a gap between the cover member and the tubular portion, and the tip end of the cover member and the tip end of the stand portion are each positioned with a gap between them and the body in the axial direction of the handle shaft, and the gap between the tip end of the cover member and the body is smaller than the gap between the tip end of the stand portion and the body.

[0009] In this invention, the cover member forms a gap between itself and the tubular portion, covering both the inside and outside, forming a labyrinth structure around the attachment portion of the drive gear shaft and the handle shaft. This provides high waterproof and dustproof properties. Furthermore, since the gap between the tip of the cover member and the body is smaller than the gap between the tip of the stand and the body, even if water penetrates through the gap between the tip of the stand and the body, the penetration of water into the inside of the cover member is suppressed. Therefore, in combination with the labyrinth structure, water can be effectively prevented from penetrating the drive gear shaft side.

[0010] The labyrinth structure means that the opposing portions of the cylindrical portion and the cover member are not single surfaces but composite surfaces, with multiple surfaces opposing each other.

[0011] Furthermore, because the cover member is positioned in a non-contact state with the cylindrical portion, a gap is formed between the cover member and the cylindrical portion, so there is no rotational resistance to the handle shaft, as would occur if the lip of the seal member were to abut against the cover member, resulting in smooth steering. Furthermore, there is no need to increase the parts management and assembly precision required when the lip portion of the seal member is in contact with the seal member, which allows for cost reduction.

[0012] In addition, since the labyrinth structure can be completed inside the stand, no extra space is required, allowing for space saving. Also, because it has a simple structure in which a cylindrical portion protruding from the side of the body is covered with a cover member with a gap formed therein, it can be easily applied to the attachment portion of the drive gear shaft and handle shaft in existing fishing spinning reels, making it highly versatile.

[0013] Furthermore, it is preferable that the outer surface of the tubular portion is an inclined surface that increases in diameter from the body side toward the tip side, and that the cover member has a through hole formed in a portion opposite the inclined surface.

[0014] With this configuration, if water seeps into the cover member, the water can be guided along the slope of the outer surface of the cylindrical portion to the through-hole and then discharged to the outside of the cover member through the through-hole, thereby effectively preventing water from seeping into the drive gear shaft side.

[0015] It is also preferable that the body has a circumferential groove formed in a portion facing the tip of the cover member, and that the tip of the cover member extends into the circumferential groove.

[0016] In this configuration, the tip of the cover member fits into the circumferential groove, forming a labyrinth structure between the body and the cover member, thereby improving waterproof and dustproof properties.

[0017] It is also preferable that the inner surface of the cover member is coated with a water repellent agent.

[0018] This configuration can more effectively prevent water from entering the drive gear shaft side. [Effects of the Invention]

[0019] According to the present invention, a fishing spinning reel can be obtained that does not generate resistance to rotation of the handle, has high waterproof and dustproof properties, and can also be manufactured at a reduced cost. [Brief explanation of the drawings]

[0020] [Figure 1] 1 is a side view showing the overall configuration of a fishing spinning reel according to a first embodiment of the present invention. [Figure 2] FIG. 10 is a vertical cross-sectional view showing the configuration of the main parts of the reel body when the handle is left-handed. [Figure 3] FIG. 10 is an enlarged cross-sectional view showing the labyrinth structure when the steering wheel is on the left. [Figure 4] FIG. 10 is an exploded perspective view showing the configuration of the cylindrical portion of the reel body, the cover member, and the stand portion when the reel is left-handed. [Figure 5]10A and 10B are enlarged views showing the cover member, where FIG. 10A is a rear view and FIG. [Figure 6] FIG. [Figure 7] FIG. 10 is a vertical cross-sectional view showing the configuration of the main parts of the reel body when the handle is right-handed. [Figure 8] FIG. 10 is a vertical cross-sectional view showing the configuration of the main parts of the reel body of a fishing spinning reel according to a second embodiment of the present invention when the handle is left-handed. [Figure 9] FIG. 10 is an enlarged cross-sectional view showing the labyrinth structure. [Figure 10] FIG. 10 is a vertical cross-sectional view showing the configuration of the main parts of the reel body when the handle is right-handed. [Figure 11] FIG. 10 is an enlarged cross-sectional view showing the labyrinth structure of a fishing spinning reel according to a third embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0021] Next, a fishing spinning reel according to an embodiment will be described with reference to the drawings. In the following description, "front and back" and "up and down" refer to the directions shown in Figure 1, and "left and right" refer to the directions shown in Figure 2. Note that in each embodiment, similar parts are given similar reference numerals, and duplicated descriptions will be omitted.

[0022] (First embodiment) First, the basic structure of the fishing spinning reel R1 will be explained. Figure 1 is a side view showing the overall structure of the fishing spinning reel, and Figure 2 is a vertical cross-sectional view showing the structure of the main part of the reel body when the handle is left-handed.

[0023] As shown in Figure 1, a fishing spinning reel R1 comprises a reel body 1 to which a handle 3 is attached, a rotor 4 rotatably supported on the reel body 1, and a spool 5 located in front of the rotor 4 and reciprocating back and forth when the handle 3 is operated to reel in.

[0024] The reel body 1 comprises a body 10 and a cover member 13 attached to the body 10. Legs 12 extending upward are formed on the top of the body 10. A fishing rod attachment part 12a (see Figure 4) that is attached to a fishing rod is formed on the upper end of the legs 12. A protective cover 14 is attached to the rear of the body 10.

[0025] As shown in Figure 1, a drive shaft tube 7 and a spool shaft 8 are attached to the reel body 1 so as to protrude forward from the front of the body 10 (not shown). A rotor 4 is attached to the front end of the drive shaft tube 7. A spool 5 is attached to the front end of the spool shaft 8.

[0026] As shown in Fig. 2, the cover member 13 has a cylindrical insertion portion 13a that is inserted into the inside of the side opening 11. A male thread is formed on the outer peripheral surface of the insertion portion 13a. The male thread is threaded into a female thread formed on the inner peripheral surface of the side opening 11. This threading unites the body 10 and the cover member 13 together.

[0027] The body 10 contains a drive gear shaft 2 and a spool reciprocating device 15 as components for driving the drive shaft tube 7 and spool shaft 8 in conjunction with the operation of the handle 3. The drive gear shaft 2 is equipped with a drive gear 2a for rotationally driving the drive shaft tube 7 and a gear 2b for driving the spool reciprocating device 15. The drive gear shaft 2 is rotatably supported by the cover member 13 and the body 10 via left and right ball bearings 16a, 16b. The tip end 31a of a handle shaft 31 provided on the handle 3 is threadably attached to the drive gear shaft 2. This allows the handle 3 and drive gear shaft 2 to rotate together.

[0028] The spool reciprocating device 15 is configured to move the spool shaft 8 in the front-rear direction by a driving force transmitted via a gear 2b of the drive gear shaft 2 (see FIG. 2).

[0029] As described above, when the drive gear shaft 2 rotates due to the reeling operation of the handle 3, the rotational motion is converted into the forward and backward motion of the spool reciprocating device 15. This causes the spool shaft 8 (spool 5) to reciprocate in the forward and backward directions. In addition, the drive gear 2a rotates the drive shaft cylinder 7, and the rotor 4 rotates around the drive shaft cylinder 7 in the fishing line reeling direction.

[0030] Next, the drive gear shaft 2, handle shaft 31, and their surrounding structure will be described in detail with reference to Figures 2 to 6. Figure 3 is an enlarged cross-sectional view showing the labyrinth structure when the handle is left-handed, and Figure 4 is an exploded perspective view showing the configuration of the cylindrical portion of the reel body, the cover member, and the stand portion. Figure 5 is an enlarged view of the cover member, and Figure 6 is an enlarged rear view of the lid member. As shown in Fig. 2, the drive gear shaft 2 is generally cylindrical, has a stepped circular outer periphery along the central axis O1, and has male threads 2e, 2f provided on the left and right ends. The left male thread 2e allows the handle 3 to be attached to the left side, and the right male thread 2f allows the handle 3 to be attached to the right side (see Fig. 7).

[0031] A drive gear 2a is attached to the outer peripheral surface of the drive gear shaft 2 at a position offset to the left from the center in the left-right direction. A gear 2b is integrally formed on the drive gear shaft 2 at a position offset to the right from the center in the left-right direction. A left-side ball bearing 16a is fitted onto the base 2c of the drive gear 2a. The left-side ball bearing 16a is fitted into the circular inner peripheral surface 13b of the cover member 13. A pin member 2d is disposed radially inside the left-side ball bearing 16a to fix the drive gear 2a to the drive gear shaft 2 without rotating.

[0032] A cylindrical portion 20 is integrally formed on the left side of the cover member 13 to protrude therefrom (see FIG. 6). The cylindrical portion 20 has an annular shape centered on a central axis O1. The cylindrical portion 20 functions as a component of the body 10 to form a labyrinth structure, which will be described later. A tip end 31a of a handle shaft 31, which is threaded into the left male thread portion 2e of the drive gear shaft 2, is inserted into the radially inner side of the cylindrical portion 20.

[0033] As shown in FIG. 3, the tubular portion 20 protrudes leftward from the flat outer surface 13c of the cover member 13. The tubular portion 20 has a generally triangular cross section and includes an outer surface 21, a tip surface 22 continuous with the outer surface 21, and an inner surface 23 continuous with the tip surface 22. The outer surface 21 is the radially outer surface of the tubular portion 20 and is an inclined surface whose diameter increases from the body 10 side toward the tip portion side. The tip surface 22 is parallel to the outer surface 13c of the cover member 13. The inner surface 23 is parallel to the central axis O1. A female thread portion 23a is formed on the inner surface 23. The tubular portion 20 is covered by a cover member 40 (described later) provided on the handle shaft 31.

[0034] As shown in Fig. 2, a stand portion 32 is attached to the outer periphery of the base end portion 31b of the handle shaft 31. The stand portion 32 is funnel-shaped about a central axis O1, and its diameter increases from the handle 3 side toward the lid member 13 side. As shown in Fig. 3, a tip end portion 32a of the stand portion 32 faces the outer surface 13c of the lid member 13 in the direction of the central axis O1 (axial direction), with a gap C1 between it and the outer surface 13c. This gap C1 prevents the stand portion 32 from coming into contact with the lid member 13, ensuring smooth rotation of the stand portion 32 (handle shaft 31).

[0035] On the other hand, as shown in FIG. 2, a cover member 40 is attached to the outer periphery of the tip end portion 31a of the handle shaft 31. The cover member 40 functions as a component on the handle shaft 31 side for forming the labyrinth structure. The cover member 40 covers the tubular portion 20 of the lid member 13 inside the stand portion 32. The cover member 40 has an annular shape centered on the central axis O1, and extends from the inside to the outside of the tubular portion 20, forming a predetermined gap between it and the tubular portion 20 to form the labyrinth structure. In other words, the cover member 40 is arranged in a non-contact state with the tubular portion 20. Furthermore, the cover member 40 is arranged radially inward of the stand portion 32 with a gap therebetween, and forms an internal space S between itself and the inner surface of the stand portion 32.

[0036] As shown in FIG. 3 , the cover member 40 includes a base 43, an inner wall 43a continuous with the base 43, a side wall 42 continuous with the inner wall 43a, and an outer wall 41 continuous with the side wall 42. The base 43 is fixed to the outer surface of the tip end 31a of the handle shaft 31 with an adhesive. The inner wall 43a extends from the base 43 toward the handle 3 so as to face the inner surface 23 of the tubular portion 20. The side wall 42 extends radially outward from an end of the inner wall 43a so as to face the tip end surface 22 of the tubular portion 20. The outer wall 41 extends from an end of the side wall 42 toward the cover member 13 so as to face the outer surface 21 of the tubular portion 20.

[0037] In this embodiment, a water repellent agent is applied to the inner surface of the cover member 40 made up of these parts. However, it is not necessary to apply a water repellent agent.

[0038] The tip end 41a of the outer wall portion 41 faces the outer surface 13c of the lid member 13 in the direction of the central axis O1 (axial direction), with a gap C2 between them. This gap C2 prevents the cover member 40 from coming into contact with the lid member 13, ensuring smooth rotation of the cover member 40 (handle shaft 31). The gap C2 of the cover member 40 is set smaller than the gap C1 of the stand portion 32, so that the relationship of gap C2<gap C1 is satisfied. As a result, the structure around the handle shaft 31 is configured such that the gap C1 allows water to enter the internal space S, while the gap C1 allows water to be discharged from the internal space S, and the gap C2 makes it difficult for water to enter the cover member 40.

[0039] In this way, the labyrinth structure of this embodiment has three surfaces (composite surfaces) for the tubular portion 20, consisting of the outer surface 21, the tip surface 22, and the inner surface 23, along the tubular portion 20 from the gap C2 side, and for the cover member 40, three surfaces (composite surfaces) for the cover member 40, consisting of the inner surface of the outer wall portion 41, the inner surface of the side wall portion 42, and the inner surfaces of the inner wall portion 43a and the base portion 43, along the cover member 40 from the gap C2 side.

[0040] A plurality of through holes 41b are formed in the outer wall portion 41. As shown in FIGS. 4 and 5(a) and (b), the through holes 41b are formed at predetermined intervals in the circumferential direction of the outer wall portion 41 and have a circular shape. Note that the through holes 41b are not limited to being circular, and various shapes such as elongated holes, squares, triangles, polygons, etc. may be used. The circumferential intervals between the through holes 41b may be set as appropriate.

[0041] As shown in Fig. 3, the through-hole 41b is disposed opposite the outer surface 21 of the tubular portion 20. The through-hole 41b functions as an outlet for discharging water that has entered the cover member 40 through the gap C2. A hole edge 41c on the handle 3 side of the through-hole 41b is positioned so as to overlap radially with an outer surface corner 20a of the tubular portion 20. In other words, the outer surface corner 20a of the tubular portion 20 is disposed in a position opposite the hole edge 41c of the through-hole 41b.

[0042] As shown in Figure 2, an annular plate 18 centered on a central axis O1 is attached to the right side portion 10b of the body 10. A cylindrical portion 20 is integrally formed and protrudes from the right side of the plate 18. When the handle is on the left, a cap 17 is attached to the cylindrical portion 20 of the plate 18 by screwing it via an O-ring 17b. The cap 17 covers the cylindrical portion 20 and the right end of the drive gear shaft 2.

[0043] FIG. 7 is a vertical cross-sectional view showing the configuration of the main parts of the reel body when the handle is right-handed. 7, when the handle is on the right side, the handle shaft 31 is screwed onto the male thread portion 2f at the right end of the drive gear shaft 2. With the handle shaft 31 attached to the drive gear shaft 2, the cover member 40 covers the tubular portion 20 of the plate 18, and a labyrinth structure is formed between the cover member 40 and the tubular portion 20, just as in the case of a left-hand drive. When the handle is on the right side, a cap 17 is attached to the cylindrical portion 20 of the cover member 13 by screwing.

[0044] According to the fishing spinning reel R1 of this embodiment described above, the cover member 40 forms a gap between itself and the tubular portion 20 and covers the inside and outside, thereby forming a labyrinth structure around the attachment portion of the drive gear shaft 2 and the handle shaft 31. This provides high waterproof and dustproof properties. Furthermore, because the gap C2 of the cover member 40 is smaller than the gap C1 of the stand portion 32, even if water infiltrates through the gap C1 of the stand portion 32, the infiltration of water into the inside of the cover member 40 is suppressed. Therefore, in combination with the labyrinth structure, water can be effectively prevented from infiltrating the drive gear shaft 2 side.

[0045] Furthermore, since the gap C2 of the cover member 40 is smaller than the gap C1 of the stand portion 32, the infiltration of water into the inside of the cover member 40 is suppressed, and water that infiltrates through the gap C1 of the stand portion 32 first flows into the inner hollow portion S and then is discharged to the outside of the stand portion 32 through the gap C1.

[0046] Furthermore, because the cover member 40 is arranged in a non-contact state with the tubular portion 20, forming a gap therebetween, the handle shaft 31 does not experience the rotational resistance that would occur if the lip portion of the sealing member were in contact with the cover member 40. This allows for smooth steering. Furthermore, there is no need to increase the parts management and assembly precision required when the lip portion of the seal member is in contact with the seal member, which allows for cost reduction.

[0047] Furthermore, since the labyrinth structure can be completed inside the stand portion 32, no extra space is required, allowing for space saving. Furthermore, since it has a simple structure in which the tubular portion 20, which protrudes from the side of the body 10, is covered with the cover member 40 with a gap formed therebetween, it can be easily applied to the attachment portion of the drive gear shaft 2 and the handle shaft 31 in existing fishing spinning reels, providing excellent versatility.

[0048] Furthermore, because the outer surface 21 of the cylindrical portion 20 is an inclined surface and the cover member 40 is formed with through holes 41b, even if water seeps into the cover member 40, the water can be guided along the inclination of the outer surface 21 of the cylindrical portion 20 to the through holes 41b and can be discharged through the through holes 41b to the outside of the cover member 40. In other words, because water can be discharged into the inner space S midway through the labyrinth structure, water can be suitably prevented from entering the drive gear shaft 2 side. One possible case in which water may infiltrate into the cover member 40 is when the amount and force of water infiltrating through the gap C1 is so great that the internal space S is temporarily filled with water, and some of the water that has nowhere to go may infiltrate into the cover member 40 through the gap C2. However, even in such a case, the labyrinth structure effectively prevents water from infiltrating into the drive gear shaft 2 side.

[0049] Furthermore, since the inner surface of the cover member 40 is coated with a water repellent agent, it is possible to more effectively prevent water from entering the drive gear shaft 2 side.

[0050] (Second embodiment) Next, a fishing spinning reel according to a second embodiment will be described with reference to Figures 8 and 9. Figure 8 is a longitudinal cross-sectional view showing the configuration of the main parts of the reel body of the fishing spinning reel according to the second embodiment when the handle is left-handed, and Figure 9 is an enlarged cross-sectional view showing the labyrinth structure of the same. This embodiment differs from the first embodiment in that a circumferential groove 19e is formed on the body 10 (lid member 13, plate 18) side, a tip end 41a of a cover member 40 is disposed within the circumferential groove 19e, and a labyrinth structure is formed by the circumferential groove 19e and the tip end 41a.

[0051] As shown in Fig. 8, circumferential groove 19e is formed in outer surface 13c of lid member 13 and has a size that allows tip portion 41a of cover member 40 to be accommodated in a non-contact state. As shown in Fig. 9, circumferential groove 19e has a bottom surface 19f, one end surface 19g that is continuous with one end of bottom surface 19f, and another end surface 19h that is continuous with the other end of bottom surface 19f, and has a concave cross section.

[0052] The tip portion 41a of the cover member 40 extends within the circumferential groove 19e. A tip surface 41a1 of the tip portion 41a faces a bottom surface 19f of the circumferential groove 19e with a gap C2 between them. An inner surface 41a2 of the tip portion 41a faces one end surface 19g of the circumferential groove 19e with a gap between them. An outer surface 41a3 of the tip portion 41a faces the other end surface 19h of the circumferential groove 19e with a gap between them. These gaps C2 and C2 prevent the cover member 40 from contacting the lid member 13, ensuring smooth rotation of the cover member 40 (handle shaft 31). The gap between the inner surface 41a2 of the tip portion 41a and one end surface 19g of the circumferential groove 19e and the gap between the outer surface 41a3 of the tip portion 41a and the other end surface 19h of the circumferential groove 19e can be set as appropriate.

[0053] In this embodiment, too, the gap C2 of the cover member 40 is set smaller than the gap C1 of the stand portion 32, so that the relationship of gap C2<gap C1 is satisfied. As a result, the structure around the handle shaft 31 is such that the gap C1 allows water to enter the inner space S, while the gap C1 enables water to be discharged from the inner space S, and the circumferential groove 19e (gap C2) makes it difficult for water to enter the cover member 40.

[0054] The circumferential groove 19e is also formed in the plate 18 on the right side portion 10b of the body 10 in the same manner. FIG. 10 is a vertical cross-sectional view showing the configuration of the main parts of the reel body when the handle is right-handed. 10, when the handle is on the right side, the handle shaft 31 is screwed onto the male thread portion 2f at the right end of the drive gear shaft 2. With the handle shaft 31 attached to the drive gear shaft 2, the tip end 41a of the cover member 40 is disposed in the circumferential groove 19e, and a labyrinth structure is formed by the circumferential groove 19e and the tip end 41a.

[0055] In this labyrinth structure formed by the circumferential groove 19e and the tip portion 41a, the circumferential groove 19e has three surfaces (composite surfaces) consisting of the other end face 19h, the bottom face 19f, and the one end face 19g along the circumferential groove 19e from the gap C2 side, and the tip portion 41a of the cover member 40 has three surfaces (composite surfaces) consisting of the outer surface 41a3, the tip face 41a1, and the inner surface 41a2 along the tip portion 41a from the gap C2 side.

[0056] According to the fishing spinning reel R1 of this embodiment described above, in addition to the effects described in the first embodiment, the tip 41a of the cover member 40 fits into the circumferential groove 19e, thereby forming a labyrinth structure between the lid member 13 (plate 18) and the cover member 40, thereby improving waterproofness and dustproofness.

[0057] (Third embodiment) Next, a fishing spinning reel according to a third embodiment will be described with reference to Figure 11. Figure 11 is an enlarged cross-sectional view showing the labyrinth structure of a fishing spinning reel according to the third embodiment. This embodiment differs from the first and second embodiments in that the number of composite surfaces that make up the labyrinth structure is increased.

[0058] As shown in Fig. 11, the tubular portion 20A has a protrusion 24 that has an angular cross section and protrudes radially inward, and a stepped surface 24a is formed on the side of the protrusion 24. Meanwhile, the cover member 40A has a stepped portion 43b that follows the protrusion 24 of the tubular portion 20A, between the base portion 43 and the inner wall portion 43a. The outer surface 21A of the tubular portion 20A is parallel to the outer wall portion 41A of the cover member 40A. The outer wall portion 41A does not have a through hole 41b (see Fig. 3).

[0059] In the labyrinth structure of this embodiment, the tubular portion 20A has five surfaces (composite surfaces) along the tubular portion 20 from the gap C2 side, consisting of the outer surface 21A, the tip surface 22, the inner surface 23, the step surface 24a, and the inner surface of the protrusion 24, and the cover member 40A has five surfaces (composite surfaces) along the cover member 40A from the gap C2 side, consisting of the inner surface of the outer wall portion 41A, the inner surface of the side wall portion 42, the inner surface of the inner wall portion 43a, the inner surface of the step portion 43b, and the inner surface of the base portion 43.

[0060] According to the fishing spinning reel R1 of this embodiment described above, as in the first and second embodiments, the cover member 40A forms a gap between itself and the tubular portion 20A and covers the inside and outside of the reel, thereby forming a labyrinth structure around the attachment portion of the drive gear shaft 2 and the handle shaft 31. This provides high waterproof and dustproof properties. Furthermore, because the gap C2 of the cover member 40A is smaller than the gap C1 of the stand portion 32, even if water infiltrates through the gap C1 of the stand portion 32, the infiltration of water into the inside of the cover member 40A is suppressed. Therefore, in combination with the labyrinth structure, water can be effectively prevented from infiltrating the drive gear shaft 2 side.

[0061] Furthermore, compared to the first and second embodiments, the number of composite surfaces that make up the labyrinth structure is increased, so that water can be prevented from entering the drive gear shaft 2 side in an appropriate manner.

[0062] Although the embodiments have been described above, the present invention is not limited to the examples shown in the embodiments. For example, in the first and second embodiments, the labyrinth structure is formed by three composite surfaces, but the present invention is not limited to this, and the labyrinth structure may be formed by four or more composite surfaces.

[0063] In the first and second embodiments, the outer surface 21 of the cylindrical portion 20 is an inclined surface, but this is not limitative and the outer surface 21 may be a surface parallel to the central axis O1.

[0064] Furthermore, in the first and second embodiments, a plurality of through holes 41b are provided in the outer wall portion 41 of the cover member 40, but this is not necessarily required.

[0065] Furthermore, various shapes can be adopted for the cylindrical portions 20, 20A and the cover members 40, 40A as long as a gap can be formed between them to form a labyrinth structure.

[0066] In the third embodiment, the circumferential groove 19e described in the second embodiment may be provided, and the tip portion 41a of the cover member 40A may be disposed within the circumferential groove 19e. [Explanation of symbols]

[0067] 2 Drive gear shaft 10 Body 19e Circumferential groove 20 Cylinder part 21 Exterior 31 Handle shaft 32 Stand section 32a Tip 20A cylinder part 40 Cover member 40A Cover material 41a Tip 41b Through hole C1 Gap (Stand) C2 Gap (cover member) R1 Fishing Spinning Reel

Claims

1. a handle shaft attached to a drive gear shaft supported by the body; a cylindrical portion formed on a side of the body to protrude therefrom and through which the handle shaft is inserted; a cover member provided on the handle shaft and covering the cylindrical portion; a stand portion provided on the handle shaft and covering the cover member from the radially outer side, the cover member extends from the inside to the outside of the cylindrical portion, forming a gap between the cover member and the cylindrical portion; In the axial direction of the handle shaft, a tip end of the cover member and a tip end of the stand portion are respectively disposed with a gap between them and the body, A fishing spinning reel, wherein a gap between the tip of the cover member and the body is smaller than a gap between the tip of the stand portion and the body.

2. The outer surface of the cylindrical portion is an inclined surface whose diameter increases from the body side toward the tip end side, 2. The fishing spinning reel according to claim 1, wherein the cover member has a through hole formed in a portion facing the inclined surface.

3. The body has a circumferential groove formed in a portion facing the tip end of the cover member, 3. The fishing spinning reel according to claim 1, wherein a tip end of the cover member extends into the circumferential groove.

4. 2. The fishing spinning reel according to claim 1, wherein the inner surface of the cover member is coated with a water repellent agent.

Citation Information

Patent Citations

  • Fishing reel waterproof structure

    JP2016077232A