CN109511621B

CN109511621B - Spool attachment/detachment mechanism for fishing reel and single-bearing reel

Info

Publication number: CN109511621B
Application number: CN201810908798.8A
Authority: CN
Inventors: 森本伸一
Original assignee: Shimano Inc
Current assignee: Shimano Inc
Priority date: 2017-09-19
Filing date: 2018-08-10
Publication date: 2022-02-18
Anticipated expiration: 2038-08-10
Also published as: KR102604720B1; TWI749243B; JP2019050785A; TW201914419A; KR20190032171A; CN109511621A; JP6968640B2

Abstract

The invention provides a spool attachment/detachment mechanism for a fishing reel and a single-bearing reel, which can be easily assembled. The spool mounting and dismounting mechanism comprises: an outer ring of the 1 st bearing, which protrudes from a free end of the spool shaft in a radial direction of the spool shaft, and has a 1 st side surface and a 2 nd side surface, wherein the 1 st side surface faces a free end surface side of the spool shaft, and the 2 nd side surface faces a support portion side opposite to the free end surface of the spool shaft; at least 1 detachable component, which is mounted on the winding reel and is provided with a limiting part and a pressing operation part, wherein, the limiting part is provided with a surface which can be opposite to the 2 nd side surface and can be clamped with the outer ring, and the pressing operation part moves the limiting part in the direction of separating from the outer ring when being pressed and operated to the rotating shaft of the winding reel with the boss part; an annular spring for applying force to the limiting part to the rotating shaft along the radius direction of the winding reel; and a holding member for holding the detachable member at the mounting position of the spool.

Description

Spool attachment/detachment mechanism for fishing reel and single-bearing reel

Technical Field

The present invention relates to a spool attachment/detachment mechanism for a fishing reel and a single-bearing fishing reel, and relates to a spool capable of attaching/detaching a fishing reel to/from a spool shaft.

Background

There is known a mechanism in which a spool attachment/detachment mechanism is provided in a fishing reel such as a single-bearing reel and a spinning reel, the spool attachment/detachment mechanism enabling attachment/detachment of a spool by a one-touch operation without using a tool. For example, a spool attachment/detachment mechanism of patent document 1 includes: the bearing assembly comprises a No. 1 bearing as a protrusion, a detachable component, an urging component and a cover component as a positioning component. The 1 st bearing has a 1 st side surface and a 2 nd side surface. The detachable member has a restricting portion and a pressing operation portion. The restricting portion is engaged with the 2 nd side surface in a manner facing the 2 nd side surface. The detachable member is movable in a radial direction between a restricting position where the restricting portion faces the 2 nd side surface and a separating position where the separating position is separated from the 1 st bearing. The biasing member biases the detachable member to the restricting position. The cover member positions the detachable member urged to the restricting position at the restricting position.

[ Prior art documents ]

[ patent document ]

Patent document 1: japanese patent laid-open publication No. 2014-30372

Disclosure of Invention

[ problem to be solved by the invention ]

The spool attachment/detachment mechanism of patent document 1 requires a coil spring that biases the attachment/detachment member to the regulation position to be attached from the radial direction of the spool, and such attachment is difficult. Since it is necessary to secure a space for mounting the spool attachment/detachment mechanism, it is also difficult to achieve radial miniaturization. When the coil spring is incorporated, the coil spring may be deformed.

The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a spool attachment mechanism for a fishing reel and a single-bearing reel, in which the spool attachment mechanism for a fishing reel is easily attached.

[ technical means for solving problems ]

A spool attachment/detachment mechanism according to claim 1 of the present invention is a spool attachment/detachment mechanism for a fishing reel, the spool attachment/detachment mechanism being capable of attaching/detaching a fishing reel to/from a spool shaft, the spool attachment/detachment mechanism including: a protrusion portion protruding from a free end of the spool shaft in a radial direction of the spool shaft, and having a 1 st side surface facing the free end surface of the spool shaft and a 2 nd side surface facing a support portion opposite to the free end surface of the spool shaft; at least 1 detachable component, which is mounted on the winding reel and is provided with a limiting part and an operating part, wherein, the limiting part is provided with a surface which can be opposite to the 2 nd side surface and can be engaged with the protrusion part, and the operating part moves the limiting part in the direction of separating from the protrusion part when being pressed and operated to the rotating shaft of the winding reel; an annular spring for applying force to the limiting part to the rotating shaft along the radius direction of the winding reel; and a holding member for holding the detachable member at the mounting position of the spool.

Preferably, the removable member is attached to a slit that penetrates an inner peripheral surface from an outer peripheral surface of a cylindrical boss portion provided in the spool body portion of the spool, and movement of the spool in the axial direction of the spool with respect to the removable member engaged with the protrusion portion is regulated by the slit.

Preferably, the holding member is fixed to a tip end of the spool in the rotation axis direction, and holds the detachable member at the mounting position of the spool.

Preferably, the projection is a rolling bearing mounted to the free end of the spool shaft so as to be immovable in the axial direction, and the 2 nd side surface is a surface of the outer ring of the rolling bearing facing the support portion side.

Preferably, the pair of removable members are attached to the spool so as to face each other in a radial direction with the rotation shaft of the spool interposed therebetween, and the annular spring biases the restricting portions of the pair of removable members in a direction of approaching each other.

Further preferably, the restricting portions and the operating portions of the detachable members are disposed at positions facing each other across the rotation axis of the spool, the detachable members each have a coupling portion that is bent outward in the radial direction of the rotation axis of the spool to couple the restricting portions and the operating portions, and the annular spring is engaged with the restricting portions outward in the radial direction to bias the restricting portions of the pair of detachable members toward each other.

Or it may be: the restricting portions and the operating portions of the detachable members are disposed at positions facing each other across the rotation axis of the spool, the detachable members each have a coupling portion that bends outward in the radial direction of the rotation axis of the spool to couple the restricting portions and the operating portions, and the annular spring engages with the inside in the radial direction of the operating portions to bias the operating portions of the pair of detachable members away from each other.

Preferably, the ring spring is formed of one wire.

The detachable member and the ring spring may be formed integrally.

Preferably, the restricting portion includes: a restricting surface disposed opposite to the 2 nd side surface; and an inclined surface disposed on the opposite side of the regulating surface, the inclined surface having a greater distance from the regulating surface toward the radially outer side.

The single-bearing reel according to claim 2 of the present invention includes a spool body; a spool shaft supported by a reel unit at a suspension arm thereof; a 1 st bearing as a projection part, which is arranged on the free end part of the winding reel shaft in a falling-proof way; a 2 nd bearing disposed closer to the cantilever support side than the 1 st bearing; a spool for winding, which has a spool main body and a cylindrical boss portion, wherein the boss portion is integrally formed with the spool main body, is disposed on an inner peripheral side of the spool main body, and is rotatably supported by a spool shaft via a 1 st bearing and a 2 nd bearing; and the spool attaching and detaching mechanism according to claim 1.

[ Effect of the invention ]

According to the spool attachment/detachment mechanism of the present invention, only 1 ring spring is fitted as the urging member from the tip end side of the spool and assembled, and therefore, the assembly of the spool attachment/detachment mechanism of the fishing reel can be easily performed.

Drawings

Fig. 1 is a front view of a single-bearing reel according to embodiment 1 of the present invention.

Fig. 2 is a rear view of the single-bearing reel according to embodiment 1.

Fig. 3 is a sectional view of the single-bearing reel according to embodiment 1.

Fig. 4 is a sectional view of the single-bearing reel according to embodiment 1.

Fig. 5 is a front view of the detachable member according to embodiment 1.

Fig. 6 is a perspective view of the detachable member according to embodiment 1.

Fig. 7 is a perspective view of a ring spring according to embodiment 1.

Fig. 8 is a perspective view of a pair of detachable members according to embodiment 1.

Fig. 9 is a sectional view of the spool attachment/detachment mechanism according to embodiment 1.

Fig. 10 is a sectional view of the spool attachment/detachment mechanism according to embodiment 1 during the pressing operation.

Fig. 11 is a perspective view of a ring spring according to embodiment 2 of the present invention.

Fig. 12 is a sectional view of the spool attachment/detachment mechanism according to embodiment 2.

Fig. 13 is a sectional view of the spool attachment/detachment mechanism according to embodiment 3 of the present invention.

Fig. 14 is a sectional view of the spool attachment/detachment mechanism according to embodiment 3 during the pressing operation.

Fig. 15 is a sectional view of the spool attachment/detachment mechanism according to embodiment 4 of the present invention.

Fig. 16 is a sectional view of the spool attachment/detachment mechanism when the ring spring according to embodiment 4 is attached.

Fig. 17 is a perspective view showing an example of the ring spring according to embodiment 4.

Description of the reference numerals

1: a reel unit; 2: a spool shaft; 3: a spool; 4: a 1 st bearing; 4 c: first, the

1, side plates; 4 d: a 2 nd side plate; 5: a 2 nd bearing; 6: a spool dismounting mechanism; 30: disassembling and assembling the parts; 30 a: a 1 st surface; 32: a ring spring; 32 a: a fastening part; 32 b: a connecting portion; 33: a ring spring; 33 b: a pressing operation part; 34: a cover member; 35: a winding main body part; 37: a boss portion; 37 b: a slit; 40: a restricting section; 40 a: a limiting surface; 40 b: an inclined surface; 42: a pressing operation part; 44: a connecting portion; 50: a restricting section; 50 a: a limiting surface; 50 b: an inclined surface; 100: a single-bearing reel.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the drawings, the same or equivalent portions are denoted by the same reference numerals.

Embodiment mode 1

Fig. 1 is a front view of a single-bearing reel according to embodiment 1 of the present invention. The single-bearing reel 100 includes a reel unit 1 and a spool 3, wherein the spool 3 is rotatably attached to the reel unit 1, and a fishing line is wound around the outer periphery of the spool 3. The reel unit 1 includes a disc-shaped frame 10 and a rod attachment portion 12 to which a fishing rod RD is attached. The frame 10 has a smaller diameter than the spool 3. The spool 3 can be rotated by operating a handle grip 54 provided on the spool 3. The spool 3 is provided with a weight 56, and the weight 56 is disposed at a position facing the grip handle 54 with the rotation shaft interposed therebetween.

Generally, the surface of the spool 3 on which the fishing line is wound is formed of a rotating surface. A straight line on a plane that forms a rotation plane by rotating a curve on the plane around the straight line on the plane is referred to as a rotation axis. The rotation shaft of the spool 3 is a rotation shaft for forming a rotation surface of the surface on which the fishing line of the spool 3 is wound.

The spool 3 is provided with a pair of detachable members 30, and the pair of detachable members 30 are provided to face each other with a rotation shaft interposed therebetween. The spool 3 can be detached from the reel unit 1 by operating the pressing operation portion 42 of the detaching member 30 so as to approach each other to the rotation axis. The attaching and detaching member 30 rotates together with the spool 3.

Fig. 2 is a rear view of the single-bearing reel according to embodiment 1. The rod attachment portion 12 has a fixing portion 12a, an arm portion 12b, and an attachment leg portion 12 c. The arm portion 12b is formed integrally with the fixed portion 12 a. The arm portion 12b extends and bends outward in the radial direction of the frame 10 from the fixed portion 12a, and is connected to a mounting leg portion 12c disposed outward in the radial direction of the spool 3. The mounting leg portion 12c is formed integrally with the arm portion 12 b. The mounting leg portion 12c can be mounted to the fishing rod RD disposed in the front-rear direction at the tip end of the arm portion 12 b.

The fixing portion 12a is annular and has an inner peripheral surface 12d, and the inner peripheral surface 12d is fitted to an outer peripheral surface 14g of a fitting projection 14d formed on the frame 10. The fixing portion 12a has a plurality of (for example, 4) fixing holes 12e arranged at equal intervals in the circumferential direction. The bolt member 16 inserted into the fixing hole 12e is screwed into a screw hole 14e formed in the frame 10, thereby fixing the rod attachment portion 12 to the frame 10. The fitting protrusion 14d is disposed centering on the 2 nd position C2, and the 2 nd position C2 is provided eccentrically with respect to the 1 st position C1 of the center of the frame 10. The 1 st position C1 coincides with the position of the rotation shaft of the spool 3.

For example, the bolt member 16 is screwed into 4 screw holes 14e every 1 of the 8 screw holes 14e from the rod attachment portion 12 side, to fix the rod attachment portion 12 to the frame 10. The position where the rod attachment portion 12 is fixed to the frame 10 is changed by 8, and the distance between the fishing rod RD attached to the rod attachment portion 12 and the rotation axis of the reel 3 can be changed to 8 steps.

Fig. 3 is a sectional view of the single-bearing reel according to embodiment 1. FIG. 3 is a cross section showing a cut from the cutting line III-III of FIG. 1. The spool 3 is rotatably supported by a spool shaft 2, and the spool shaft 2 is fixed to a frame 10.

The spool shaft 2 is cantilevered to the frame 10. The supported end is called a support portion, and the other unsupported end is called a free end. The end face of the free end portion is a free end face. The spool shaft 2 is fitted with a 1 st bearing 4 at a free end portion and a 2 nd bearing 5 at a support portion side. The inner ring 4a of the 1 st bearing 4 and the inner ring 5a of the 2 nd bearing 5 are fixed to the spool shaft 2. The spool 3 is fitted to the outer ring 4b of the 1 st bearing 4 and the outer ring 5b of the 2 nd bearing 5, and is supported by the spool shaft 2 so as to be rotatable with respect to the spool shaft 2. The spool 3 can be attached to the spool shaft 2 or the spool 3 can be detached from the spool shaft 2 by the spool attachment/detachment mechanism 6. The above-mentioned attaching and detaching member 30 constitutes the spool attaching and detaching mechanism 6.

< Structure of fishing reel main body >

The frame 10 has: a mounting portion 14 that is cantilever-supported with respect to the reel shaft 2 and to which the pole mounting portion 12 is mounted; and a bite prevention portion 15 formed at the edge portion. The mounting portion 14 has a 1 st mounting portion 14a to which the rod mounting portion 12 is mounted, and a 2 nd mounting portion 14b for mounting the reel shaft 2.

The 1 st mounting part 14a includes: an annular arrangement portion 14c on which the rod attachment portion 12 is arranged; and a fitting projection 14d projecting circularly from the arrangement portion 14 c. The arrangement portion 14c and the fitting convex portion 14d protrude to the opposite side of the direction in which the spool shaft 2 extends from the arrangement portion 14 c. As shown in fig. 2, in the arrangement portion 14C, a plurality of (for example, 8) screw holes 14e for fixing the rod attachment portion 12 to the frame 10 are formed at equal intervals in the circumferential direction around the 2 nd position C2.

The spool shaft 2 is mounted to the 2 nd mounting portion 14 b. The 2 nd mounting portion 14b is provided to protrude from the fitting projection 14d in the extending direction of the spool shaft 2. The 2 nd mounting portion 14b is formed to protrude cylindrically around the 1 st position C1, which is the axial center of the spool shaft 2. A female screw portion 14f is formed in the center of the 2 nd mounting portion 14b, and the spool shaft 2 is screwed and fixed to the female screw portion 14 f. The female screw portion 14f is disposed at the center of the frame 10.

The thread biting prevention portion 15 is provided for preventing a fishing line from biting into the spool 3 of the reel unit 1. The tip end of the seizing prevention portion 15 is disposed in an annular groove 36c provided in the 1 st flange portion 36a of the spool 3. The biting line prevention portion 15 is formed by bending toward the annular groove 36 c.

< spool shaft Structure >

The spool shaft 2 is cantilevered to the 2 nd mounting portion 14 b. The spool shaft 2 includes: a 1 st bearing attachment portion 2b having a female screw hole 2a formed at the tip end thereof, a 2 nd bearing attachment portion 2c, a flange portion 2d, and a male screw portion 2 e. The 1 st bearing 4 is mounted on the 1 st bearing mounting portion 2b which is a free end portion. A drop-off preventing bolt 18 for preventing the 1 st bearing 4 from dropping off is screwed into the internal screw hole 2 a. The head 18a of the drop-preventing bolt 18 abuts against the inner ring 4a of the 1 st bearing 4.

The diameter of the 2 nd bearing mounting portion 2c is larger than that of the 1 st bearing mounting portion 2b, and the 2 nd bearing 5 is mounted on the support portion side of the 2 nd bearing mounting portion 2 c. The inner ring 4a of the 1 st bearing 4 and the inner ring 5a of the 2 nd bearing 5 are in contact with a spacer sleeve 20 for positioning disposed therebetween. Accordingly, the inner ring 4a of the 1 st bearing 4 and the inner ring 5a of the 2 nd bearing 5 are positioned. The outer diameter of the 2 nd bearing 5 is larger than that of the 1 st bearing 4.

The flange 2d has a diameter larger than that of the 2 nd bearing mounting portion 2c, positions the 2 nd bearing 5, and abuts against the 2 nd mounting portion 14b to position the spool shaft 2 in the axial direction. The inner race 5a of the 2 nd bearing 5 is restricted from moving in the axial direction by the flange portion 2d and the spacer sleeve 20. The external thread portion 2e serving as a support portion is screwed into the internal thread portion 14f to fix the spool shaft 2 to the 2 nd mounting portion 14 b.

The 1 st bearing 4 also functions as a projection of the spool attachment/detachment mechanism 6. The 1 st bearing 4 is a projection projecting from the free end of the spool shaft 2 in the radial direction of the spool shaft 2. The outer ring 4b of the 1 st bearing 4 has: a 1 st side surface 4c facing the free end surface, and a 2 nd side surface 4d facing a support portion side opposite to the 1 st side surface 4 c.

< Structure of spool >

The spool 3 is an annular member made of light metal such as aluminum alloy, and is formed by machining. The spool 3 has a cylindrical spool body 35, a 1 st flange 36a, and a 2 nd flange 36b, which are integrally formed. These components may also be constructed in a single piece. As described above, the annular groove 36c for preventing the biting portion 15 from entering is formed on the outer surface of the outer periphery side of the 1 st flange portion 36 a. As shown in fig. 1, a plurality of arcuate recesses 36d arranged at intervals in the circumferential direction are formed on the outer peripheral surface of the 2 nd flange portion 36b by machining, and a plurality of openings 36e connected to the circular plate portion 38 are formed.

The winding main body 35 includes: a cylindrical winding part 35a around which a fishing line can be wound; a boss portion 37 rotatably supported by the spool shaft 2 on the inner peripheral side of the winding portion 35 a; and a disk portion 38 that connects the winding portion 35a and the boss portion 37. The boss portion 37 is a cylindrical member having a through hole 37a through which the spool shaft 2 can pass. The 1 st bearing 4 and the 2 nd bearing 5 attached to the spool shaft 2 are fitted in the through hole 37 a. The top end side of the boss portion 37 is covered with a cover member 34 constituting the spool attachment/detachment mechanism 6.

The through hole 37a of the boss portion 37 is formed such that the inner diameter thereof increases stepwise in 4 steps from the tip side to the base end side. The through hole 37a has a 1 st step 37d, a 2 nd step 37e, and a 3 rd step 37f in order from the top end side. When the spool 3 is mounted, the 1 st step 37d abuts against the outer ring 4b of the 1 st bearing 4. That is, the 1 st side surface 4c of the 1 st bearing 4 abuts the 1 st step 37 d. The 2 nd step 37e is provided for easily mounting the 1 st bearing 4 to the through hole 37 a. That is, the portion of the through hole 37a on the tip end side of the 2 nd step 37e is fitted into the 1 st bearing 4, but the portion on the base end side of the 2 nd step 37e has a diameter larger than the outer diameter of the 1 st bearing 4 and smaller than the outer diameter of the 2 nd bearing 5. When the spool 3 is mounted, the 3 rd step 37f abuts against the outer ring 5b of the 2 nd bearing 5.

A sound generating mechanism 22 that generates sound by rotation of the spool 3 is provided between the spool 3 and the spool shaft 2. The sounding mechanism 22 can be switched between the sounding position and the silent position by operating the operation member 29 shown in fig. 2.

Fig. 4 is a sectional view of the single-bearing reel according to embodiment 1. FIG. 4 is a cross section showing a cut line IV-IV of FIG. 1. The boss portion 37 has a pair of slits 37b formed through the outer peripheral surface and the inner peripheral surface of the boss portion 37 at the base end side of the 2 nd step 37 e. The pair of slits 37b are disposed facing each other with the rotation axis of the spool 3 interposed therebetween. The pair of slits 37b have notch surfaces 37c on both sides of the through portion, and the notch surfaces 37c are surfaces parallel to each other formed by cutting out a surface parallel to the rotation axis (see fig. 9). The slit 37b guides the detachable member 30 so that the detachable member 30 is movable in the radial direction but not movable in the axial direction.

The lid member 34 is screwed to the outer peripheral surface of the tip end of the boss portion 37. The cover member 34 is an example of a holding member of the spool attachment/detachment mechanism 6. The cap member 34 has a threaded portion 34a screwed into the top end outer peripheral surface of the boss portion 37, and a positioning portion 34c formed in a ring shape having a diameter larger than that of the threaded portion 34 a. The positioning portion 34c is provided to restrict the movement of the detachable member 30 outward in the radial direction.

The pair of detachable members 30 are attached to the slits 37 b. The pair of detachable members 30 are engaged with 1 annular spring 32, and the annular spring 32 biases the detachable members 30 toward the rotation axis of the spool 3. The detachable member 30 engages with the 2 nd side surface 4d of the 1 st bearing 4. Since the movement of the attachment member 30 in the axial direction with respect to the spool 3 is restricted by the slit 37b, the movement of the spool 3 in the axial direction with respect to the attachment member 30 engaged with the 2 nd-side surface 4d is restricted by the slit 37 b.

< Structure of spool dismounting mechanism >

Fig. 5 is a front view of the detachable member according to embodiment 1. Fig. 6 is a perspective view of the detachable member according to embodiment 1. The detachable member 30 is formed by bending in a substantially C-shape. The detachable member 30 includes a regulating portion 40, a pressing operation portion 42, a coupling portion 44, and a guide portion 46. The detachable member 30 is attached to the slit 37b of the spool 3 such that the first surface 30a faces the tip end side of the spool shaft 2. The restricting portion 40 is formed in a linear shape by bending from the connecting portion 44 to a position facing the pressing operation portion 42.

The restricting portion 40 has: a restricting surface 40a disposed to face the 2 nd side surface 4d of the 1 st bearing 4; and an inclined surface 40b located on the opposite side of the regulating surface 40 a. The regulating surface 40a is formed of a plane orthogonal to the rotation axis of the spool 3. The inclined surface 40b is formed of a flat surface whose distance from the regulating surface 40a increases toward the radially outer side. The restricting surface 40a is engaged with the 2 nd side surface 4d of the outer ring 4b of the 1 st bearing 4 to prevent the spool 3 from coming off the spool shaft 2. The reason why the inclined surface 40b is provided is that when the spool 3 detached from the spool shaft 2 is mounted on the spool shaft 2, the inclined surface 40b is brought into contact with a corner portion of the outer peripheral surface of the outer ring 4b of the 1 st bearing 4, and the pair of detachable members 30 are pressed in the direction of being separated from each other by the inclined shape. A retaining projection 40c projecting radially outward is formed on the radially outer surface of the restricting portion 40, and this retaining projection 40c retains the annular spring 32. The restricting portion 40 has a 1 st cylindrical surface 40d on an inner peripheral portion. The 1 st cylindrical surface 40d has an inner diameter slightly larger than the outer diameter of the boss portion 37.

The pressing operation portion 42 is provided for performing a pressing operation for moving the detachable member 30 from the regulation position to the disengagement position radially outward. The pressing operation portion 42 is formed to protrude radially outward from the connection portion 44. The pressing operation portion 42 is formed with a housing recess 42b, and the housing recess 42b is used for housing the holding projection 40c of the other detachable member 30 when the two detachable members 30 are arranged to face each other. The housing recess 42b is formed by being recessed from the inner peripheral surface 44a of the coupling portion 44 to the radially outer side in a substantially rectangular shape.

The connection portion 44 connects the regulating portion 40 and the pressing operation portion 42. The inner peripheral surface 44a of the coupling portion 44 has: a 2 nd cylindrical surface 44b and a flat surface 44c having an inner diameter slightly larger than the outer peripheral surface of the boss portion 37. The length of the flat surface portion 44c is substantially the same as the amount of movement of the detachable member 30. A step surface 44d, in which a flat surface portion 44c linearly extends, is formed at a boundary portion between the connection portion 44 and the thin limiting portion 40.

The guide portion 46 is formed by bending from the pressing operation portion 42 to the side opposite to the connection portion 44. The guide portion 46 is provided to engage with the restricting portion 40 to guide the pair of detachable members 30 in the radial direction. The total thickness of the regulating portion 40 and the thickness of the guide portion 46 is equal to the thickness of the connecting portion 44. When the two detachable members 30 are arranged such that the respective regulating portions 40 face each other, one regulating portion 40 is overlapped below the other guide portion 46, and the one regulating portion 40 is guided by the other guide portion 46. The guide portion 46 has a guide surface 46a at its distal end portion, and the guide surface 46a is parallel to and in contact with the stepped surface 44d of the other detachable member 30. The inner peripheral surface 46b of the guide portion 46 has the same inner diameter as the 2 nd cylindrical surface 44b, and overlaps with the extended shape of the 2 nd cylindrical surface 44 b.

A positioning projection 48 projecting from the 1 st surface 30a is formed on the 1 st surface 30a of the detachable member 30, and the positioning projection 48 is in contact with the cover member 34. The positioning projection 48 is formed so as to avoid the ring spring 32. The positioning projection 48 abuts on the cover member 34, and the detachable member 30 is held by the boss portion 37.

Fig. 7 is a perspective view of a ring spring according to embodiment 1. The ring spring 32 has: 2 engaging portions 32a facing each other and engaged with the holding projections 40c of the detachable member 30; and 2 coupling parts 32b facing each other and coupling the engaging parts 32 a. The ring spring 32 is formed of one wire. In embodiment 1, the ring spring 32 is not a seamless ring, but has a shape in which a gap 32c is cut at one position. Here, the non-seamless ring spring having the gap 32c left at one position is also referred to as a ring spring. The ring spring 32 may have a seamless circular ring shape without a gap 32 c.

When the ring spring 32 moves the engagement portions 32a away from each other from the released free state, biasing forces in the approaching direction act on the engagement portions 32 a. When the coupling portions 32b are compressed so as to approach each other, the engagement portions 32a can be expanded so as to be away from each other.

Conversely, when the ring spring 32 moves the engagement portions 32a closer to each other from the released free state, the engagement portions 32a are biased in the direction away from each other. When the coupling portions 32b are expanded so as to be separated from each other, the engagement portions 32a can be brought close to each other.

Fig. 8 is a perspective view of a pair of detachable members according to embodiment 1. Fig. 8 shows the pair of detachable members 30 attached to the boss portion 37, and only the detachable members 30 in the restricted position state. The positioning projection 48 is not shown in fig. 8.

In the state of fig. 8, the regulating portion 40 is fitted into the slit 37b of the boss portion 37, and the regulating surface 40a is located at a position to engage with the 2 nd side surface 4d of the 1 st bearing 4. In this state, the 1 st cylindrical surface 40d of the regulating portion 40 abuts against the outer peripheral surface of the boss portion 37, and the regulating portions 40 are not brought closer to each other than the state of fig. 8.

In a state where the pair of detachable members 30 are attached to the slits 37b of the boss portion 37 and held at the positions shown in fig. 8, the annular spring 32 is fitted from the top side of the boss portion 37, that is, in fig. 8, so that the engaging portion 32a engages with the holding projection 40 c. In the released free state of the ring spring 32, the distance between the two engaging portions 32a is smaller than the distance between the holding projections 40c when the restricting portions 40 of the pair of detachable members 30 are at the restricting positions close to each other. When the coupling portions 32b are compressed in the direction of approaching each other, the engagement portions 32a can expand so as to be away from each other. In a state where the engaging portions 32a are expanded away from each other, when the engaging portions 32a are inserted into the accommodating recess 42b and the force for compressing the coupling portions 32b is released, the two engaging portions 32a can be engaged with the holding projection 40c, respectively.

After the ring spring 32 is mounted, the cover member 34 is mounted. The cover member 34 covers the detachable member 30 and the annular spring 32 except the pressing operation portion 42, and only the pressing operation portion 42 (see fig. 1) is visible from the distal end side of the spool 3.

Fig. 9 is a sectional view of the spool attachment/detachment mechanism according to embodiment 1. Fig. 9 shows a section cut by the cutting line IX-IX of fig. 3. The pair of attaching/detaching members 30 are disposed so that the respective regulating portions 40 face each other with the spool shaft 2 interposed therebetween. Fig. 9 shows a state where the detachable member 30 is in the restricting position.

In fig. 9, the drop-off preventing bolt 18, the female screw hole 2a, the 1 st bearing attachment portion 2b (broken line), the 2 nd bearing attachment portion 2c, the inner ring 4a of the 1 st bearing 4 (broken line), the spacer sleeve 20, the outer ring 4b, and the boss portion 37 are illustrated in order from the center. The regulating portion 40 of the detachable member 30 is disposed in the slit 37b of the boss portion 37. The guide portion 46 of one detachable member 30 is located on the back side of the other regulating portion 40 on the paper surface, and contacts the surface of the regulating surface 40a of the regulating portion 40. The ring springs 32 are held by the holding projections 40c, and bias the restricting portions 40 toward the spool shaft 2.

In the state of fig. 9, the 1 st cylindrical surface 40d of the regulating portion 40 abuts against the outer peripheral surface of the boss portion 37, or the linear portion of the regulating portion 40 on the side of the coupling portion 44 abuts against the notched surface 37c of the boss portion 37. The regulating portion 40 enters the through hole 37a of the boss portion 37 from the penetrating portion of the slit 37b, and the regulating surface 40a is engaged with the 2 nd side surface 4d of the outer ring 4 b. Since the movement of the attachment member 30 in the axial direction with respect to the spool 3 is restricted by the slit 37b, the movement of the spool 3 in the axial direction with respect to the attachment member 30 engaged with the 2 nd-side surface 4d is restricted by the slit 37 b.

In each detachable member 30, the pressing operation portion 42 is located at a position facing the spool shaft 2 via the regulating portion 40, and the regulating portion 40 is biased toward the spool shaft 2 by the ring spring 32 and located at a position close to the spool shaft 2, so that the pressing operation portion 42 is located at a position away from the spool shaft 2.

Fig. 10 is a sectional view of the spool attachment/detachment mechanism according to embodiment 1 during the pressing operation. FIG. 10 shows a cross section cut by a cutting line IX-IX of FIG. 3, like FIG. 9. Fig. 10 shows a state where the detachable member 30 is at the detached position.

In each detachable member 30, the restricting portion 40 is located at a position facing the spool shaft 2 via the pressing operation portion 42, and when the pressing operation portions 42 of the pair of detachable members 30 are pressed in a direction approaching each other in accordance with the state of fig. 9, the restricting portion 40 moves radially outward from the spool shaft 2. In this way, the restricting portion 40 can be disengaged from the outer ring 4b of the 1 st bearing 4. In the state of fig. 10, the spool 3 can be disengaged from the spool shaft 2 because the regulating surface 40a of the regulating portion 40 is not engaged with the 2 nd side surface 4 d.

At this time, since the detachable member 30 is held by the cover member 34, the detachable member 30 does not come off the boss portion 37. Further, the one holding projection 40c enters the other housing recess 42b, and the pair of detachable members 30 do not interfere with each other.

In embodiment 1, in the released free state of the annular spring 32, the distance between the two engaging portions 32a is smaller than the distance between the holding projections 40c when the restricting portions 40 of the pair of detachable members 30 are at the restricting positions close to each other. Even if the inner dimensions of the coupling portions 32b are not smaller than the outer diameter of the boss portion 37, the two engaging portions 32a can be separated from each other to a position where the restricting portion 40 is separated from the 2 nd side surface 4 d.

When the force for pressing the pressing operation portion 42 is released from the state of fig. 10, the state of fig. 9 is restored by the restoring force of the ring spring 32. In this way, the spool 3 can be attached to the spool shaft 2. Alternatively, when the spool shaft 2 is inserted into the through hole 37a of the boss 37 without pressing the pressing operation portion 42 with the spool 3 detached, the detachable member 30 returns to the position of fig. 9, and therefore the inclined surface 40b of the regulating portion 40 abuts against the corner portion of the 1 st surface 4c of the outer ring 4b of the 1 st bearing 4. When the boss portion 37 is directly pushed in this state, the detachable member 30 moves radially outward by the inclined surface 40b and slides on the outer peripheral surface of the outer ring 4b, whereby the regulating surface 40a can be engaged with the 2 nd side surface 4 d.

In the spool attachment/detachment mechanism 6 according to embodiment 1, the pair of attachment/detachment members 30 are biased toward the rotation shaft of the spool 3 by 1 ring spring 32. The spool attachment/detachment mechanism 6 according to embodiment 1 can be attached only by fitting the annular spring 32 into the holding projection 40c of the attachment/detachment member 30 in a state where the pair of attachment/detachment members 30 are disposed in the slits 37b of the boss portion 37.

Further, the ring spring 32 is not limited to the shape of fig. 7. For example, the wire rod is not limited to a wire rod, and may be formed by processing a plate material. As described above, there may be no gap 32 c. For example, the wire rod may be processed into a shape shown in fig. 7, and then the gap 32c may be welded and connected. The engaging portion 32a is not limited to the engaging portion 32a formed by bending, and the engaging portion 32a may be formed by insert molding, for example. In addition, the "ring shape" of the ring spring does not mean around the entire circumference. For example, the engaging portion 32a may be coupled by one of the coupling portions 32b, instead of coupling the engaging portions 32a by the two coupling portions 32 b. In this case, the gap 32c is not formed in both the engaging portions 32a, and the omitted portion of the coupling portion 32b corresponds to the gap 32 c.

In addition, the lid member 34 may be configured not to be fixed to the boss portion 37 by the screw portion 34a, but, for example, an annular concave portion may be formed in the lid member 34, an annular convex portion formed in the boss portion 37 may be engaged with the annular concave portion, and the concave portion and the convex portion may be fitted by elastically deforming.

The positioning projection 48 of the detachable member 30 is not limited to the shape shown in fig. 5 and 6. In addition, the positioning projection 48 may not be provided. In this case, the annular spring 32 contacts the cover member 34, and the detachable member 30 is indirectly held by the annular spring 32.

Embodiment mode 2

Fig. 11 is a perspective view of a ring spring according to embodiment 2 of the present invention. In embodiment 2, the spool attachment/detachment mechanism 6 includes only 1 attachment/detachment member 30.

In the ring spring 32 of embodiment 2, instead of 1 engaging portion 32a out of the pair of engaging portions 32a of the ring spring 32 of embodiment 1, a fitting portion 32d is formed. The fitting portion 32d is fitted into the slit 37b of the boss portion 37. A gap 32c is also formed in the ring spring 32 of fig. 11. The gap 32c may be formed in the fitting portion 32d instead of the engaging portion 32 a. In addition, the ring spring 32 may be a seamless ring without the gap 32 c.

Fig. 12 is a sectional view of the spool attachment/detachment mechanism according to embodiment 2. FIG. 12 is a cross section taken along the cutting line IX-IX of FIG. 3, like FIG. 9. In embodiment 2, 1 detachable member 30 is attached to the boss portion 37. The engaging portion 32a of the ring spring 32 is engaged with the holding projection 40 c. The fitting portion 32d is fitted into the other slit 37b opposite to the slit 37b into which the regulating portion 40 is inserted.

In embodiment 2, in the state of fig. 12, the annular spring 32 is formed so that the regulating portion 40 is biased toward the spool shaft 2. The restricting portion 40 enters the through hole 37a from the penetrating portion of the slit 37b, and engages with the 2 nd surface 4d of the outer ring 4 b.

In embodiment 2, the ring spring 32 can be attached from the tip end side of the boss portion 37 in a state where the detachable member 30 is attached to the boss portion 37 and held at the regulation position. After the ring spring 32 is mounted, the cover member 34 is mounted. The cover member 34 covers the detachable member 30 and the annular spring 32 except the pressing operation portion 42, and only the pressing operation portion 42 (see fig. 1) is visible from the distal end side of the spool 3.

From the regulation position, the pressing operation portion 42 and the cover member 34 are pressed by fingers at a position facing the pressing operation portion 42 via the rotation axis, and the regulation portion 40 can be separated from the 2 nd side surface 4d by pressing the pressing operation portion 42 toward the spool shaft 2. At this time, the fitting portion 32d of the ring spring 32 is pressed by the coupling portion 44 and the guide portion 46, and does not come off the slit 37 b.

In embodiment 2, the number of parts is reduced, and assembly is easier. In addition, the "ring shape" of the ring spring does not mean around the entire circumference. For example, instead of the engaging portion 32a and the fitting portion 32d being connected by the two connecting portions 32b, either one of the connecting portions 32b may be used to connect the engaging portion 32a and the fitting portion 32 d. In this case, the gap 32c is not formed in both the engaging portion 32a and the fitting portion 32d, and the omitted portion of the coupling portion 32b corresponds to the gap 32 c.

Embodiment 3

Fig. 13 is a sectional view of the spool attachment/detachment mechanism according to embodiment 3 of the present invention. In embodiment 3, the ring spring 32 biases the pressing operation portion 42 radially outward, not directly to the restricting portion 40, but indirectly to the restricting portion 40 radially inward.

In embodiment 3, the detachable member 30 has a holding projection 42c on the inner side of the pressing operation portion 42 instead of the holding projection 40 c. The ring spring 32 according to embodiment 3 has the same shape as the ring spring 32 shown in fig. 7, but the distance between the engaging portions 32a is different. In embodiment 3, in the released free state of the annular spring 32, the distance between the two engaging portions 32a is larger than the distance between the holding projections 42c when the restricting portions 40 of the pair of detachable members 30 are at the restricting positions close to each other. Even if the coupling portions 32b do not have an inner dimension smaller than the outer diameter of the boss portion 37, the two engagement portions 32a can be separated from each other at the position where the restriction portion 40 engages with the 2 nd side surface 4 d. Therefore, the ring spring 32 can be attached from the tip end side of the boss portion 37 by holding the pair of detachable members 30 in the state of fig. 13.

As shown in fig. 13, the ring spring 32 is engaged with and held by a holding projection 42c formed on the inner side of the pressing operation portion 42. In the released free state of the ring spring 32, the distance between the two engaging portions 32a is larger than the distance between the holding projections 42c when the pair of detachable members 30 are at the restricting positions, and therefore, in the state of fig. 13, the pressing operation portions 42 are biased in the direction of separating from each other.

In each of the pair of detachable members 30, since the regulating portion 40 is disposed at a position facing the pressing operation portion 42 across the rotation axis of the spool 3, when the pressing operation portion 42 is biased in a direction away from the rotation axis, the regulating portion 40 is biased in a direction approaching the rotation axis. Therefore, the operation of the pair of detachable members 30 is the same as that of embodiment 1.

In a state where the pair of detachable members 30 are attached to the slits 37b of the boss portion 37 and held at the positions shown in fig. 13, the annular spring 32 is fitted from the tip end side of the boss portion 37 so that the engaging portion 32a engages with the holding projection 42 c. In the released free state of the annular spring 32, the distance between the two engaging portions 32a is larger than the distance between the holding projections 42c when the pair of detachable members 30 are at the restricting positions. When the connecting portions 32b are expanded in a direction away from each other, the engaging portions 32a can be compressed to approach each other. Alternatively, the engaging portions 32a may be compressed to be directly adjacent to each other. When the engaging portions 32a are inserted into the accommodating recess 42b in a state in which the engaging portions 32a are compressed to be close to each other, and the force for expanding the coupling portions 32b from each other is released, the engaging portions 32a can be engaged with the holding projections 42c, respectively.

Fig. 14 is a sectional view of the spool attachment/detachment mechanism according to embodiment 3 during the pressing operation. FIG. 14 is a cross section taken along the cutting line IX-IX of FIG. 3, as in FIG. 9. Fig. 14 shows a state where the detachable member 30 is at the disengaged position.

In each of the pair of detachable members 30, the restricting portion 40 is located at a position facing the pressing operation portion 42 across the spool shaft 2, and when the pressing operation portions 42 of the pair of detachable members 30 are pressed in a direction approaching each other from the state shown in fig. 13, the restricting portion 40 moves radially outward from the spool shaft 2. In this way, the restricting portion 40 can be disengaged from the outer ring 4b of the 1 st bearing 4. In the state of fig. 14, the spool 3 can be disengaged from the spool shaft 2 because the regulating surface 40a of the regulating portion 40 is not engaged with the 2 nd side surface 4 d. At this time, since the detachable member 30 is held by the cover member 34, the attached member 30 does not come off the boss portion 37.

In embodiment 3, the ring spring 32 may not be wound around the entire circumference. For example, instead of the two coupling portions 32b coupling the two engagement portions 32a, one of the coupling portions 32b may couple the engagement portions 32 a. In this case, the gap 32c is not formed in the engaging portion 32a, and the omitted portion of the coupling portion 32b corresponds to the gap 32 c.

Embodiment 4

Fig. 15 is a sectional view of the spool attachment/detachment mechanism according to embodiment 4 of the present invention. FIG. 15 shows a cross section cut by a cutting line IX-IX of FIG. 3. Embodiment 4 is a structure in which the detachable member and the annular spring are formed integrally.

The annular spring 33 according to embodiment 4 has the function of the detachable member 30 and the annular spring 32. The annular spring 33 is formed by an annular spring member. The annular spring 33 has two restricting portions 50 and two pressing operation portions 33 b. The two restricting portions 50 are disposed at positions facing each other of the annular springs 33. The two pressing operation portions 33b are disposed at positions of the annular springs 33 facing each other. The line connecting the restricting portions 50 is orthogonal to the line connecting the pressing operation portions 33 b. When compared with the annular spring 32 of embodiment 1, the restricting portion 50 corresponds to the engaging portion 32a, and the pressing operation portion 33b corresponds to the connecting portion 32 b.

In the released free state of the annular spring 33, the inner dimensions of the two restricting portions 50 are smaller than the inner diameter of the outer ring 4b of the 1 st bearing 4. In the state of fig. 15, the ring spring 33 is in a state of separating the restricting portions 50 from each other from the released state, and therefore, the restricting portions 50 are urged in the direction of approaching each other. The inner periphery of the annular spring 33 is in contact with the corner of the notched surface 37c of the slit 37b and is in a stable state.

The annular spring 33 moves the restricting portions 50 away from each other when the pressing operation portions 33b are pressed toward each other, that is, toward the rotation axis of the spool 3. That is, the restricting portion 50 is moved in a direction away from the 2 nd surface 4d of the outer ring 4 b.

Fig. 16 is a sectional view of the spool attachment/detachment mechanism when the ring spring according to embodiment 4 is attached. FIG. 16 is a cross section taken along the cutting line IX-IX of FIG. 3, like FIG. 15. The length of the virtual inner circumference VC of the annular spring 33 passing through the radially inner tip of the regulating portion 50 and the radially inner circumference of the pressing operation portion 33b is greater than the length of the outer circumference of the cross section of the boss portion 37. Therefore, the pressing operation portions 33b are pressed in the direction of approaching each other, and deformed as shown in fig. 16, so that the boss portion 37 can be inserted therethrough. The deformation of the ring spring 33 is restored to the original shape at the position of the slit 37b, and the ring spring 33 can be attached to the restricted position as shown in fig. 15.

After the ring spring 33 is attached to the slit 37b, the cover member 34 is attached to the tip end of the boss portion 37. If the outer diameter of the cover member 34 is made larger than the outer dimension of the pressing operation portions 33b when the ring spring 33 is attached, the ring spring 33 cannot be deformed and the ring spring 33 cannot be disengaged until the distance between the regulating portions 50 from the outside of the cover member 34 is made larger than the outer diameter of the boss portion 37. The annular spring 33 may be formed with a curved portion that abuts against the outer periphery of the cover member 34 when the pressing operation portions 33b are pressed against each other.

Fig. 17 is a perspective view showing an example of the ring spring according to embodiment 4. In the ring spring 33 of fig. 17, the restricting portion 50 is formed by insert molding, for example, on the ring spring. The ring spring can be formed by processing 1 wire, for example, as in the ring spring 32 of fig. 7. When the annular spring has the gap 32c, the gap 32c can be disposed in the restriction portion 50 which is insert-molded. In addition, if the ring spring is bent in the restriction portion 50, the restriction portion 50 cannot rotate around the spring member.

In the ring spring 33 of fig. 17, the pressing operation portion 33b is formed as a curved portion rising from the surface of the ring spring. In a state where the annular spring 33 is attached to the boss portion 37 and the lid member 34 is attached, the distance between the pressing operation portions 33b cannot be made smaller than the outer diameter of the lid member 34. As a result, the ring spring 33 is held by the cover member 34.

The restriction portion 50 has: a restricting surface 50a disposed to face the 2 nd side surface 4d of the 1 st bearing 4; and an inclined surface 50b located on the opposite side of the regulating surface 50 a. The regulating surface 50a is formed of a plane orthogonal to the rotation axis of the spool 3. The inclined surface 50b is formed of a flat surface whose distance from the regulating surface 50a increases toward the radially outer side. The restricting surface 50a is engaged with the 2 nd side surface 4d of the outer ring 4b of the 1 st bearing 4 to prevent the spool 3 from falling off from the spool shaft 2. The inclined surface 50b is provided because, when the spool 3 detached from the spool shaft 2 is attached to the spool shaft 2, the inclined surface 50b is brought into contact with a corner portion of the outer peripheral surface of the outer ring 4b of the 1 st bearing 4, and the regulating portion 50 is pressed in the direction of separation by the inclined shape.

In the spool attachment/detachment mechanism 6 according to embodiment 4, the attachment/detachment member and the annular spring are formed integrally, so that the number of parts can be further reduced, and the assembly can be facilitated.

In the above-described embodiment, the rolling bearing as the projection, that is, the 1 st bearing 4 is described as an example, but the present invention is not limited to this. The projection may also be a sliding bearing. Further, the projection may be formed integrally with the spool shaft. In particular, when the projection is made of synthetic resin, the projection can be used as a bearing as well, and the projection can be easily integrated with the spool shaft. Further, the protrusion may be provided integrally with the spool shaft by a molding method such as insert molding.

In the embodiment, the single-bearing reel 100 in which the handle grip 54 is provided on the spool 3 has been described, but the spool attachment/detachment mechanism of the present invention can also be applied to a fishing reel in which the spool is attachable to and detachable from the free end portion of the spool shaft. For example, the spool attachment/detachment mechanism of the present invention can be applied to a single-bearing reel having a built-in drive mechanism in which a handle grip is provided on the side opposite to the spool of the reel unit. In addition, the spool attachment/detachment mechanism of the present invention can be applied to a spinning reel.

Claims

1. A spool attachment/detachment mechanism for a fishing reel, capable of attaching/detaching a spool of the fishing reel to/from a spool shaft,

comprising:

a protrusion protruding from a free end of the spool shaft in a radial direction of the spool shaft and having a 1 st side surface and a 2 nd side surface, wherein the 1 st side surface faces a free end surface of the spool shaft, and the 2 nd side surface faces a support portion side opposite to the free end surface of the spool shaft;

at least 1 detachable member attached to the spool and having a restricting portion and an operating portion, wherein the restricting portion has a surface capable of facing the 2 nd side surface and is capable of engaging with the protruding portion, and the operating portion moves the restricting portion in a direction away from the protruding portion when pressed against the rotation shaft of the spool;

an annular spring that biases the regulating portion toward the rotation shaft in a radial direction of the spool; and

and a holding member for holding the detachable member at the mounting position of the spool.

2. The spool dismounting mechanism according to claim 1, wherein,

the removable member is attached to a slit which penetrates from an outer peripheral surface to an inner peripheral surface of a cylindrical boss portion provided in a spool body portion of the spool,

the movement of the spool in the axial direction of the spool with respect to the attachment/detachment member engaged with the protrusion is restricted by the slit.

3. The spool dismounting mechanism according to claim 1, wherein,

the holding member is fixed to a tip end of the spool in a rotation axis direction, and holds the detachable member at an attachment position of the spool.

4. The spool dismounting mechanism according to claim 2, wherein,

5. A spool dismounting mechanism according to any one of claims 1 to 4,

the projection is a rolling bearing mounted on the free end of the spool shaft so as to be immovable in the axial direction,

the 2 nd side surface is a surface of an outer ring of the rolling bearing facing the support portion side.

6. A spool dismounting mechanism according to any one of claims 1 to 4,

a pair of the attaching and detaching members are attached to the spool so as to face each other in a radial direction with a rotation shaft of the spool interposed therebetween,

the ring spring biases the restricting portions of the pair of detachable members in a direction in which the restricting portions approach each other.

7. The spool dismounting mechanism according to claim 6, wherein,

the regulating portion and the operating portion of each attaching and detaching member are disposed at positions facing each other with the rotation axis of the spool interposed therebetween,

the removable members each have a coupling portion that is bent outward in a radial direction of the rotation shaft of the spool to couple the regulating portion and the operating portion,

the annular spring is engaged with a radial outer side of the restricting portion, and biases the restricting portions of the pair of detachable members in a direction in which the restricting portions approach each other.

8. The spool dismounting mechanism according to claim 6, wherein,

the annular spring is engaged with a radially inner side of the operation portion, and biases the operation portions of the pair of detachable members in directions away from each other.

9. A spool dismounting mechanism according to any one of claims 1 to 4,

the ring spring is formed of one wire.

10. A spool dismounting mechanism according to any one of claims 1 to 4,

the detachable member and the annular spring are formed integrally.

11. A spool dismounting mechanism according to any one of claims 1 to 4,

the restricting portion has: a regulating surface arranged to face the 2 nd side surface; and an inclined surface that is disposed on the opposite side of the regulating surface, and that has a greater distance from the regulating surface toward the radially outer side.

12. A single-bearing fishing reel is characterized in that,

comprising:

a reel unit;

a spool shaft supported by the reel unit in a cantilever manner;

a 1 st bearing as a projection portion, which is arranged on a free end portion of the spool shaft so as to be prevented from falling off;

a 2 nd bearing disposed on the cantilever-supported side of the 1 st bearing;

a spool for a winding, which has a spool main body and a cylindrical boss portion, wherein the boss portion is integrally formed with the spool main body, is disposed on an inner peripheral side of the spool main body, and is rotatably supported by the spool shaft via the 1 st bearing and the 2 nd bearing; and

the spool dismounting mechanism of any one of claims 1 to 10.