CN110012882B

CN110012882B - Bearing holding structure of fishing reel and fishing reel

Info

Publication number: CN110012882B
Application number: CN201811401686.XA
Authority: CN
Inventors: 大古濑广树
Original assignee: Shimano Inc
Current assignee: Shimano Inc
Priority date: 2017-12-06
Filing date: 2018-11-22
Publication date: 2022-02-25
Anticipated expiration: 2038-11-22
Also published as: KR20190067082A; JP2019097522A; CN110012882A; KR102638045B1; JP7064323B2

Abstract

The utility model provides a fishing reel for fishing. The bearing holding structure of the fishing reel comprises a bearing, a cylindrical holding part and an O-shaped ring, wherein a spool shaft of the fishing reel is inserted into an inner ring of the bearing, and the spool shaft is rotatably supported by the bearing; a cylindrical holding portion which holds the bearing by housing the bearing therein and has an inner peripheral surface facing an outer peripheral surface of the bearing; the O-ring is interposed between the outer peripheral surface of the bearing and the inner peripheral surface of the holding portion, and an annular groove into which the O-ring is fitted is formed in the outer peripheral surface of the bearing. According to the present invention, the vibration absorbing performance of the rotating shaft can be maintained, and the assemblability of the bearing holding structure can be improved.

Description

Bearing holding structure of fishing reel and fishing reel

Technical Field

The present invention relates to a bearing holding structure for a fishing reel and a fishing reel.

Background

In fishing reels, particularly dual-bearing reels, an O-ring is interposed between the outer peripheral surface of a bearing and the inner peripheral surface of a cylinder that holds the bearing in order to absorb vibrations.

For example, patent document 1 describes a dual-bearing fishing reel in which a spool shaft is rotatably supported on a reel side plate via a bearing (bearing), wherein a groove is provided in the circumferential direction on the inner circumferential surface of a bearing housing portion, and an O-ring made of an elastic body having an inner diameter smaller than the outer diameter of the bearing is fitted into the groove to press and hold the bearing.

In the fishing reel of patent document 2, a circumferential groove is formed in each of the inner peripheral surface of the cylindrical portion of the right side frame at the waterproof bearing position, the inner peripheral surface of the recess of the bearing structure mounted in the side plate, the inner peripheral surface of the through hole, and the outer peripheral surface of the other end of the pinion gear, and an O-ring-shaped elastic body is fitted thereto.

[ Prior art documents ]

[ patent document ]

Patent document 1: japanese patent laid-open No. 55-131673

Patent document 2: japanese patent laid-open publication No. 2001-95438

Disclosure of Invention

[ technical problem to be solved by the utility model ]

In the technique of the patent document, a groove for fitting an O-ring is formed in an inner peripheral surface of a cylindrical portion in which a bearing is accommodated. When a groove is formed in the inner circumferential surface of the cylinder, it is difficult to produce the groove with high accuracy. If the inner diameter of the groove is large, a gap is formed between the groove and the O-ring, thereby causing a decrease in vibration absorbing performance. If the inner diameter of the groove is small, the O-ring is deformed greatly, and the assembly is difficult. Depending on the situation, the O-ring may be damaged during assembly.

The present invention has been made in view of the above circumstances, and an object thereof is to improve the assemblability of a bearing holding structure in a fishing reel while maintaining the vibration absorbing performance of a rotation shaft.

[ technical means for solving problems ]

A bearing holding structure of a fishing reel according to a first aspect of the present invention includes a bearing, a cylindrical holding portion, and an O-ring, wherein a rotation shaft of the fishing reel is inserted through an inner ring of the bearing, and the bearing rotatably supports the rotation shaft; a cylindrical holding portion which holds the bearing by housing the bearing therein and has an inner peripheral surface facing an outer peripheral surface of the bearing; the O-ring is interposed between the outer peripheral surface of the bearing and the inner peripheral surface of the holding portion, and an annular groove into which the O-ring is fitted is formed in the outer peripheral surface of the bearing.

Preferably, an opening inclined surface is formed around the opening of the holding portion for inserting the bearing, and a diameter of the opening inclined surface increases from a position where the bearing is held toward an outside of the opening.

Preferably, a spring groove extending in the circumferential direction is formed in the inner circumferential surface of the holding portion, the spring groove holding a retaining spring for preventing the bearing from coming off, and a groove inclined surface having a diameter increasing from a position where the bearing is held toward an opening for inserting the bearing in the holding portion is formed along the entire circumference (within the entire circumference range) of a corner of the spring groove on the side where the bearing is held.

A fishing reel according to a second aspect of the present invention includes a reel unit mounted on a fishing rod, a spool, and a bearing holding structure of the fishing reel according to the first aspect; a spool rotatably supported by the reel unit, the fishing line being wound around the outer periphery of the spool; the bearing holding structure of the fishing reel according to the first aspect rotatably supports the rotation shaft that winds the fishing line around the spool.

[ Effect of the utility model ]

According to the present invention, in the fishing reel, the vibration absorbing performance of the rotation shaft can be maintained, and the assembling performance of the bearing holding structure can be improved.

Drawings

Fig. 1 is a perspective view of a fishing reel according to a first embodiment of the present invention.

Fig. 2 is a sectional view of the fishing reel according to the first embodiment.

Fig. 3 is an enlarged cross-sectional view of a bearing holding structure according to a first embodiment.

Fig. 4A is a cross-sectional view showing an example of an opening inclined surface of a bearing holding structure according to the first embodiment.

Fig. 4B is a cross-sectional view showing an example of an opening inclined surface of the bearing holding structure according to the first embodiment.

Fig. 4C is a cross-sectional view showing an example of an opening inclined surface of the bearing holding structure according to the first embodiment.

Fig. 4D is a cross-sectional view showing an example of an opening inclined surface of the bearing holding structure according to the first embodiment.

Fig. 5 is an enlarged cross-sectional view of a bearing holding structure according to a second embodiment of the present invention.

Fig. 6 is a perspective cross-sectional view of a bearing holding structure according to a second embodiment.

Fig. 7A is a cross-sectional view showing an example of a groove inclined surface of the bearing holding structure according to the second embodiment.

Fig. 7B is a cross-sectional view showing an example of a groove inclined surface of the bearing holding structure according to the second embodiment.

Fig. 7C is a cross-sectional view showing an example of a groove inclined surface of the bearing holding structure according to the second embodiment.

Fig. 7D is a cross-sectional view showing an example of a groove inclined surface of the bearing holding structure according to the second embodiment.

Fig. 8 is an enlarged cross-sectional view showing a modification of the bearing holding structure according to the second embodiment.

Fig. 9 is a sectional view of a fishing reel according to a third embodiment of the present invention.

[ description of reference ]

1: a reel unit; 2: a handle; 5: a frame; 6: a first side cover; 7: a second side cover; 8: a first side plate; 9: a second side plate; 12: a spool; 16: a spool shaft; 18: a gear mechanism; 50: a brake case (brake case); 51: a holding section; 52: an opening inclined surface; 53: a spring slot; 54: a groove inclined surface; 55: a cover member; 71. 72, 73, 74, 75, 76, 77, 78, 79: a bearing; 81: an annular groove; 82: an O-shaped ring; 83: an anti-drop spring; 99: a dual-bearing fishing reel; 100: spinning reel (spinning reel); 101: a reel unit; 102: a spool shaft; 103: a pinion gear; 111: a rotor; 112: a spool; 113: a handle; 116: a drag mechanism; 130: a handle shaft.

Detailed Description

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

The first embodiment is described.

Fig. 1 is a perspective view of a fishing reel according to a first embodiment of the present invention. The fishing reel is a dual-bearing reel 99 mainly used for lure fishing. The dual-bearing reel 99 includes: a reel unit 1; a handle 2 disposed on a side of the reel unit 1; and a star drag mechanism (star drag)3 for adjusting drag (drag) and disposed on the handle 2 on the reel unit 1 side. A spool 12 for winding a fishing line is rotatably supported by the reel unit 1. The spool 12 is disposed between the first side cover 6 and the second side cover 7. When the handle 2 is turned, the spool 12 is rotated, and the fishing line can be wound. The handle 2 has: a plate-like arm portion 2 a; and a pair of handles 2b rotatably attached to both ends of the arm portion 2 a.

The dual-bearing reel 99 is attached to the fishing rod so that the left-hand front side in fig. 1 faces the tip end (front) of the fishing rod. The fishing line is normally drawn out from the spool 12 toward the front left side in fig. 1. In fig. 1, the left-hand front side is referred to as the front of the reel unit 1, and the right-hand depth side is referred to as the rear. A clutch lever 17 is disposed behind the reel unit 1. When the clutch operation lever 17 is operated, the clutch between the handle 2 and the spool 12 can be disconnected. A thumb rest 10 is attached so as to surround the front side of the spool 12.

When a fishing line wound on the spool 12 is paid out by a bait casting (casting) action, the spool 12 is rotated. In order to prevent the fishing line from tangling (backlash) during the bait casting operation, a spool braking device is provided inside the reel unit 1. An operation knob 65 for adjusting the braking force of the spool brake device is disposed on the first side cover 6 of the reel unit 1 on the side opposite to the handle 2. By rotating the operation knob 65, the force for braking the spool 12 can be adjusted.

Fig. 2 is a sectional view of the fishing reel according to the first embodiment. When fig. 2 is viewed from the direction in which the characters are upright, the upper side is the front side, and the lower side is the rear side. In fig. 2, the brake device is omitted. The reel unit 1 includes a frame 5, and a first side cover 6 and a second side cover 7 attached to both sides of the frame 5. The frame 5 includes a pair of first and

second side plates

8, 9, and a plurality of coupling portions, not shown, in which the pair of first and

second side plates

8, 9 are disposed so as to face each other with a space therebetween; the plurality of coupling portions, not shown, couple the first side plate 8 and the second side plate 9.

The second side cover 7 on the handle 2 side is fixed to the second side plate 9 by screws. An opening 8a through which the spool 12 can pass is formed in the first side plate 8 on the opposite side of the handle 2. A brake case 50 is fitted into the first side cover 6 on the opposite side of the handle 2.

A spool 12, a level winding mechanism 15, and a clutch lever 17 are disposed in the frame 5. The level winding mechanism 15 is a mechanism for uniformly winding the fishing line around the spool 12.

A gear mechanism 18, a clutch mechanism 13, and a clutch engaging/disengaging mechanism 19 are disposed between the second side plate 9 and the second side cover 7 of the frame 5. The gear mechanism 18 transmits the rotational force from the handle 2 to the spool 12 and the level winding mechanism 15. The clutch engaging/disengaging mechanism 19 engages and disengages the clutch mechanism 13 in response to the operation of the clutch lever 17.

The spool 12 has a cylindrical boss 12c integrally formed on the inner peripheral side. The spool 12 is fixed by spline (serration), for example, so as not to rotate relative to the spool shaft 16 penetrating the boss 12 c.

The spool shaft 16 penetrates the second side plate 9 and extends outward of the second side cover 7. One end of the spool shaft 16 close to the handle 2 is rotatably supported by the second side cover 7 via a bearing 72. One end of the spool shaft 16 close to the first side cover 6 is rotatably supported by the brake case 50 via a bearing 71.

When the handle 2 is turned, the rotation is transmitted to the spool shaft 16 through the gear mechanism 18 and the clutch mechanism 13. When the clutch lever 17 is operated, the clutch mechanism 13 can be disconnected. When the clutch mechanism 13 is disengaged, the spool shaft 16 and the spool 12 can be freely rotated without being linked to the handle 2. When the clutch mechanism 13 is disconnected and bait casting is performed, the spool 12 is freely rotated to release the fishing line.

The brake case 50 is formed with a cylindrical holding portion 51 extending toward the center of the spool 12. The bearing 71 is housed and held in the holding portion 51 of the brake case 50. An O-ring 82 is interposed between the outer peripheral surface of the bearing 71 and the inner peripheral surface of the holding portion 51.

Fig. 3 is an enlarged cross-sectional view of a bearing holding structure according to a first embodiment. The inner circumferential surface of the cylindrical holding portion 51 formed in the brake case 50 is a cylindrical surface, and the cylindrical holding portion 51 has a size in which the bearing 71 is fitted. The bearing 71 is housed and held in the holding portion 51. In a state where the bearing 71 is held, the outer peripheral surface of the bearing 71 faces the inner peripheral surface of the holding portion 51. The spool shaft is inserted through an inner ring of the bearing 71 and is rotatably supported by the bearing 71.

An annular groove 81 for fitting an O-ring 82 is formed on the outer peripheral surface of the bearing 71 over the entire circumference. The O-ring 82 is fitted into the annular groove 81 for retention. An O-ring 82 is interposed between the outer peripheral surface of the bearing 71 and the inner peripheral surface of the holding portion 51. No groove is formed in the inner peripheral surface of the holding portion 51. An opening inclined surface 52 is formed around the opening of the holding portion 51 into which the bearing is inserted, and the diameter of the opening inclined surface 52 increases from the position where the bearing 71 is held toward the outside of the opening.

The outer diameter of the O-ring 82 in the open state is larger than the diameter of the inner peripheral surface of the holding portion 51, and the inner diameter of the O-ring 82 is smaller than the outer diameter of the bottom surface of the annular groove 81. In a state where the O-ring 82 is fitted into the annular groove 81 and held by the bearing 71 and the inner peripheral surface of the holding portion 51, the O-ring 82 is compressed in the radial direction. The O-ring 82 interposed between the outer peripheral surface of the bearing 71 and the inner peripheral surface of the holding portion 51 can suppress vibration between the bearing 71 and the holding portion 51.

Since the annular groove 81 for fitting the O-ring 82 is formed in the outer peripheral surface of the bearing 71, it can be easily formed as compared with a case where a groove is formed in the cylindrical inner peripheral surface. Further, the accuracy of the outer diameter of the bottom surface of the annular groove 81 and the width of the annular groove 81 can be improved as compared with the case where a groove is formed in the cylindrical inner peripheral surface. As a result, the deformation amount of the O-ring 82 can be controlled within a predetermined range without forming a gap with the O-ring 82. Further, the O-ring 82 is not too tight to be inserted or damaged. According to the bearing holding structure of the first embodiment, the vibration absorbing performance of the rotating shaft can be maintained, and the assembling property can be improved.

Further, since the opening inclined surface 52 is formed in the opening of the holding portion 51, when the bearing 71 into which the O-ring 82 is fitted is inserted into the holding portion 51, the O-ring 82 is easily inserted into the holding portion 51 without being twisted or damaged.

Fig. 4A to 4D are cross-sectional views showing examples of the inclined surface of the opening of the bearing holding structure according to the first embodiment. Fig. 4A to 4D show one side of a cross section of the opening portion of the holding portion 51. The opening inclined surface 52 is formed around the opening of the holding portion 51, and the diameter thereof increases from the position where the bearing 71 is held toward the outside of the opening. The opening inclined surface 52 is a rotation surface surrounding the central axis of the holding portion 51.

In the inclined opening surface 52 of fig. 4A, in a cross section passing through the center axis of the holding portion 51, the angle formed by the line of the inclined opening surface 52 and the center axis is 45 °. The opening inclined surface 52 is not limited to 45 °. For example, as shown in fig. 4B, the angle formed by the line of the opening inclined surface 52 and the central axis may be smaller than 45 °. In the inclined opening surface 52 of fig. 4B, when the bearing 71 is inserted into the holding portion 51, the outer periphery of the O-ring 82 is gently compressed from the inclined opening surface 52 of fig. 4A.

The cross section of the opening inclined surface 52 is not limited to a straight rotational surface. For example, the cross-sectional shape of the opening inclined surface 52 in fig. 4C is an arc that contacts both a line of the end surface and a line of the inner peripheral surface of the holding portion 51. The cross-sectional shape of the inclined opening surface 52 in fig. 4D is an arc that is in contact with the line of the inner peripheral surface of the holding portion 51, but is connected at an angle to the line of the end surface. The sectional shape of the opening inclined surface 52 is not limited to an arc having a constant curvature, and may be a curve having a changing curvature such as an ellipse or a hyperbola. When the cross-sectional shape of the opening inclined surface 52 is a curved line, it is preferably in contact with a line on the inner peripheral surface of the holding portion 51.

Embodiment two.

Fig. 5 is an enlarged cross-sectional view of a bearing holding structure according to a second embodiment of the present invention. In addition to the structure of the first embodiment, the bearing holding structure of the second embodiment has a spring groove 53 into which a retaining spring 83 for preventing the bearing 71 from coming off is fitted, formed in the inner peripheral surface of the holding portion 51. The bearing 71, the annular groove 81, the O-ring 82, and the opening inclined surface 52 are the same as those of the first embodiment.

Fig. 6 is a perspective cross-sectional view of a bearing holding structure according to a second embodiment. A spring groove 53 extending in the circumferential direction is formed in the inner circumferential surface of the holding portion 51, and the spring groove 53 holds a retaining spring 83 for preventing the bearing 71 from coming off. The retaining spring 83 is, for example, a polygonal ring-shaped spring formed by bending a wire rod so as to open one place. The retaining spring 83 may be a C-shaped ring, for example.

A groove inclined surface 54 is formed along the entire circumference of the corner of the spring groove 53 on the side where the bearing 71 is held. The diameter of the groove inclined surface 54 increases from the position where the bearing 71 is held toward the opening for insertion of the bearing 71. The groove inclined surface 54 functions in the same manner as the opening inclined surface 52. When the bearing 71 into which the O-ring 82 is fitted is inserted into the holding portion 51, the O-ring 82 is compressed and deformed by the inclined opening surface 52, and is inserted so as to slide along the inner peripheral surface. The outer peripheral side of the O-ring 82 is once opened at the spring groove 53, but is compressed again by the groove inclined surface 54 and deformed.

Since the groove inclined surface 54 is formed in the spring groove 53, when the bearing 71 into which the O-ring 82 is fitted is inserted further from the spring groove 53 to the inside, the O-ring 82 is easily inserted into the position where the bearing 71 is held without being twisted or damaged.

Fig. 7A to 7D are cross-sectional views showing examples of groove inclined surfaces of a bearing holding structure according to a second embodiment. Fig. 7A to 7D show one side of a partial cross section of the spring groove 53 of the holding portion 51. The groove inclined surface 54 is formed around the corner of the spring groove 53 on the side where the bearing 71 is held, and the diameter thereof increases from the position where the bearing 71 is held toward the opening for insertion of the bearing 71. The groove inclined surface 54 is a rotation surface around the central axis of the holding portion 51.

In the groove inclined surface 54 of fig. 7A, in a cross section passing through the center axis of the holding portion 51, the angle formed by the line of the groove inclined surface 54 and the center axis is 45 °. The groove inclined surface 54 is not limited to 45 °. For example, as shown in fig. 7B, the angle formed by the line of the groove inclined surface 54 and the central axis may be smaller than 45 °. When the bearing 71 is inserted into the holding portion 51 in the groove inclined surface 54 of fig. 7B, the outer periphery of the O-ring 82 is gently compressed from the groove inclined surface 54 of fig. 7A.

The cross section of the groove inclined surface 54 is not limited to a linear rotation surface. For example, the groove inclined surface 54 in fig. 7C has a cross-sectional shape of an arc contacting both a line on the side surface of the spring groove 53 and a line on the inner circumferential surface. The groove inclined surface 54 in fig. 7D has a circular arc shape in cross section, which is in contact with the line of the inner peripheral surface of the holding portion 51, but is connected to the line of the side surface of the spring groove 53 at an angle. The sectional shape of the groove inclined surface 54 is not limited to an arc having a constant curvature, and may be a curve having a changing curvature such as an ellipse or a hyperbola. When the cross-sectional shape of the groove inclined surface 54 is a curved line, it is preferably in contact with a line of the inner peripheral surface of the holding portion 51.

Fig. 8 is an enlarged cross-sectional view showing a modification of the bearing holding structure according to the second embodiment. Fig. 8 is an enlarged cross-sectional view of the spool shaft of the dual-bearing reel 99 corresponding to fig. 3 or 5. In the example of fig. 8, an opening that opens to the outside of the first side plate is formed in the holding portion 51 fitted into the first side plate 8. In the example of fig. 3 and 5, the bearing 71 is inserted into the holding portion 51 from the spool 12 side, whereas in the example of fig. 8, the bearing 71 is inserted into the holding portion 51 from the opposite side of the spool 12. The opening of the holding portion 51 is covered with the cover member 55 after the bearing 71 is inserted. The lid member 55 is screwed to the holding portion 51 by, for example, forming a male screw on the outer periphery.

In the example of fig. 8, an annular groove 81 is also formed in the outer peripheral surface of the bearing 71, and an O-ring 82 is fitted into and held by the annular groove 81. In the holding portion 51, an opening inclined surface 52 is formed around the opening for inserting the bearing 71, and the diameter of the opening inclined surface 52 increases from the position where the bearing 71 is held toward the outside of the opening. Further, a spring groove 53 extending in the circumferential direction for holding the retaining spring 83 is formed in the inner circumferential surface of the holding portion 51. Further, a groove inclined surface 54 is formed along the entire circumference at a corner of the spring groove 53 on the side where the bearing 71 is held, and the diameter of the groove inclined surface 54 increases from the position where the bearing 71 is held toward the opening for insertion of the bearing 71.

Since the annular groove 81 for fitting the O-ring 82 is formed in the outer peripheral surface of the bearing 71, as in the first and second embodiments, it can be easily formed as compared with the case where a groove is formed in the cylindrical inner peripheral surface. Further, the accuracy of the outer diameter of the bottom surface of the annular groove 81 and the width of the annular groove 81 can be improved as compared with the case where a groove is formed in the cylindrical inner peripheral surface. As a result, the deformation amount of the O-ring 82 can be controlled within a predetermined range without forming a gap with the O-ring 82. Further, since the opening inclined surface 52 is formed in the opening of the holding portion 51, when the bearing 71 into which the O-ring 82 is fitted is inserted into the holding portion 51, the O-ring 82 is easily inserted into the holding portion 51 without being twisted or damaged.

Further, since the groove inclined surface 54 is formed in the spring groove 53 as in the second embodiment, when the bearing 71 into which the O-ring 82 is fitted is inserted further from the spring groove 53 to the inside, the O-ring 82 is easily inserted into the position where the bearing 71 is held without being twisted or damaged.

In the configuration of fig. 8, for example, a spacer (spacer) sandwiched between the cover member 55 and the outer ring of the bearing 71 may be inserted, or the tip end of the cover member 55 may be extended to contact the outer ring of the bearing 71, instead of the retaining spring 83. In this case, the structure can be the same as that of the first embodiment in which the spring groove 53 is not formed.

As shown in fig. 3, 5, and 8, the bearing holding structure according to the first or second embodiment can be employed in either a structure in which the bearing 71 is inserted into the holding portion 51 from the center portion of the shaft in the direction toward the one end or a structure in which the bearing 71 is inserted into the holding portion 51 from the one end of the shaft in the direction toward the center portion.

The bearing holding structure of the first or second embodiment is not limited to the bearing 71 of the spool shaft of the dual-bearing reel 99. For example, the bearing holding structure according to the first or second embodiment can be applied to the structure shown in fig. 2 that holds the bearing 72 on the handle 2 side for supporting the spool shaft 16. In addition, a structure may be adopted in which a bearing 73 for supporting a pinion gear that transmits rotation to the spool shaft 16 via the clutch mechanism 13, or a bearing 74 for supporting a shaft of the handle 2 or a gear shaft of the gear mechanism 18 is held.

The third embodiment.

In the third embodiment, an example is shown in which the bearing holding structure according to the first or second embodiment is applied to a fishing reel other than a dual-bearing reel. Fig. 9 is a sectional view of a fishing reel according to a third embodiment of the present invention. The fishing reel according to the third embodiment is a spinning reel (spinning reel) 100. Fig. 9 shows an example of a cross section of the spinning reel 100.

The spinning reel 100 is attached to the fishing rod so as to face the tip end (front) of the fishing rod in the left direction in fig. 9. The spinning reel 100 includes a reel unit 101, a rotor 111, a spool 112, and a handle 113. The fishing line (not shown) wound around the spool 112 is paid out forward, that is, leftward in fig. 9.

The rotor 111 is rotated by turning a crank (crank), i.e., a handle 113. When the handle 113 is turned, the spool 112 reciprocates in the front-rear direction in synchronization with the rotation of the rotor 111. By these operations, the fishing line that is paid out is guided by the rotor 111 and uniformly wound around the cylindrical surface of the spool 112.

The rotor 111 is fitted to the mounting portion 132 of the pinion gear 103, fixed to the pinion gear 103, and rotates together with the pinion gear 103. The pinion gear 103 is supported by the reel unit 101 so as to be rotatable about the rotation center of the drive shaft. The pinion gear 103 is hollow and cylindrical, and the spool shaft 102 is disposed through the pinion gear 103. The spool shaft 102 and the pinion gear 103 relatively rotate and reciprocate. A spool 112 is attached to the front end side of the spool shaft 102 via a drag mechanism 116. The rear end side of the spool shaft 102 is connected to a swinging (oscillating) mechanism 115.

The handle 113 is a crank, and a driving gear 114 is attached to the crank shaft. The drive gear 114 is meshed with a gear portion 131 of the pinion gear 103 via a face gear (face gear), for example. The swing mechanism 115 rotates in synchronization with the pinion gear 103. When the swing mechanism 115 rotates, the spool shaft 102 is reciprocated in the front-rear direction.

In order to rotate the pinion gear 103 only in one direction, a one-way clutch 105 is disposed between the pinion gear 103 and the housing member 104. The accommodating member 104 is fixed to the reel unit 101. The inner race of the one-way clutch 105 is fitted with the pinion gear 103 and rotates together with the pinion gear 103. The outer race of the one-way clutch 105 is fitted and fixed to the housing member 104.

The one-way clutch 105 is held in the internal space of the housing member 104 by a cover member 106. The cover plate 108 is closely attached to a surface facing the rotor 111 in the axial direction of the cover member 106. A ring-shaped rotor ring (rotor coil) 107 formed to surround the outer circumference of the pinion gear 103 in the rotational direction is fitted to the pinion gear 103. A seal member 109 for sealing a gap between the cover member 106 and the rotor ring 107 is mounted on the front surface of the cover member 106.

The pinion gear 103 is rotatably supported by the reel unit 101 such that a rear end portion thereof near the swing mechanism 115 is supported by a bearing 75 and an intermediate portion thereof is supported by a bearing 76. The center portion of the rotor 111 is supported by the spool shaft 102 through a bearing 77 so as to be rotatable with respect to the spool shaft 102. The outer race of the bearing 77 rotates together with the rotor 111. The inner race of the bearing 77 slides in the front-rear direction with respect to the spool shaft 102, but does not rotate with respect to the spool shaft 102.

The

bearings

78 and 79 are disposed between a member of the drag mechanism 116 that does not rotate with respect to the spool shaft 102 and a member that rotates with the spool 112 with respect to the spool shaft 102, and the spool 112 is rotatably supported by the spool shaft 102. The outer rings of the

bearings

78 and 79 rotate together with the spool 112 with respect to the spool shaft 102, and the inner rings of the

bearings

78 and 79 are fixed to the spool shaft 102.

The bearing holding structure of the first or second embodiment can be applied to the holding structure of the

bearings

75, 76, 77, 78, and 79. The bearing holding structure of the first embodiment can be adopted without using the retaining spring 83. That is, a ring groove 81 is formed on the outer periphery of the

bearings

75, 76, 77, 78, 79, and an O-ring 82 is fitted into the ring groove 81 to be held. The opening inclined surface 52 is formed around the opening for inserting the

bearings

75, 76, 77, 78, and 79 in the holding portion for holding the

bearings

75, 76, 77, 78, and 79.

In the

bearings

77, 78, and 79, although the outer ring rotates, vibration generated by relative rotation of the inner ring and the outer ring can be suppressed. Further, in the bearing 76, the inner peripheral surface of the holding portion does not face the entire outer peripheral surface of the bearing 76, but the outer peripheral surface of the bearing 76 is held in the radial direction by the inner peripheral surface of the holding portion, and therefore, the effect of the O-ring 82 is obtained. In the case of the holding portion of the bearing 76, the groove accuracy when the annular groove 81 is formed in the outer peripheral surface of the bearing 76 can be said to be higher than that when the groove of the O-ring 82 is formed in the inner peripheral surface of the holding portion.

When the retaining spring 83 is used, the bearing holding structure of the second embodiment can be adopted. That is, in addition to the annular groove 81 and the O-ring 82, the spring groove 53 for holding the retaining spring 83 is formed in the holding portion, and the inclined surface 54 is formed at the corner of the spring groove 53 on the side where the

bearings

75, 76, 77, 78, and 79 are held.

Although not shown in fig. 9, the bearing holding structure according to the first or second embodiment may be used to hold a bearing that rotatably supports the handle shaft 130 of the handle 113 to the reel unit 101. In addition, the bearing holding structure according to the first or second embodiment can be applied to the rotation shaft of all fishing reels, without being limited to the dual-bearing reel and the spinning reel.

Claims

1. A bearing holding structure of a fishing reel for fishing is characterized in that,

comprising a bearing, a cylindrical holding part and an O-ring, wherein,

a rotation shaft of the fishing reel penetrates through the inner ring of the bearing, and the bearing rotatably supports the rotation shaft;

the cylindrical holding portion holds the bearing by being housed inside, and has an inner peripheral surface facing an outer peripheral surface of the bearing;

the O-ring is interposed between an outer peripheral surface of the bearing and an inner peripheral surface of the holding portion,

an annular groove for the O-ring to be fitted into is formed on the outer peripheral surface of the bearing,

the O-ring is fitted into the annular groove to be held,

the annular groove is provided on a side close to one end of the bearing,

the one end of the bearing refers to an end portion of the bearing on a side close to an opening of the holding portion, which is an opening into which the bearing is inserted.

2. A bearing holding structure of a fishing reel according to claim 1,

an opening inclined surface is formed around an opening of the holding portion into which the bearing is inserted, and a diameter of the opening inclined surface increases from a position at which the bearing is held toward an outside of the opening.

3. A bearing holding structure of a fishing reel according to claim 1 or 2,

a spring groove extending in the circumferential direction is formed in an inner peripheral surface of the holding portion, the spring groove holding a retaining spring for preventing the bearing from falling off,

a groove inclined surface is formed along the entire circumference of a corner of the spring groove on the side where the bearing is held, and the diameter of the groove inclined surface increases from the position where the bearing is held toward the opening of the holding portion into which the bearing is inserted.

4. A fishing reel for fishing, characterized in that,

a bearing holding structure for a fishing reel comprising a reel unit, a spool, and the fishing reel according to any one of claims 1 to 3,

the fishing reel body is mounted on a fishing rod;

the spool is rotatably supported by the reel unit, and a fishing line is wound around the outer periphery of the spool;

the bearing holding structure of the fishing reel rotatably supports a rotation shaft for winding the fishing line on the spool.