JP7309571B2 - SLIDE BEARING FOR FISHING REEL AND HANDLE KNOB SUPPORT STRUCTURE INCLUDING THE SAME - Google Patents

Description

TECHNICAL FIELD The present invention relates to a slide bearing for a fishing reel and a handle knob support structure including the same.

A fishing reel includes a bearing that rotatably supports one of a shaft member and an outer member arranged on the outer peripheral side of the shaft member with respect to the other. For example, in Patent Document 1, a rolling bearing is arranged between a knob shaft and a handle knob arranged on the outer peripheral side of the knob shaft, and the rolling bearing supports the handle knob rotatably with respect to the knob shaft. It is

JP 2013-009603 A

In fishing reels, sliding bearings made of resin are sometimes used instead of rolling bearings in order to reduce the cost and weight of the bearings. Since the dimensional accuracy of the inner and outer diameters of sliding bearings tends to be lower than that of rolling bearings, looseness is likely to occur. In addition, even if the dimensional accuracy of the inner and outer diameters of the sliding bearing is increased, rattling cannot be suppressed due to manufacturing and assembly errors in the shaft and outer members, and eccentricity causes the rotation to become heavy. There is a risk of

SUMMARY OF THE INVENTION An object of the present invention is to provide a fishing reel sliding bearing that can suppress backlash between a shaft member and an outer member and suppress rotation of either the shaft member or the outer member from becoming heavy. to do. Another object of the present invention is to provide a handle knob support structure capable of suppressing rattling between the knob shaft and the handle knob and suppressing the rotation of the handle knob from becoming heavy.

A sliding bearing for a fishing reel according to one aspect of the present invention is arranged between a shaft member and an outer member arranged on the outer peripheral side of the shaft member, and one of the shaft member and the outer member is arranged relative to the other. Rotatable support. A sliding bearing includes a first bush and a second bush. The first bushing is attached to the outer peripheral surface of the shaft member. The first bushing is arranged such that its outer peripheral surface is radially separated from the inner peripheral surface of the outer member. The first bushing has, on its outer peripheral surface, a first tapered surface whose outer diameter increases from the radially inner side to the radially outer side of the shaft member. The second bushing is attached to the inner peripheral surface of the outer member. The second bushing has an inner peripheral surface that is radially spaced apart from the shaft member. The second bushing has an inner peripheral surface with a second tapered surface that is in contact with the first tapered surface and whose inner diameter increases from the radially inner side to the radially outer side of the shaft member.

In this sliding bearing, the gap between the inner peripheral surface of the first bush and the outer peripheral surface of the shaft member can be reduced by finishing the inner diameter of the first bush with high accuracy. Further, by finishing the outer diameter of the second bushing with high accuracy, it is possible to reduce the gap between the outer peripheral surface of the second bushing and the inner peripheral surface of the outer member. Furthermore, by bringing the first tapered surface of the first bushing and the second tapered surface of the second bushing into contact with each other, the gap in the radial direction between the first tapered surface and the second tapered surface can be reduced. As a result, the gap between the shaft member and the outer member can be kept small to the same extent as when the slide bearing is configured with a single bushing to increase the dimensional accuracy of the inner and outer diameters. Further, by adjusting the contact pressure between the first tapered surface and the second tapered surface, it is possible to adjust the radial gap between the first bushing and the second bushing. As a result, it is possible to prevent the rotation of either the shaft member or the outer member from becoming heavy due to the eccentricity. Moreover, the load in the axial direction can be supported by the first bushing and the second bushing.

The first bush and the second bush may be made of resin. In this case, it is possible to reduce the cost and weight of the slide bearing.

A fishing reel handle knob support structure according to one aspect of the present invention includes a knob shaft corresponding to a shaft member, a handle knob corresponding to an outer member, and the slide bearing described above. The sliding bearing is arranged on at least one of the distal end side and the proximal end side of the knob shaft, and supports the handle knob rotatably with respect to the knob shaft.

In this handle knob support structure, the gap between the knob shaft and the handle knob can be kept smaller than when the slide bearing is configured with a single bush. Further, by adjusting the contact pressure between the first tapered surface and the second tapered surface, it is possible to adjust the gap in the radial direction between the first bushing and the second bushing. It is possible to suppress the rotation of the knob from becoming heavy. Moreover, the load in the axial direction can be supported by the first bushing and the second bushing.

The handle knob support structure may further include a screw member that is screwed into a screw hole provided at the tip of the knob shaft. The knob shaft includes a first shaft portion having an outer diameter smaller than the inner diameter of the first bushing, and a second shaft provided closer to the proximal end of the knob shaft than the first shaft portion and having an outer diameter larger than the inner diameter of the first bushing. You may have a part and a. The handle knob may have a first accommodating portion provided on the distal end side of the knob shaft and a second accommodating portion provided on the proximal end side of the knob shaft. A slide bearing may be arranged in each of the first housing portion and the second housing portion. The sliding bearing housed in the first housing part may be retained from the first housing part and the knob shaft by the head of the screw member. The slide bearing housed in the second housing portion may be retained from the second housing portion and the knob shaft by the second shaft portion.

In this case, it is possible to retain the sliding bearings respectively arranged in the first accommodating portion and the second accommodating portion with a simple configuration.

According to the present invention, there is provided a sliding bearing for a fishing reel that can suppress backlash between the shaft member and the outer member, and suppress rotation of either the shaft member or the outer member from becoming heavy. can do. Further, it is possible to provide a handle knob support structure that can suppress rattling between the knob shaft and the handle knob and suppress the rotation of the handle knob from becoming heavy.

1 is a cross-sectional view of a spinning reel employing an embodiment of the present invention; FIG. Sectional drawing of a handle knob. FIG. 4 is an enlarged cross-sectional view of the periphery of the first accommodating portion; FIG. 4 is an enlarged cross-sectional view of the periphery of the second accommodating portion; The enlarged sectional view of the periphery of the 1st accommodating part which concerns on other embodiment. Sectional drawing of the dual-bearing reel which concerns on other embodiment.

A spinning reel 100 that employs an embodiment of the present invention can let out a fishing line forward. The spinning reel 100 mainly includes a reel body 2, a handle assembly 3, a spool shaft 4, a spool 5, a pinion gear 6, and a rotor 7, as shown in FIG.

In the following description, when fishing, the direction in which the fishing line is let out is referred to as the front, and the opposite direction is referred to as the rear. Left and right refer to left and right when the spinning reel 100 is viewed from behind.

The reel body 2 has a reel body portion 2a and a cylindrical portion 2b. The reel main body 2a has an internal space in which a known oscillating mechanism 8 and a part of a known rotor drive mechanism 9 for driving the rotor 7 are housed. The cylindrical portion 2b extends axially from the front portion of the reel body portion 2a.

The handle assembly 3 is rotatably supported by the reel body 2 . In this embodiment, the handle assembly 3 is attached to the right side of the reel body 2 . Note that the handle assembly 3 can also be mounted on the left side of the reel body 2 .

The handle assembly 3 has a handle shaft 11, a handle arm 12, a knob shaft 13, and a handle knob 14, as shown in FIGS. The handle shaft 11 is rotatably supported by the reel body 2 . The handle shaft 11 extends in the left-right direction. The handle arm 12 extends in a direction intersecting with the handle shaft 11 . The handle arm 12 is connected to the handle shaft 11 so as to rotate integrally therewith. The knob shaft 13 is an example of a shaft member. Handle knob 14 is an example of an outer member. Details of the knob shaft 13 and the handle knob 14 will be described later.

The spool shaft 4 extends in the front-rear direction and is supported by the reel body 2 . The spool shaft 4 reciprocates the reel body 2 in the front-rear direction by means of an oscillating mechanism 8 in accordance with the rotation of the handle assembly 3 .

A spool 5 is attached to the front end of the spool shaft 4 . A fishing line is wound around the outer circumference of the spool 5 . The spool 5 moves together with the spool shaft 4 . The spool 5 reciprocates in the longitudinal direction with respect to the reel body 2 together with the spool shaft 4 as the handle assembly 3 rotates.

The pinion gear 6 is a hollow cylindrical member through which the spool shaft 4 extends. The pinion gear 6 is rotatably supported by the reel body 2 via bearings 18 a and 18 b arranged on the reel body 2 . Rotation of the handle assembly 3 is transmitted to the pinion gear 6 via a rotor drive mechanism 9 .

The rotor 7 is rotatable with respect to the reel body 2 and winds fishing line around the spool 5 as the handle assembly 3 rotates. The rotor 7 is fixed to the pinion gear 6 so as to be rotatable together.

The spinning reel 100 further comprises a handle knob support structure 20 as shown in FIGS. 2-4. The handle knob support structure 20 has a knob shaft 13 , a handle knob 14 and a sliding bearing 15 .

In the following description, the direction in which the knob shaft 13 extends is called the axial direction, the direction perpendicular to the knob shaft 13 is called the radial direction, and the direction around the axis A of the knob shaft 13 is called the circumferential direction. In the radial direction, the direction toward the axis A of the knob shaft 13 is called the radial inside, and the direction away from the axis A is called the radial outside. In addition, the left side in FIGS. 2 and 3 will be described as the distal side, and the right side as the proximal side. It should be noted that the axial direction in the present embodiment coincides with the left-right direction.

The knob shaft 13 extends in the left-right direction. The knob shaft 13 extends parallel to the handle shaft 11 . The knob shaft 13 is connected to the handle arm 12 at its proximal end (right side in FIG. 2) so as to be integrally rotatable.

The knob shaft 13 has a first shaft portion 13a, a second shaft portion 13b, a collar portion 13c, and a connecting portion 13d in order from the tip side (left side in FIG. 2) of the knob shaft 13. As shown in FIG. A screw hole 13e is formed at the tip of the first shaft portion 13a. The screw hole 13e extends axially. The second shaft portion 13b is provided closer to the base end of the knob shaft 13 (on the right side in FIG. 2) than the first shaft portion 13a. The second shaft portion 13b is arranged adjacent to the first shaft portion 13a in the axial direction. The outer diameter of the second shaft portion 13b is larger than the outer diameter of the first shaft portion 13a.

The collar portion 13c is arranged adjacent to the second shaft portion 13b in the axial direction. The outer diameter of the collar portion 13c is larger than the outer diameter of the second shaft portion 13b. The connecting portion 13d is a portion that is non-rotatably connected to the handle arm 12. As shown in FIG. The connecting portion 13d is screwed and fixed to the handle arm 12, for example.

The handle knob 14 is arranged on the outer peripheral side of the knob shaft 13 . The handle knob 14 is arranged to cover the radially outer side of the knob shaft 13 . An inner peripheral surface 14a of the handle knob 14 is formed in a cylindrical shape. Specifically, the handle knob 14 has a tubular portion 16 and a cover portion 17 . The cover portion 17 is arranged so as to cover the radially outer side of the tubular portion 16 .

The tubular portion 16 extends in the axial direction. A knob shaft 13 is inserted into the inner peripheral portion of the cylindrical portion 16 . The knob shaft 13 is inserted from the base end side of the tubular portion 16 . The cylindrical portion 16 accommodates the first shaft portion 13a, the second shaft portion 13b, and part of the flange portion 13c. A cap member 19 is attached to the tip side of the cylindrical portion 16 .

The cylindrical portion 16 has a first accommodation portion 16a and a second accommodation portion 16b. The first accommodation portion 16 a is provided on the tip side of the cylindrical portion 16 . The first accommodation portion 16 a is provided on the distal end side of the knob shaft 13 . One end of the first shaft portion 13a is arranged in the first accommodating portion 16a. The second housing portion 16b is spaced apart from the first housing portion 16a in the axial direction. The second housing portion 16b is provided on the base end side of the cylindrical portion 16. As shown in FIG. The second accommodation portion 16 b is provided on the proximal end side of the knob shaft 13 . The other end of the first shaft portion 13a is arranged in the second accommodating portion 16b.

The sliding bearing 15 is arranged on at least one of the distal end side and the proximal end side of the knob shaft 13 and supports the handle knob 14 rotatably with respect to the knob shaft 13 . In this embodiment, the slide bearing 15 is arranged in each of the first accommodation portion 16a and the second accommodation portion 16b. In the following description, the slide bearing 15 housed in the first housing portion 16a is called a slide bearing 15A, and the slide bearing 15 housed in the second housing portion 16b is called a slide bearing 15B.

The sliding bearing 15A has a first bushing 21 and a second bushing 22 . The first bushing 21 and the second bushing 22 are tubular. The first bushing 21 and the second bushing 22 in this embodiment are made of resin. The first bushing 21 and the second bushing 22 are housed in the first housing portion 16a. The first bushing 21 and the second bushing 22 are not necessarily made of resin, and may be made of metal, for example.

The first bushing 21 is attached to the outer peripheral surface 13 f of the knob shaft 13 . In this embodiment, the outer peripheral surface 13f of the knob shaft 13 corresponds to the outer peripheral surface of the first shaft portion 13a. Specifically, the inner peripheral surface 21a of the first bushing 21 is slidably fitted to the outer peripheral surface of the first shaft portion 13a. The inner diameter of the first bushing 21 is finished with high accuracy, and the gap between the inner peripheral surface 21a of the first bushing 21 and the outer peripheral surface 13f of the knob shaft 13 is small. The base end surface of the first bushing 21 is restricted from moving in the axial direction by the bottom portion of the first accommodating portion 16a.

The outer peripheral surface 21b of the first bushing 21 is arranged radially apart from the inner peripheral surface 14a of the handle knob 14 (here, the inner peripheral surface of the first accommodating portion 16a). The outer diameter of the first bushing 21 is smaller than the inner diameter of the first accommodating portion 16a. Specifically, the outer peripheral surface 21b of the first bushing 21 has a first cylindrical surface 21c and a first tapered surface 21d. The first cylindrical surface 21c is arranged radially apart from the inner peripheral surface of the first accommodating portion 16a. The first cylindrical surface 21c is formed over the entire circumferential direction. The outer diameter of the first cylindrical surface 21c is larger than the outer diameter of the first tapered surface 21d.

The first tapered surface 21d is arranged adjacent to the first cylindrical surface 21c. The first tapered surface 21d extends toward the tip of the knob shaft 13 from the tip of the first cylindrical surface 21c. The first tapered surface 21 d is inclined from the first cylindrical surface 21 c toward the distal end side of the knob shaft 13 in a direction toward the axis A of the knob shaft 13 . The first tapered surface 21d is formed over the entire circumferential direction. The first tapered surface 21d is formed such that the outer diameter increases from the radially inner side to the radially outer side.

The second bushing 22 is attached to the inner peripheral surface 14 a of the handle knob 14 . Specifically, the outer peripheral surface 22a of the second bushing 22 fits into the inner peripheral surface of the first housing portion 16a. The outer diameter dimension of the second bushing 22 is finished with high accuracy, and the gap between the outer peripheral surface 22a of the second bushing 22 and the inner peripheral surface of the first accommodating portion 16a is small. The second bushing 22 may be slidably fitted to the inner peripheral surface of the first accommodating portion 16a, or may be lightly press-fitted into the first accommodating portion 16a.

The inner peripheral surface 22b of the second bushing 22 is arranged apart from the outer peripheral surface 13f of the knob shaft 13 in the radial direction. The inner diameter of the second bushing 22 is larger than the outer diameter of the first shaft portion 13a. Specifically, the inner peripheral surface 22b of the second bushing 22 has a second cylindrical surface 22c and a second tapered surface 22d. The second cylindrical surface 22c is formed over the entire circumferential direction. The inner diameter of the second cylindrical surface 22c is smaller than the inner diameter of the second tapered surface 22d.

The second tapered surface 22d is arranged adjacent to the second cylindrical surface 22c. The second tapered surface 22d extends toward the proximal end of the knob shaft 13 from the proximal end of the second cylindrical surface 22c. The second tapered surface 22d is inclined in a direction away from the axis A of the knob shaft 13 from the second cylindrical surface 22c toward the base end side of the knob shaft 13 . The second tapered surface 22d is formed over the entire circumferential direction. The second tapered surface 22d is formed such that the inner diameter increases from the radially inner side to the radially outer side. The second tapered surface 22d faces the first tapered surface 21d and is arranged in contact with the first tapered surface 21d. The contact here includes a state in which at least part of the second tapered surface 22d is in contact with the first tapered surface 21d. The inclination angle of the first tapered surface 21d and the second tapered surface 22d with respect to the axis A is preferably approximately 45°. Thereby, the gap between the first tapered surface 21d and the second tapered surface 22d is resolved to the same degree in the axial direction and the radial direction.

The handle knob support structure 20 further includes a screw member 25 . The screw member 25 is screwed into the screw hole 13 e of the knob shaft 13 . The head portion 25 a can contact the tip end surface of the second bushing 22 , and the head portion 25 a of the screw member 25 prevents the slide bearing 15 A from coming off from the first accommodating portion 16 a and the knob shaft 13 . A washer 26 is arranged between the base end surface of the first bushing 21 and the bottom of the first accommodating portion 16a. The washer 26 is provided to adjust the axial clearance of the sliding bearing 15A, and the washer 24 suppresses the axial rattling of the sliding bearing 15A. The washer 24 may be a spring washer, or may be arranged between the distal end surface of the second bushing 22 and the head portion 25a of the screw member 25. As shown in FIG.

The sliding bearing 15B has the same shape as the sliding bearing 15A, and differs from the sliding bearing 15A only in the position where it is arranged. Therefore, the details of the sliding bearing 15B will be simplified and explained. The slide bearing 15B has a first bushing 31 and a second bushing 32 . The first bushing 21 and the second bushing 22 are housed in the second housing portion 16b. The first bushing 31 has the same shape as the first bushing 21 of the sliding bearing 15A. The second bushing 32 has the same shape as the second bushing 22 of the slide bearing 15B.

The inner peripheral surface 31a of the first bushing 31 is slidably fitted to the outer peripheral surface of the first shaft portion 13a. The base end surface of the first bushing 31 can contact the tip end surface of the second shaft portion 13b, and the second shaft portion 13b prevents the sliding bearing 15B from coming off from the second accommodating portion 16b and the knob shaft 13. The outer peripheral surface 31b of the first bushing 31 is arranged radially apart from the inner peripheral surface of the second accommodating portion 16b. The outer diameter of the first bushing 31 is smaller than the inner diameter of the second accommodating portion 16b. The outer peripheral surface 31b of the first bushing 31 has a first cylindrical surface 31c and a first tapered surface 31d.

The outer peripheral surface 32a of the second bushing 32 fits into the inner peripheral surface of the second accommodating portion 16b. The inner peripheral surface 32b of the second bushing 32 has a second cylindrical surface 32c and a second tapered surface 32d. The tip surface of the second bushing 32 is restricted from moving in the axial direction by the bottom portion of the second accommodating portion 16b. A washer 36 is arranged between the tip surface of the second bushing 32 and the bottom of the second accommodating portion 16b. The washer 36 suppresses axial rattling of the slide bearing 15B.

In the slide bearing 15A configured as described above and the handle knob support structure 20 having the slide bearing 15A, by finishing the inner diameter of the first bushing 21 with high accuracy, the gap between the inner peripheral surface 21a of the first bushing 21 and the knob shaft 13 is reduced. The gap can be made smaller. Further, by finishing the outer diameter of the second bushing 22 with high accuracy, the gap between the outer peripheral surface 22a of the second bushing 22 and the inner peripheral surface of the first accommodating portion 16a can be reduced. Furthermore, by bringing the first tapered surface 21d of the first bushing 21 and the second tapered surface 22d of the second bushing 22 into contact with each other, the gap in the radial direction between the first tapered surface 21d and the second tapered surface 22d is reduced. can be made smaller. As a result, the gap between the knob shaft 13 and the handle knob 14 can be reduced to the same extent as when the slide bearing is configured with a single bush to increase the dimensional accuracy of the inner and outer diameters.

More specifically, when the slide bearing is composed of a single bush, it is difficult to keep the gap between the knob shaft 13 and the handle knob 14 to 0.08 mm or less due to manufacturing and assembly errors. However, in the slide bearing 15A configured as described above, the first tapered surface 21d and the second tapered surface 22d are brought into contact with each other, so that the gap between the first tapered surface 21d and the second tapered surface 22d is reduced in the axial direction and the radial direction. is decomposed into Thereby, the contact pressure between the first tapered surface 21d and the second tapered surface 22d is adjusted by, for example, the screw member 25 or the washer 26, and the gap in the radial direction between the first bushing 21 and the second bushing 22 is adjusted. By reducing the size, the gap between the knob shaft 13 and the handle knob 14 can be suppressed to 0.05 mm or less. Further, by adjusting the contact pressure between the first tapered surface 21d and the second tapered surface 22d, it is possible to prevent the handle knob 14 from rotating slowly due to eccentricity. Moreover, the load in the axial direction can be supported by the first bushing 21 and the second bushing 22 . A similar effect can be obtained in the slide bearing 15B as well.

<Other embodiments>
Although one embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and various modifications are possible without departing from the gist of the invention. In particular, multiple embodiments and modifications described herein can be arbitrarily combined as needed.

(a) In the above embodiment, the sliding bearings 15 were arranged on the distal end side and the proximal end side of the knob shaft 13, respectively. may be arranged and the rolling bearing may be arranged in the other.

(b) In the above embodiment, the second bushing 22 was arranged on the distal end side of the first bushing 21, but as shown in FIG. may In other words, the sliding bearing 15 may be reversed from the state shown in FIG.

(c) In the above embodiment, the spinning reel 100 that employs one embodiment of the present invention was exemplified to explain the present invention, but the present invention may be applied to other fishing reels such as dual-bearing reels. . Further, in the above embodiment, the knob shaft 13 is used as an example of the shaft member, and the handle knob 14 is used as an example of the outer member, but the shaft member and the outer member are not limited to the above embodiment. The shaft member may be other shaft members such as a spool shaft, a handle shaft, a pinion gear, a worm shaft, and the like. For example, as shown in FIG. 6, one end of the worm shaft 121 of the level wind mechanism 120 in the double-bearing reel is slidably supported with respect to the reel body 102 arranged on the outer peripheral side of the one end of the worm shaft 121 . A bearing 15 may be arranged.

13 Knob shaft (an example of a shaft member)
13e screw hole 14 handle knob (an example of an outer member)
15 sliding bearing 16a first accommodating portion 16b second accommodating portion 20 handle knob support structure 21, 31 first bushing 21b outer peripheral surfaces 21d, 31d first tapered surfaces 22, 32 second bushing 22b inner peripheral surfaces 22d, 32d second taper Surface 25 Screw member 25a Head

Claims (4)

A sliding bearing for a fishing reel which is arranged between a shaft member and an outer member arranged on the outer peripheral side of the shaft member, and supports one of the shaft member and the outer member so as to be rotatable with respect to the other. There is
A first shaft member mounted on the outer peripheral surface of the shaft member, the outer peripheral surface of which is arranged radially apart from the inner peripheral surface of the outer member, and the outer diameter of which increases from the radially inner side to the radially outer side of the shaft member. a first bushing having a tapered surface on the outer peripheral surface;
It is mounted on the inner peripheral surface of the outer member, the inner peripheral surface is arranged radially away from the shaft member, the inner diameter increases from the radially inner side to the radially outer side of the shaft member, and the first taper is formed. a second bushing having a second tapered surface on the inner peripheral surface that contacts the surface;
comprising
Sliding bearings for fishing reels. The first bush and the second bush are made of resin,
A sliding bearing for a fishing reel according to claim 1. A handle knob support structure for a fishing reel,
a knob shaft corresponding to the shaft member;
a handle knob corresponding to the outer member;
a sliding bearing according to claim 1 or 2, arranged on at least one of a distal end side and a proximal end side of the knob shaft, and supporting the handle knob rotatably with respect to the knob shaft;
comprising
Handle knob support structure. further comprising a threaded member that is screwed into a threaded hole provided at the tip of the knob shaft,
The knob shaft includes a first shaft portion having an outer diameter smaller than the inner diameter of the first bushing, and a first shaft portion provided closer to the proximal end of the knob shaft than the first shaft portion and having an outer diameter larger than the inner diameter of the first bushing. and a second shaft portion having a larger
The handle knob has a first accommodating portion provided on the distal end side of the knob shaft and a second accommodating portion provided on the proximal end side of the knob shaft,
The slide bearings are arranged in the first accommodation portion and the second accommodation portion, respectively,
The sliding bearing housed in the first housing part is retained from the first housing part and the knob shaft by the head of the screw member,
The sliding bearing housed in the second housing part is retained by the second shaft part from the second housing part and the knob shaft,
The handle knob support structure according to claim 3.

Images