Spinning fishing reels

Abstract

To reduce cost while a connection structure between a drive gear shaft and a handle shaft can be simplified.SOLUTION: A fishing spinning reel 100 is constituted in such a manner that a handle 3 can be attached to and detached from a reel body 1. The fishing spinning reel comprises: a drive gear shaft 2 provided in the reel body 1; ball bearings 15 and 16 externally fitted to the drive gear shaft 2, and rotatably supporting the drive gear shaft 2; and a handle shaft 31 provided in the handle 3, and screwed to the drive gear shaft 2. The handle shaft 31 is integrally provided with a contact part 36 brought into contact with an inner ring of the ball bearings 15 and 16 by being screwed to the drive gear shaft 2.SELECTED DRAWING: Figure 3

Description

Technical Field

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

Background Art

[0002] Conventionally, a spinning reel for fishing in which a handle is detachably attached to a reel body has been known (see, for example, Patent Document 1). In Patent Document 1, the handle is attached by screwing a handle shaft onto a drive gear shaft of the reel body, and includes a cylindrical member provided between the drive gear shaft and the handle shaft, and a ball bearing that rotatably supports the drive gear shaft. The drive gear shaft includes a drive gear and is rotatably supported via a ball bearing.

[0003] In the cylindrical member of the patent document, a portion facing the end of the drive gear shaft faces the end with a gap therebetween. On the other hand, the cylindrical member is configured to abut against and buckle to the ball bearing that supports the drive gear shaft. Thereby, Patent Document 1 prevents an excessive thrust of the handle shaft due to screwing when the handle shaft is screwed onto the drive gear shaft from being applied to the drive gear shaft.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Since Patent Document 1 has a structure for preventing a load acting on the drive gear shaft by a cylindrical member provided between the drive gear shaft and the handle shaft, the connection structure between the drive gear shaft and the handle shaft becomes complicated, and it is necessary to manufacture each component with high dimensional accuracy, leading to an increase in cost.

[0006] The present invention was created to solve these problems, and aims to provide a fishing spinning reel that can simplify the connection structure between the drive gear shaft and the handle shaft and reduce costs. [Means for solving the problem]

[0007] To solve the above problems, the present invention provides a fishing spinning reel with a detachable handle attached to a reel body. The reel body includes a drive gear shaft, a ball bearing fitted onto the drive gear shaft to rotatably support the drive gear shaft, and a handle shaft attached to the handle and threaded onto the drive gear shaft. The handle shaft is integrally formed with an abutment that abuts against the inner ring of the ball bearing when threaded onto the drive gear shaft. The abutment portion abuts against the inner ring of the ball bearing and the end face of the drive gear shaft simultaneously when the handle shaft is screwed onto the drive gear shaft, or abuts against the end face of the drive gear shaft and then against the inner ring of the ball bearing when the handle shaft is screwed onto the drive gear shaft.

[0008] In this fishing spinning reel, when the handle shaft is threadedly engaged with the drive gear shaft, the abutment portion of the handle shaft approaches and abuts against the inner ring of the ball bearing, securing the handle shaft to the drive gear shaft. In other words, the handle shaft can be secured to the drive gear shaft in a state where the crimping force caused by the threaded engagement of the handle shaft is suppressed by the degree of abutment of the abutment portion against the inner ring of the ball bearing. This prevents the end of the drive gear from buckling when the handle shaft is threadedly engaged.

[0009] Furthermore, because the abutment portion is integrally formed with the handle shaft, there is no need to interpose a cylindrical member between the drive gear shaft and the handle shaft as in the past, which simplifies the connection structure between the drive gear shaft and the handle shaft and reduces costs. Furthermore, since the contact portion is provided integrally with the handle shaft, the handle shaft can be manufactured with high dimensional accuracy and has higher strength than when a conventional tubular member is used. Furthermore, even if the ball bearings are deformed due to excessive tightening of the handle shaft, it is only necessary to replace the ball bearings, which are less expensive than the drive gear shaft, making maintenance easier and reducing repair costs. Furthermore, in a configuration in which the abutting portion abuts the inner ring of the ball bearing and the end of the drive gear shaft simultaneously, the handle shaft can be fixed to the drive gear shaft in a state in which the pressure force caused by the threaded engagement of the handle shaft is suppressed by the degree of contact of the abutting portion with the inner ring of the ball bearing and the end of the drive gear shaft. In other words, the area that supports the axial force caused by the threaded engagement of the handle shaft can be increased, thereby improving strength. In addition, in a configuration in which the abutment portion abuts against the end of the drive gear shaft and then the abutment portion abuts against the inner ring of the ball bearing, the abutment portion buckles the end of the drive gear shaft before the abutment portion abuts against the inner ring of the ball bearing. Therefore, in this case too, the area that can support the axial force due to the threaded engagement of the handle shaft can be ultimately increased, thereby improving strength.

[0010] Preferably, the handle shaft has a base portion having a large diameter and an insertion portion having a smaller diameter than the base portion and inserted into the drive gear shaft. In this case, the abutment portion is preferably provided at the boundary between the base portion and the insertion portion.

[0011] In this configuration, the contact portion can be easily formed by utilizing the step between the large-diameter base portion and the small-diameter insertion portion, and the connecting structure between the drive gear shaft and the handle shaft can be simplified.

[0012] The handle shaft is preferably made of a high-strength material that is stronger than the ball bearing.

[0013] With this configuration, if the handle shaft is overtightened, the ball bearing, which is less expensive than the drive gear shaft, can be deformed, making maintenance easier and reducing repair costs.

[0014] Preferably, the outer diameter of the end of the drive gear shaft is smaller than the inner diameter of the ball bearing.

[0015] This configuration creates a space between the end of the drive gear shaft and the inner ring of the ball bearing to allow any buckling deformation to escape. Even if the end of the drive gear shaft buckles due to excessive tightening of the handle shaft, the effects of this can be contained within the buckling deformation space. This makes it easy to perform maintenance such as replacing the ball bearing.

[0016] Further, the contact portion preferably includes a portion facing the ball bearing and a portion facing the end of the drive gear shaft, and a flat surface is formed across both of these portions.

[0017] In this configuration, the workability of the handle shaft is improved, so that cost reduction can be achieved.

Advantages of the Invention

[0020] According to the present invention, a fishing spinning reel can be obtained that can simplify the connection structure between the drive gear shaft and the handle shaft and achieve cost reduction.

Brief Description of the Drawings

[0021] [Figure 1] It is a side view showing the overall configuration of a fishing spinning reel according to the first embodiment of the present invention. [Figure 2] It is an end view of the cross section taken along line II-II of FIG. 1 as viewed from the arrow direction. [Figure 3] It is a partially enlarged cross-sectional view showing the connection structure between the drive gear shaft and the handle shaft when the left handle is used. [Figure 4] It is a partially enlarged cross-sectional view showing the structure on the right side of the drive gear shaft. [Figure 5] It is an enlarged cross-sectional view showing the connection structure between the drive gear shaft and the handle shaft when the right handle is used. [Figure 6] It is a partially enlarged cross-sectional view showing the connection structure between the drive gear shaft and the handle shaft when the left handle is used in a fishing spinning reel according to the second embodiment of the present invention.

Modes for Carrying Out the Invention

[0022] The fishing spinning reel 100 according to each embodiment will be described with reference to the drawings. In the following description, when referring to "front and rear" and "up and down", the directions shown in FIG. 1 are used as a reference, and when referring to "left and right", the directions shown in FIG. 2 are used as a reference.

[0023] (First embodiment) First, the basic structure of a fishing spinning reel 100 will be described. As shown in FIG. 1, a fishing spinning reel 100 comprises a reel body 1 to which a handle 3 is attached, a rotor 4 provided in front of the reel body 1 and rotated by the winding operation of the handle 3, and a spool 5 provided in front of the rotor 4 and reciprocating back and forth by the winding operation of the handle 3.

[0024] The reel body 1 comprises a body 10 having a side opening 11 that opens toward the left side, legs 12 that extend upward from the top of the body 10 and have a rod attachment part 12a at their tips that is attached to a fishing rod, a cover member 13 that closes the side opening 11, and a protective cover 14 attached to the rear of the body 10.

[0025] A drive shaft tube (not shown) and a spool shaft 8 (partially shown in FIG. 2) are attached to the reel unit 1 so as to protrude forward from the front of the body 10. A rotor 4 is attached to the front end of the drive shaft tube. A spool 5 is attached to the front end of the spool shaft 8.

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

[0027] Within the body 10, there are provided a drive gear shaft 2 extending in the left-right direction and a spool reciprocating device 60 as components for driving the drive shaft cylinder and spool shaft 8 in conjunction with the operation of the handle 3. As shown in Fig. 2, the drive gear shaft 2 is provided with a drive gear 21 and a gear 22. The drive gear shaft 2 is rotatably supported by a lid member 13 and a body 10 via left and right ball bearings 15 and 16. A handle shaft 31 provided on the handle 3 is attached to the drive gear shaft 2 by screwing. Thus, the handle 3 and the drive gear shaft 2 rotate integrally. Details of the drive gear shaft 2 and the handle 3 will be described later.

[0028] The spool reciprocating device 60 includes a slider 61 and an interlocking gear 62, and is configured such that the slider 61 moves in the front-rear direction along a guide shaft (not shown) extending in the front-rear direction of the body 10. The slider 61 is fixed to the rear end of the spool shaft 8 and is provided with a guide groove 61a that opens to the right. The interlocking gear 62 is supported by a support member 63 provided on the right side wall 10a of the body 10 and meshes with the gear 22 of the drive gear shaft 2 to rotate. The interlocking gear 62 is provided with an eccentric protrusion 62a that engages with the guide groove 61a of the slider 61.

[0029] From the above, when the drive gear shaft 2 and the gear 22 rotate by the winding operation of the handle 3, the interlocking gear 62 rotates, and its rotational motion is converted into the front-rear motion of the slider 61 via the eccentric protrusion 62a and the guide groove 61a. Thereby, the spool shaft 8 (spool 5) reciprocates in the front-rear direction.

[0030] Next, the drive gear shaft 2, the handle 3, and their connection structure will be described in detail. As shown in Fig. 2, the drive gear shaft 2 has a substantially cylindrical shape and has a stepped circular outer peripheral surface along the central axis O1 and screw holes 23, 23 that open to the left and right. The handle 3 can be attached to the left side by the left screw hole 23, and the handle 3 can be attached to the right side by the right screw hole 23 (see Fig. 5).

[0031] Each screw hole 23 has a large-diameter inner peripheral surface 23a formed on the opening side and a small-diameter inner peripheral surface 23b formed on the rear side of the large-diameter inner peripheral surface 23a and having a smaller diameter than the large-diameter inner peripheral surface 23a. Of these, the left large-diameter inner peripheral surface 23a and the right small-diameter inner peripheral surface 23b are each formed with an internal thread for threading with the handle shaft 31. The internal thread of the left large-diameter inner peripheral surface 23a is a reverse thread, which is opposite to the normal thread. On the other hand, the internal thread of the right small-diameter inner peripheral surface 23b is a normal thread.

[0032] A drive gear 21 is integrally formed on the outer peripheral surface of the drive gear shaft 2 at a position offset to the left from the center in the left-right direction. A gear 22 is also integrally formed on the drive gear shaft 2 at a position offset to the right from the center in the left-right direction. The drive gear shaft 2 and the drive gear 21 are made of an aluminum alloy. In a fishing spinning reel 100 that is designed for high-load winding operations in which fishing line is wound under high loads (hereinafter referred to as a "high-load fishing spinning reel"), the drive gear shaft 2 may be made of, for example, stainless steel or steel instead of an aluminum alloy.

[0033] Next, with reference to FIG. 3, the connecting structure on the left side of the drive gear shaft 2 will be described in detail. The left outer peripheral surface of the drive gear shaft 2 is formed with a first outer peripheral portion 24 that continues to the left side of the drive gear 21, and a second outer peripheral portion 25 that continues to the left side of the first outer peripheral portion 24 and has a smaller diameter than the first outer peripheral portion 24. A ring-shaped stepped surface 25a that is perpendicular to the central axis O1 (see FIG. 2, the same applies below) is formed between the first outer peripheral portion 24 and the second outer peripheral portion 25. The outer peripheral surface of the second outer peripheral portion 25 functions as a seating surface onto which the left ball bearing 15 is fitted. The stepped surface 25a also functions as a positioning surface that positions the right side surface of the inner ring 15a of the left ball bearing 15 via an annular washer 24a. The outer ring 15b of the left ball bearing 15 is fitted into the circular inner peripheral surface of the cover member 13 centered on the central axis O1.

[0034] The left end portion of the second outer peripheral portion 25 has a size that protrudes leftward beyond the left side surface of the inner ring 15a of the left ball bearing 15. The left end outer peripheral surface 25b of the second outer peripheral portion 25 is formed as a tapered inclined surface that narrows toward the left end, and is spaced apart from the inner ring 15a of the left ball bearing 15. As a result, the outer diameter of the left end portion of the drive gear shaft 2 is smaller than the inner diameter of the left ball bearing 15. Here, the left and right ball bearings 15, 16 are formed of stainless steel.

[0035] Next, with reference to FIG. 4, the connection structure on the right side of the drive gear shaft 2 will be described in detail. A third outer peripheral portion 26 that is continuous with the right side of the gear 22 is formed on the right outer peripheral surface of the drive gear shaft 2. A positioning projection 27 that protrudes radially outward is formed on the outer peripheral surface of the third outer peripheral portion 26. On the right side of the positioning projection 27, the outer peripheral surface of the third outer peripheral portion 26 functions as a seating surface on which the right ball bearing 16 is externally fitted. Further, the right side surface 27a of the positioning projection 27 functions as a positioning surface on which the left side surface of the inner ring 16a of the right ball bearing 16 is positioned. Note that the outer ring 16b of the right ball bearing 16 is fitted via a washer 10c to the left side of an annular inner peripheral portion 10b centered on the central axis O1 on the right side wall 10a of the reel body 1. Further, a cover member 17 is attached to the right side wall 10a (see FIG. 2).

[0036] The right end portion of the third outer peripheral portion 26 has a size that protrudes rightward beyond the right side surface of the inner ring 16a of the right ball bearing 16. The right end outer peripheral surface 26b of the third outer peripheral portion 26 is formed as a tapered inclined surface that narrows toward the right end, similar to the above-described left end outer peripheral surface 25b, and is spaced apart from the inner ring 16a of the right ball bearing 16. As a result, the outer diameter of the right end portion of the third outer peripheral portion 26 is smaller than the inner diameter of the right ball bearing 16.

[0037] Next, the handle 3 will be described. As shown in FIG. 2, the handle 3 includes an arm portion 32 and a handle shaft 31 that is connected to the arm portion 32 and has a stepped circular outer peripheral surface along the central axis O1. A cover member 3a is attached to the connecting portion between the arm portion 32 and the handle shaft 31.

[0038] The handle shaft 31 includes a large-diameter base portion 33 connected to the arm portion 32, and a small-diameter insertion portion 34 that is continuous with the base portion 33 and is formed to have a smaller diameter than the base portion 33 and is inserted into the screw hole 23 of the drive gear shaft 2. The handle shaft 31 is formed of a high-strength material having a higher strength than the drive gear shaft 2, for example, stainless steel or steel. Note that the handle shaft 31 may be formed of other high-strength materials, for example, a titanium alloy or an aluminum alloy. Here, the strength relationship among the drive gear shaft 2, the ball bearings 15 and 16, and the handle shaft 31 is such that handle shaft 31 > ball bearings 15 and 16 > drive gear shaft 2. In the high-load fishing spinning reel 100, these strength relationships can be set as handle shaft 31 ≒ drive gear shaft 2 > ball bearings 15 and 16. Also, as other strength relationships, they can be set as ball bearings 15 and 16 > handle shaft 31 ≒ drive gear shaft 2. In this way, in a setting where the strength of the ball bearings 15 and 16 is higher than that of the handle shaft 31 and the drive gear shaft 2, damage to the ball bearings 15 and 16 can be suppressed and the rotation feeling of the handle 3 can be maintained well over a long period. In particular, in the high-load fishing spinning reel 100, since the load acting on the drive gear shaft 2 is high, it is preferable to increase the strength of the ball bearings 15 and 16.

[0039] The base portion 33 has a substantially bottomed cylindrical shape with an opening on the arm portion 32 side, and the inside is hollow. The insertion portion 34 has a substantially cylindrical shape and includes a first insertion portion 34a continuous with the bottom of the base portion 33 and a second insertion portion 34b continuous with the first insertion portion 34a. The first insertion portion 34a has an outer peripheral surface with a smaller diameter than the base portion 33. A contact portion 36 is integrally provided at the boundary portion between the base portion 33 and the first insertion portion 34a.

[0040] As shown in Figure 3, the contact portion 36 includes a protrusion 36a and a contact surface 36b. The protrusion 36a has a circular ring shape and protrudes rightward from the outer circumferential edge of the base portion 33. The protrusion 36a has a generally rectangular cross section. The protrusion 36a faces the left side surface of the inner ring 15a of the left ball bearing 15 and is configured to come into contact with the left side surface of the inner ring 15a during the process of tightening the handle shaft 31 to the drive gear shaft 2.

[0041] The contact surface 36b is a ring-shaped flat surface that is continuous with the radially inner side of the protrusion 36a and is perpendicular to the central axis O1. The contact surface 36b faces the left end surface of the second outer peripheral portion 25 of the drive gear shaft 2 and is configured to come into contact with the left end surface of the second outer peripheral portion 25 during the process of tightening the handle shaft 31 to the drive gear shaft 2.

[0042] In this embodiment, the contact surface 36b is set to contact the left end surface of the second outer peripheral portion 25 at the same time that the protrusion 36a contacts the left side surface of the inner ring 15a. That is, the contact portion 36 is configured to contact the second outer peripheral portion 25 on the drive gear shaft 2 side and the inner ring 15a by utilizing both the protruding portion 36a and the contact surface 36b of the contact portion 36.

[0043] A gap S1 is formed radially inward of the protrusion 36a. The gap S1 is defined by the radial inner circumferential surface of the protrusion 36a, the abutment surface 36b, the left end outer circumferential surface 25b of the second outer circumferential portion 25, and the inner ring 15a of the left ball bearing 15, and has a generally triangular cross section.

[0044] In this embodiment, as described above, it is set such that when the protruding portion 36a abuts against the left side surface of the inner ring 15a, the abutting surface 36b simultaneously abuts against the left end surface of the second outer peripheral portion 25. However, the present invention is not limited thereto. For example, when the protruding portion 36a abuts against the left side surface of the inner ring 15a, a gap may be formed between the left end surface of the second outer peripheral portion 25 and the abutting surface 36b. That is, the handle shaft 31 may be configured to be fixed to the drive gear shaft 2 by crimping the protruding portion 36a against the inner ring 15a.

[0045] Conversely, in the process of tightening the handle shaft 31 to the drive gear shaft 2, the abutting surface 36b may first abut against the left end surface of the second outer peripheral portion 25, and then the protruding portion 36a may abut against the left side surface of the inner ring 15a.

[0046] In this case, in the tightening process, since the abutting surface 36b first abuts against the left end surface of the second outer peripheral portion 25, the left end portion of the second outer peripheral portion 25 can be actively buckled and deformed by the abutment of the abutting portion 36 made of a high-strength material, while the protruding portion 36a can be crimped against the left side surface of the inner ring 15a. At this time, the gap portion S1 formed at the left end portion of the second outer peripheral portion 25 functions as a space for escaping the buckled and deformed portion. That is, the protruding portion 36a can be crimped against the left side surface of the inner ring 15a while promoting suitable buckling deformation of the left end portion of the second outer peripheral portion 25.

[0047] FIG. 5 is an enlarged cross-sectional view showing a connection structure between the drive gear shaft 2 and the handle shaft 31 in the case of a right handle. In the case of a right handle, the second insertion portion 34b at the tip end side of the handle shaft 31 is screwed into the small-diameter inner peripheral surface 23b on the inner side of the screw hole 23. The protruding portion 36a of the abutting portion 36 faces the right side surface of the inner ring 16a of the right ball bearing 16 and abuts against the right side surface of the inner ring 16a in the process of tightening the handle shaft 31 to the drive gear shaft 2.

[0048] On the other hand, the contact surface 36b faces the right end surface of the third outer peripheral portion 26 of the drive gear shaft 2, and contacts the right end surface of the third outer peripheral portion 26 during the process of tightening the handle shaft 31 to the drive gear shaft 2. In this case, too, the contact surface 36b is set to contact the right end surface of the third outer peripheral portion 26 at the same time that the protrusion 36a contacts the right side surface of the inner ring 16a. In other words, the entire left side surface of the contact portion 36 is used to contact the third outer peripheral portion 26 on the drive gear shaft 2 side and the inner ring 16a.

[0049] Even with the handlebars in the right-hand position, a gap S1 is formed radially inside the protrusion 36a. The gap S1 is defined by the radial inner circumferential surface of the protrusion 36a, the abutment surface 36b, the right-end outer circumferential surface 26b of the third outer circumferential portion 26, and the inner ring 16a of the right ball bearing 16, and has a generally triangular cross section.

[0050] As described above, the contact surface 36b is set to contact the right end surface of the third outer peripheral portion 26 at the same time that the protrusion 36a contacts the right side surface of the inner ring 16a, but this is not limiting. For example, a gap may be formed between the right end surface of the third outer peripheral portion 26 and the contact surface 36b when the protrusion 36a contacts the right side surface of the inner ring 16a. In other words, the handle shaft 31 may be fixed to the drive gear shaft 2 mainly by the protrusion 36a being pressed against the right side surface of the inner ring 16a.

[0051] Alternatively, in the process of tightening the handle shaft 31 to the drive gear shaft 2, the abutment surface 36b may first abut against the right end surface of the third outer peripheral portion 26, and then the protrusion 36a may abut against the right side surface of the inner ring 16a.

[0052] In this case, during the tightening process, the contact surface 36b first contacts the right end surface of the third outer peripheral portion 26, so that the contact surface 36b, made of a high-strength material, contacts the right end of the third outer peripheral portion 26, actively buckling the right end portion while crimping the protrusion 36a onto the left side surface of the inner ring 16a. At this time, the gap S1 formed at the right end of the third outer peripheral portion 26 functions as a space for allowing the buckled portion to escape. In other words, the protrusion 36a can be crimped onto the right side surface of the inner ring 16a while promoting favorable buckling of the right end portion of the third outer peripheral portion 26.

[0053] According to the present embodiment described above, for example, when the handle shaft 31 is threaded into the drive gear shaft 2 in left-hand drive mode, the abutment portion 36 (protrusion 36a) of the handle shaft 31 approaches and abuts against the inner ring 15a of the left ball bearing 15, and the handle shaft 31 is fixed to the drive gear shaft 2. In other words, the handle shaft 31 can be fixed to the drive gear shaft 2 in a state where the pressure force caused by the threaded engagement of the handle shaft 31 is suppressed by the degree of abutment of the abutment portion 36 against the inner ring 15a of the left ball bearing 15. This makes it possible to prevent the end of the drive gear shaft 2 from buckling when the handle shaft 31 is threaded into the drive gear shaft 2.

[0054] Furthermore, because the abutment portion 36 is provided integrally with the handle shaft 31, there is no need to interpose a cylindrical member between the drive gear shaft 2 and the handle shaft 31 as in the past. This simplifies the connection structure between the drive gear shaft 2 and the handle shaft 31 and reduces costs.

[0055] Furthermore, since the contact portion 36 is provided integrally with the handle shaft 31, the handle shaft 31 can be manufactured with high dimensional accuracy and has higher strength than when a conventional cylindrical member is used.

[0056] In addition, at the same time that the protrusion 36a abuts against the left side surface of the inner ring 15a, the abutment surface 36b simultaneously abuts against the left end surface of the second outer peripheral portion 25, so that the portion (area) that supports the axial force due to the threaded engagement of the handle shaft 31 can be increased, thereby improving strength.

[0057] Also, since the handle shaft 31 is made of a high-strength material with higher strength than the left ball bearing 15, when the protruding portion 36a abuts against the left side surface of the inner ring 15a, the following operational effects can be obtained when a gap is formed between the left end surface of the second outer peripheral portion 25 and the abutting surface 36b. That is, even if the left ball bearing 15 is deformed by being pushed by the protruding portion 36a due to excessive tightening of the handle shaft 31, since it is only necessary to replace the left ball bearing 15, which is less expensive than the drive gear shaft 2, maintenance is easy and repair costs can be reduced.

[0058] Conversely, when the abutting surface 36b abuts against the left end surface of the second outer peripheral portion 25 first and then the protruding portion 36a abuts against the left side surface of the inner ring 15a, the abutting portion 36 causes the left end portion of the second outer peripheral portion 25 to undergo buckling deformation before abutting against the inner ring 15a. Therefore, also in this case, since the portion that finally supports the axial force due to the screwing of the handle shaft 31 can be increased, the strength can be improved. The operational effects described above can be similarly obtained when the handle shaft 31 is screwed to the right side of the drive gear shaft 2.

[0059] (Second Embodiment) The fishing spinning reel according to the second embodiment of the present invention will be described with reference to FIG. 6. The difference between this embodiment and the first embodiment is that the abutting portion 36A is configured with a flat surface.

[0060] The abutting portion 36A includes an abutting surface 37 orthogonal to the central axis O1. The abutting surface 37 forms a flat surface across both a portion facing the left side surface of the inner ring 15a and a portion facing the left end surface of the second outer peripheral portion 25. On the other hand, the left side surface of the inner ring 15a and the left end surface of the second outer peripheral portion 25 are also flush in the direction orthogonal to the central axis O1 and are set to be flat corresponding to the abutting surface 37 of the abutting portion 36A.

[0061] Thus, in the process of tightening the handle shaft 31 to the drive gear shaft 2, the contact surface 37 of the contact portion 36A comes into contact with the left side surface of the inner ring 15a and the left end surface of the second outer peripheral portion 25 simultaneously. This is the same in the connection structure for the right handle.

[0062] In addition, in this embodiment, instead of the gap portion S1 described in the first embodiment, a gap portion S2 having a different shape is formed at the left end portion of the second outer peripheral portion 25. The gap portion S2 is formed by making the left end outer peripheral surface 25c of the second outer peripheral portion 25 into a stepped surface with a small diameter.

[0063] According to the present embodiment described above, in addition to the same operational effects as those described in the first embodiment, since the contact surface 37 forming a flat surface is provided, the workability of the handle shaft 31 is improved. Thereby, cost reduction can be achieved.

[0064] In this embodiment, the contact surface 37 of the contact portion 36A is set to come into contact with the left side surface of the inner ring 15a and the left end surface of the second outer peripheral portion 25 simultaneously, but it is not limited thereto. For example, when the contact surface 37 comes into contact with the left side surface of the inner ring 15a, a gap may be formed between the left end surface of the second outer peripheral portion 25 and the contact surface 37. That is, the handle shaft 31 may be configured to be fixed to the drive gear shaft 2 by the crimping of the contact surface 37 to the inner ring 15a. Also in this case, since the contact surface 37 is a flat surface, the workability of the handle shaft 31 is improved and cost reduction can be achieved.

[0065] Also, even if the left ball bearing 15 is deformed by being pushed by the contact portion 36A due to excessive tightening of the handle shaft 31, since the left ball bearing 15 which is less expensive than the drive gear shaft 2 can be replaced, maintenance is easy and the repair cost can be reduced.

[0066] Conversely, the abutment surface 37 may be set to first abut against the left end surface of the second outer peripheral portion 25, and then abut against the left side surface of the inner ring 15a. In this case as well, since the abutment surface 37 is a flat surface, the workability of the handle shaft 31 is improved and costs can be reduced. In this case, the abutment surface 37 abuts against the inner ring 15a, causing the left end of the second outer peripheral portion 25 to buckle and deform, and the abutment surface 37 then abuts against the inner ring 15a, ultimately increasing the area that supports the axial force due to the threaded engagement of the handle shaft 31, thereby improving strength. The above-mentioned operational effects can be similarly obtained when the handle shaft 31 is screwed onto the right side of the drive gear shaft 2.

[0067] Although the embodiments have been described above, the present invention is not limited to the examples shown in the embodiments. For example, in the above-described embodiments, the abutment portions 36, 36A are configured using a step structure formed at the boundary between the base portion 33 and the insertion portion 34 of the handle shaft 31, but this is not limited to this, and a flange-shaped peripheral wall or the like that protrudes outward in the circumferential direction may be partially formed on the outer periphery of the handle shaft 31, and the side surface of the flange may be used to abut against the inner rings 15a, 16a. In this case, the same effects as those described in the above-described embodiments can be obtained.

[0068] In addition, in each of the above-described embodiments, gaps S1 and S2 are formed in the drive gear shaft 2, but this is not limited thereto and they do not necessarily have to be provided as long as they are configured in a way that does not cause buckling deformation. In addition, various shapes may be adopted for the left end of the second outer peripheral portion 25 and the right end of the third outer peripheral portion 26 to form the gaps S1 and S2.

[0069] Furthermore, in each of the above embodiments, the handle shaft 31 is shown connected to the arm portion 32, but this is not limited to this, and the handle shaft 31 may be integrally formed with the arm portion 32.

[0070] Furthermore, in each of the above embodiments, a fishing spinning reel 100 in which the cover member 13 is screwed into the side opening 11 has been described, but this is not limited to this, and the present invention can also be suitably applied to a fishing spinning reel in which the cover member is fixed to the reel body using screws or other fixing means. [Explanation of symbols]

[0071] 1 reel body 2 Drive gear shaft 3 Handle 15 Left ball bearing (ball bearing) 15a Inner Circle 16 Right ball bearing (ball bearing) 16a Inner Circle 31 Handle shaft 33 Base 34 Insertion section 36,36A Contact part 100 Fishing Spinning Reel

Claims

1. A spinning reel for fishing, in which a handle is detachably attached to a reel body, a drive gear shaft provided on the reel body, a ball bearing externally fitted to the drive gear shaft and rotatably supporting the drive gear shaft, and a handle shaft provided on the handle and screwed onto the drive gear shaft, wherein the handle shaft is integrally provided with a contact portion that contacts the inner ring of the ball bearing by screwing onto the drive gear shaft, the contact portion simultaneously contacts the inner ring of the ball bearing and the end face of the drive gear shaft when the handle shaft is screwed onto the drive gear shaft, or contacts the end face of the drive gear shaft and then contacts the inner ring of the ball bearing when the handle shaft is screwed onto the drive gear shaft. A spinning reel for fishing is characterized by this.

2. The handle shaft includes a large-diameter base portion and an insertion portion formed with a smaller diameter than the base portion and inserted into the drive gear shaft, The contact portion is provided at a boundary portion between the base portion and the insertion portion. The spinning reel for fishing according to claim 1 is characterized by this.

3. The handle shaft is made of a high-strength material having a higher strength than the ball bearing. The spinning reel for fishing according to claim 1 or claim 2 is characterized by this.

4. The outer diameter of the end portion of the drive gear shaft is smaller than the inner diameter of the ball bearing. The spinning reel for fishing according to any one of claims 1 to 3 is characterized by this.

5. The contact portion includes a portion facing the ball bearing and a portion facing the end portion of the drive gear shaft, and a flat surface is formed across these two portions. The spinning reel for fishing according to any one of claims 1 to 4 is characterized by this.

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