JP7236208B2 - spinning reel - Google Patents

Description

The present invention relates to a support structure for a spool shaft and rotor rotating shaft of a fishing spinning reel.

A spinning reel for fishing is equipped with a spool for winding the fishing line to a uniform thickness and a rotor for guiding the fishing line at the tip. rotate to Rotation of the handle is converted into sliding of the spool shaft by an oscillating mechanism inside the reel, resulting in forward and backward movement of the spool. On the other hand, the rotation of the rotor is converted from the rotation of the handle to the rotation of a pinion fixed to the rear end of a cylindrical rotor rotating shaft (rotary shaft tube) provided coaxially with the spool shaft so as to surround the spool shaft. , rotates the rotor fixed to the rotary shaft tube. Due to this structure, the spool shaft and the rotating barrel are placed close to each other, so if a strong load is applied during the winding operation, the friction between them will increase, and it will not be used for a long time in this state. If it continues, there is a problem that problems such as uneven wear and seizure occur. Further, if the contact surfaces of the two are finished to have a highly accurate smooth surface in order to prevent this, there is a problem that the manufacturing cost increases.

In order to solve the above problem, in Patent Document 1, a small gap is formed between the inner peripheral surface of the rotating shaft tube of the rotor and the outer peripheral surface of the spool shaft by holding the front and rear portions of the rotating shaft tube with bearings. are provided. However, in the configuration of Patent Document 1, since the bearing that supports the pinion portion also supports the spool shaft at the same time, there is a drawback that the sliding motion of the spool shaft tends to generate resistance when a strong load is applied. Patent Document 2 discloses a method for improving this drawback. In order to overcome the drawback of Patent Document 1, whose structure is shown schematically in FIG. It is configured to distribute the load.

However, in the configuration of Patent Document 2, the number of bearings is increased compared to the configuration of Patent Document 1, so the number of contact points is increased, and the number of parts is increased to complicate the structure. There is a problem that it is disadvantageous for reduction. Furthermore, in the structure in which the rotor nut 11 is fixed via the threaded portion 10 of the rotating shaft tube 9, it is difficult to eliminate radial rattling of the threaded portion 10. As a result, the rotor nut 11 supports the front bearing 7. , there is a problem that good rotation cannot be obtained because the center position is displaced from the center of the rotary shaft tube 9 by the amount of rattling of the screw portion 10 described above.

Japanese Utility Model Publication No. 50-24542 Japanese Patent No. 3563656 U.S. Pat. No. 6,050,513

It is an object of the present invention to solve the above-described problem of contact between the reel rotating shaft cylinder and the spool shaft, improve the accuracy of the center position of the gear, which is related to the rotational performance of the reel, and improve the operability and durability of the reel. To provide a spinning reel for fishing which is easy to maintain.

In the present invention, the housing for holding the mechanical parts including the handle shaft, the oscillating mechanism, and the spool shaft in predetermined positions in the reel body is formed as one integral part. Instead of the conventional support method using ball bearings between the two, resin bearings are used.

The present invention provides the following spinning reel.

Rotation of the handle shaft is converted to sliding of the spool shaft by an oscillating mechanism inside the reel body, so that the spool coupled to the spool shaft slides in the front-rear direction, and the rotation of the handle shaft Rotation of a pinion that surrounds a spool shaft and is coaxial with the spool shaft is transmitted as rotation of a pinion having a gear portion and a rotary shaft tubular portion, and a rotor coupled to the rotary shaft tubular portion of the pinion rotates. In spinning reels for
A housing for holding mechanical parts including the handle shaft, the oscillating mechanism, and the spool shaft in predetermined positions in the reel body is formed as one integral part,
the spool shaft movably contacts the reel body via a rear bushing;
the rotating shaft tubular portion rotatably contacts the spool shaft via a front bushing;
A predetermined gap is maintained by the rear bushing and the front bushing between the outer circumference of the spool shaft and the inner circumference of the rotating shaft cylindrical portion,
The front bushing is inserted into the gap after the rotary shaft cylindrical portion is passed through the spool shaft,
At least one of the rear bushing and the front bushing is made of resin.

Also, the resin material may be at least one of POM (polyacetal), PA (polyamide), PPS (polyphenylene sulfite), and PEEK (polyetheretherketone).

A spinning reel for fishing can be provided that has improved reel operability and durability and that is easy to maintain by employing a support structure for the rotating shaft tubular portion and the spool shaft as in the present invention.

FIG. 1 is a schematic cross-sectional view showing the structure of the main mechanism of a conventional spinning reel. FIG. 2A is a cross-sectional view of the main mechanical parts of a spinning reel according to an embodiment of the invention. FIG. 2B is an enlarged view of portion B of FIG. 2A. FIG. 2C is an enlarged view of portion C of FIG. 2A.

Embodiments of the invention are described in detail below with reference to the drawings. However, the present invention is not limited to the embodiments described below.

FIG. 2A shows a cross-sectional view of the structure of the reel body 120 and rotor 130 portions of the fishing spinning reel 100 according to an embodiment of the present invention. 2B3 is an enlarged view of the dotted line portion B in FIG. 2A, and FIG. 2C4 is an enlarged view of the dotted line portion C. As shown in FIG. The rotation of the handle 110 is converted into sliding (reciprocating) motion of the spool shaft 106 by an oscillating mechanism composed of the gear 102, the slider 104, etc., and the spool 160 fixed to the spool shaft 106 is reciprocated. At the same time, the rotation of the handle 110 is combined with the rotation of the face gear 114 coupled to the handle shaft 112, the rotation of the pinion gear portion 133 (hereinafter abbreviated as the gear portion 133), and the rotation of the pinion rotating shaft cylindrical portion 134 (hereinafter abbreviated as the rotating shaft). 134), and rotates the rotor 130 fixed to the rotating shaft cylinder portion 134. As shown in FIG. The rotating shaft tubular portion 134 is rotatably held by the reel body 120 via two ball bearings 136 and 138 . A one-way bearing 137 rotates the rotor 130 only in one direction. Further, the pinion according to the present embodiment is used as an integral and independent part having the gear part and the rotating shaft tube part, but it is not limited to this, and if the function can be realized, for example, The gear portion and the rotating shaft tube portion may be used as independent parts and combined by a connecting means such as welding to be used as a pinion.

As can be seen from FIG. 2A, since the spool shaft 106 and the rotating shaft tube portion 134 always move in a direction perpendicular to each other, by providing a gap 132 of 0.1 to 0.2 mm between them, avoiding friction. In order to maintain this gap 132, the spool shaft 106 is movably held in the reel body 120 via a cylindrical rear bushing 122 with a collar, and the rotary shaft tube 134 is a cylindrical front bushing with a collar. It is in rotatable contact with spool shaft 106 via bushing 142 . A nut 140 is secured to the rotary shaft tube portion 134 to prevent movement of the front bushing 142 from a predetermined position. The front bushing 142 and/or the rear bushing 122 are not limited to bushings, and may be replaced with bearings according to actual situations.

The present invention uses resin as the material for rear bushing 122 and/or front bushing 142 . Hard materials such as POM (polyacetal), PA (polyamide), PPS (polyphenylene sulfite), and PEEK (polyetheretherketone) can be used as resin materials. This makes it possible to reduce the cost of the bearing. However, the material of the rear bushing and the front bushing is not limited to this, and inorganic materials such as carbon and ceramics may be used as long as they are wear-resistant.

Further, according to the present invention, the gearbox 108 containing parts such as the handle shaft 112, the face gear 114, and the oscillating mechanism in the reel body is a gearbox as described in detail in Patent Document 3. It is constructed as one integral piece to hold it precisely in place inside 108 . Specifically, the holes of the gear box 108 into which the bearings 116 and 118 supporting the face gear 114 are fitted are formed by CNC processing, so high positional accuracy can be maintained. Furthermore, the coaxial rotating shaft cylinder portion 134, the bearings 136 and 138 that support the spool shaft 106, and the holes of the gear box 108 in which the rear bushing 122 is fitted are also formed with high positional accuracy by CNC machining. Therefore, high coaxial accuracy can be maintained.

In addition to this, as described above, instead of using a conventional ball bearing (for example, Patent Document 2) as the front bushing part with particularly large friction, a configuration is adopted in which a resin cylindrical bearing is inserted into the gap. As a result, the housing of the gearbox 108 containing the above components and the spool shaft 106 held therein can be easily pulled out from the rotating shaft tubular portion 134 coupled to the rotor 130 . On the other hand, when the rotating shaft tube portion 134 and the rotor 130 are attached, after the rotating shaft tube portion 134 is passed through the spool shaft 106 , the front bushing 142 is inserted into the gap and fixed with the nut 140 . Therefore, maintenance, repair, and reassembly of the reel can be performed more easily than in the conventional structure using ball bearings as bearings.

On the other hand, in the conventional gearbox structure, parts such as the handle shaft, face gear, and oscillating mechanism are attached to the housing, and then the side plate is screwed to the housing. It is not easy to assemble while maintaining the positional relationship between 112 and the spool shaft 106 in an accurate vertical position. It has a drawback that friction with the portion 134 is likely to occur. According to the present invention, since the vertical positional relationship between the handle shaft 112 and the spool shaft 106 is always accurately maintained, the clearance 132 can always be accurately maintained at a predetermined value even after the reel is reassembled after maintenance or repair. can be maintained.

1 reel body 2 spool shaft 4 rotor 5 handle shaft 6 pinion 7 front bearing 8 rear bushing 9 rotating shaft tube 10 screw portion 11 rotor nut 100 spinning reel 102 gear 104 slider 106 spool shaft 108 gear box 110 handle 112 handle shaft 114 face gears 116, 118 bearing 120 reel body 122 rear bushing 130 rotor 132 clearance;
133 pinion gear part 134 pinion rotating shaft cylindrical part 136, 138 ball bearing 137 one-way bearing 140 nut 142 front bushing

Claims (2)

Rotation of the handle shaft is converted to sliding of the spool shaft by an oscillating mechanism inside the reel body, so that the spool coupled to the spool shaft slides in the front-rear direction, and the rotation of the handle shaft Rotation of a pinion that surrounds a spool shaft is transmitted, a rotary shaft tube portion of the pinion is coaxial with the spool shaft, and a rotor connected to the rotary shaft tube portion of the pinion rotates. in spinning reels,
A housing for holding mechanical parts including the handle shaft, the oscillating mechanism, and the spool shaft in predetermined positions in the reel body is formed as one integral part,
The handle shaft is rotatably fixed on both the handle side and the opposite side of the housing, and a face gear that engages with the pinion and rotates the rotary shaft cylindrical portion is attached to the spool shaft. is fixed to the handle shaft on the side opposite to the handle side,
The spool shaft is held in the rotating shaft cylinder by a flanged front bushing and a flanged rear bushing,
The rear bushing is inserted between the spool shaft and the reel body to movably contact with both, and the front surface of the collar of the rear bushing is movably contacted with the rear end portion of the rotating shaft cylinder. holding the rotating shaft cylinder,
The front bushing is inserted between the spool shaft and the rotary shaft tubular portion to movably contact with both, and has a predetermined space between the outer circumference of the spool shaft and the inner circumference of the rotary shaft tubular portion . maintain a gap of
A spinning reel, wherein at least one of the rear bushing and the front bushing is made of resin. 2. The spinning reel of claim 1, wherein the resin material is at least one of polyacetal, polyamide, PPS polyphenylene sulfite and polyetheretherketone.

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