JP4512425B2 - Spinning reel master gear - Google Patents

Description

  The present invention relates to a master gear, and more particularly to a spinning reel master gear that is rotatably supported by a reel body and transmits rotation of a screw-type handle to a rotor via a pinion gear.

  In general, a spinning reel has a reel body mounted on a fishing rod, a rotor rotatably supported on the reel body, and a spool that is provided in front of the rotor and on which an fishing line is wound around an outer periphery. The rotor rotates integrally with a pinion gear provided on the outer peripheral side of the spool shaft. The spool is reciprocated back and forth by an oscillating mechanism having an intermediate gear meshing with the pinion gear. The pinion gear meshes with a master gear having a shaft portion orthogonal to the pinion gear, and rotates by rotation of the handle. The outer periphery of both ends of the shaft portion of the master gear is rotatably mounted on the reel body by a bearing or the like. A handle is attached to the shaft portion of the master gear, and a gear portion is provided on the outer periphery. As such a spinning reel, one having a handle screwed into a shaft portion of a master gear is known (see, for example, Patent Document 1).

Such a master gear is a face gear that meshes with a pinion gear, and has a cylindrical shaft portion formed with a female screw into which a handle is screwed at an end portion, and a disk-like shape that is provided on the outer periphery of the shaft portion and meshes with the pinion gear. And a gear part. In this type of master gear, for example, the shaft portion and the gear portion are integrally formed by forging of an aluminum alloy.
JP-A-10-210901

  The conventional master gear can maintain high strength because the shaft portion and the gear portion are integrally formed by forging. Moreover, in this master gear, since the shaft part and the gear part are formed of an aluminum alloy, the overall weight can be reduced.

  In such a master gear, in order to further facilitate the formation of the gear portion, it is conceivable that the shaft portion and the gear portion are integrally formed by die casting instead of forging. However, if a female screw for mounting the handle is formed on the die-cast shaft portion, the female screw is crushed, which may reduce the strength of the shaft portion.

  Therefore, it is conceivable that the shaft portion of the master gear is formed of a separate member such as a stainless alloy, but in this case, since the stainless alloy has a larger specific gravity than the aluminum alloy, the weight of the shaft portion increases, There is a risk of inhibiting the overall weight reduction.

  An object of the present invention is to facilitate the formation of a gear portion and to reduce the overall weight while maintaining the strength of a shaft portion high in the master gear of a spinning reel.

A spinning reel master gear according to a first aspect of the present invention is a spinning reel master gear that is rotatably supported by a reel body and transmits the rotation of a screw-type handle to a rotor via a pinion gear, and the handle is screwed into the master gear. A shaft portion that has a female screw at its end and is rotatably provided on the reel body and is formed by cutting aluminum alloy, and a gear portion that is insert-molded by aluminum alloy die casting and meshed with the pinion gear. . The shaft portion and the gear portion are integrally anodized after insert molding.

In this master gear, the gear portion is insert-molded by a shaft portion formed by cutting an aluminum alloy and an aluminum alloy die casting. Here, since the shaft portion and the gear portion are formed of an aluminum alloy which is a light alloy, the overall weight can be reduced. Further, since the internal thread is cut before the shaft portion is insert-molded into the gear portion, the internal thread is less likely to be crushed than when the internal thread is formed in the die cast shaft portion. High strength can be maintained. Furthermore, since the gear part is insert-molded by the shaft part and die casting, the gear part can be easily formed. Furthermore, in this case, the corrosion resistance can be easily and reliably improved by subjecting the surface of the shaft portion and the gear portion formed of the aluminum alloy to anodized integrally.

Master gear of a spinning reel according to a second aspect is the invention 1 of the master gear, the shaft portion and the gear portion are formed by different materials of aluminum alloy. In this case, for example, by using a high-strength aluminum alloy with the shaft portion compared to the gear portion, the strength can be maintained high even if the internal thread is cut.

A master gear of a spinning reel according to a third aspect of the invention is the master gear of the first or second aspect , wherein the shaft portion is a cylindrical member on which the handle is non-rotatably mounted on the inner periphery .

A spinning reel master gear according to a fourth aspect of the present invention is the master gear according to any one of the first to third aspects, wherein the shaft portion has female threads formed at both ends. In this case, the left handle and the right handle can be exchanged.

A master gear of a spinning reel according to a fifth aspect of the present invention is the master gear according to any one of the first to fourth aspects, wherein the shaft portion is formed with a protrusion for preventing the gear portion from rotating on the outer peripheral portion. In this case, when the shaft portion is insert-molded into the gear portion, the projection portion is locked to the gear portion, so that the shaft portion and the gear portion can be firmly fixed.

  According to the present invention, in the master gear of a spinning reel, the gear portion is insert-molded with an aluminum alloy die-casting and an aluminum alloy die-casting, thereby maintaining the strength of the shaft portion high. The gear portion can be easily formed and the entire weight can be reduced.

  A spinning reel according to an embodiment of the present invention has a handle 1 as shown in FIGS. 1 to 3, and a reel body 2 to be mounted on a fishing rod and a front portion of the reel body 2 that is rotatably mounted. The rotor 3 is mainly provided with a spool 4 that is arranged in the front part of the rotor 3 and moves back and forth. The spinning reel also includes a rotor drive mechanism 5 that rotates the rotor 3 in conjunction with the rotation of the handle 1 and an oscillating mechanism 6 that moves the spool 4 back and forth in conjunction with the rotation of the rotor 3.

  The reel body 2 houses a rotor drive mechanism 5 and an oscillating mechanism 6 therein. As shown in FIGS. 1 to 3, the reel body 2 includes a housing portion 10 that is open on both sides, a first lid portion 11 and a second lid portion 12 that respectively close both sides of the housing portion 10, and a housing portion. 10 and a cover member 14 that covers the housing 10, the first lid 11, and the second lid 12 from the rear.

  The rotor drive mechanism 5 includes a master gear 7 to which the handle shaft portion 1 a of the handle 1 is screwed and fixed, and a pinion gear 9 that meshes with the master gear 7.

  As shown in FIGS. 2 and 3, the oscillating mechanism 6 includes a speed reduction mechanism 20 that meshes with the pinion gear 9, a screw shaft 21 that rotates in conjunction with the speed reduction mechanism 20, and a front and rear engagement with the screw shaft 21. It has a slider 22 that reciprocates, and two guide shafts 23 a and 23 b that guide the slider 22 in the direction of the spool shaft 16.

As shown in an enlarged view in FIG. 4, the master gear 7 includes a shaft portion 7 a into which the handle shaft portion 1 a is screwed, and a gear portion 7 b that is insert-molded by die casting and meshed with the pinion gear 9. .

  As shown in FIG. 2, the shaft portion 7a includes bearings 15a and 15b mounted on first and second boss portions (not shown) formed on the first lid portion 11 and the second lid portion 12 of the reel body 2, respectively. This is a cylindrical member that is rotatably mounted on the reel body 2. The shaft portion 7a is formed by cutting an Al—Cu based aluminum alloy such as A2011 (free-cutting alloy) or A2017 (duralumin alloy). In addition, female screw portions 7d and 7e into which the handle shaft portion 1a can be screwed are formed on the inner peripheral portions of both ends of the shaft portion 7a. The female screw portions 7d and 7e are screws that are tightened when the handle 1 is rotated in the yarn winding direction. Accordingly, the female screw portion 7d on the left side of FIG. 2 is a left-hand screw, and the female screw portion 7e on the right side is a right-hand screw. The handle 1 can be attached to both ends of the shaft portion 7a at the left position shown in FIGS. 1 and 3 and the right position shown in FIG. However, since the screw directions of the female screw portions 7d and 7e are different, dedicated ones are prepared when the handle shaft portion 1a is attached to the left and right. FIG. 2 shows a handle shaft portion 1a for the left handle.

As shown in FIG. 4, the gear portion 7 b is a disk-like member in which the shaft portion 7 a is insert-molded by die casting on the inner periphery of the bearings 15 a and 15 b of the shaft portion 7 a, and has a tooth portion that meshes with the pinion gear 9. Face gear. The gear portion 7b is formed by inserting the shaft portion 7a and die casting by pouring a molten aluminum alloy such as 12 types (ADC12) and 10 types (ADC10) into a mold. As shown in FIG. 4, a projection 7c protruding outward is formed on the outer periphery of the shaft portion 7a where the gear portion 7b is formed, and the gear portion 7b becomes a shaft portion by the projection 7c. 7a is restricted from rotating and moving in the axial direction.

  The shaft portion 7a and the gear portion 7b (hereinafter collectively referred to as a component main body 90) constituting the master gear 7 are both made of an aluminum alloy, and are integrally formed on the surface of the component main body 90 after insert molding. Anodized. An alumite 91 is formed on the surface of the aluminum alloy component main body 90 by anodizing as shown in FIG. The alumite 91 is formed by anodizing an aluminum alloy. When electrolysis is performed in a solution such as sulfuric acid using the component body 90 as an anode, a film is formed due to oxygen generated at the anode.

  A master gear manufacturing process for manufacturing such a master gear 7 is shown in FIG.

  First, in step S1 of FIG. 6, a rod-shaped base material made of an aluminum alloy is prepared. Next, in step S2, a rod-shaped member made of an aluminum alloy is cut using an NC lathe or the like to form a cylindrical shaft portion 7a. Then, by further cutting, the protrusion 7c, the female screw portions 7d and 7e, and the like are formed. Next, in step S3, the shaft portion 7a is inserted into the mold, and in step S4, an aluminum alloy is poured into the mold and the gear portion 7b is die-cast. Next, in step S5, an excessive portion such as a pouring gate portion of the mold is removed, and a finishing process such as polishing is performed. In step S6, the surfaces of the shaft portion 7a and the gear portion 7b are integrally anodized.

  The pinion gear 9 is a hollow cylindrical member, and the front portion penetrates the rotor 3 and is mounted so as not to rotate. A spool shaft 16 is disposed through the inner peripheral portion of the pinion gear 9. A nut 17 is attached to the front portion of the pinion gear 9, and the rotor 3 is fixed to the pinion gear 9 by the nut 17. The pinion gear 9 is rotatably supported by the housing portion 10 of the reel body 2 at its axial intermediate portion and rear end portion by bearings (not shown).

  The rotor 3 is a so-called baleless type in which the fishing line guide portion is mounted only on one rotor arm. As shown in FIG. 3, the rotor 3 includes a rotor body 30 that is rotatably attached to the reel body 2 via a pinion gear 9, and a fishing line guide portion 31 that is swingably attached to the rotor body 30. is doing.

  The rotor body 30 is made of, for example, a magnesium alloy having an anodized film formed on the surface thereof, and is spaced from the support portion 32 from a position where the cylindrical support portion 32 and the outer peripheral surface of the rear end portion of the support portion 32 face each other. And a first rotor arm 33 and a second rotor arm 34 respectively extending forward.

  The fishing line guide portion 31 includes a support member 41 attached to the distal end of the first rotor arm 33, a fixed shaft 42 whose base end is fixed to the distal end of the support member 41, and a fishing line that is rotatably attached to the fixed shaft 42. It has a guideable line roller 43, a fixed shaft cover 44 provided at the tip of the fixed shaft 42, and a fishing line locking portion 45 provided at the tip of the fixed shaft cover 44 for locking the fishing line.

  The support portion 32 is a substantially cylindrical member that is formed in a cylindrical shape after being reduced in taper from the rear end toward the front. A front wall 32a is formed at the front portion of the support portion 32, and a boss portion 32b through which the front portion of the pinion gear 9 passes is formed at the center portion of the front wall 32a. The boss portion 32b is attached to the front portion of the pinion gear 9 so as not to rotate. A nut 17 is screwed into a front portion of the front wall 32 a and a front portion of the pinion gear 9, and the rotor 3 is fixed to the pinion gear 9 by the nut 17. In addition, a cylindrical thread biting prevention member 35 for preventing the fishing line from being wound around the spool shaft 16 is attached to the front part of the support part 32.

  At the tip of the first rotor arm 33, a fishing line guide portion 31 is mounted so as to be swingable between a line winding position and a line releasing position. An interlocking mechanism 40 that operates in conjunction with the swing of the fishing line guide portion 31 is mounted inside the first rotor arm 33. A radially outer peripheral side of the first rotor arm 33 is covered with a first cover member 36.

  The second rotor arm 34 extends forward similarly to the first rotor arm 33, and the outer peripheral side in the radial direction is covered with a second cover member 37. The second rotor arm 34 is provided to balance the rotation of the rotor 3.

  As shown in FIG. 3, the rotation of the rotor 3 can be prohibited / released by the reverse rotation prevention mechanism 50 in the yarn feeding direction. The reverse rotation prevention mechanism 50 includes a roller-type one-way clutch 51 attached to the housing unit 10. The one-way clutch 51 can be switched between a reverse rotation prohibited state and a reverse rotation enabled state. The reverse rotation prevention mechanism 50 further includes a switching operation unit 52 that switches the one-way clutch 51 between a reverse rotation prohibited state and a reverse rotation possible state.

  The spool 4 can be mounted on the spool shaft 16 at a plurality of rotational phases, and the hanging length of the device can be changed. As shown in FIG. 3, the spool 4 is of a shallow groove shape, and is formed to have a larger diameter than the bobbin trunk 4a at the rear end of the bobbin trunk 4a and the bobbin trunk 4a around which the fishing line is wound. A cylindrical skirt portion 4b, and a front flange portion 4c formed at a distal end portion of the bobbin trunk 4a with a slightly larger diameter than the bobbin trunk 4a.

  Next, the operation of the spinning reel will be described.

  In the description of the operation, the case of casting with the right hand will be described. In casting, the hanging length of the device is adjusted by setting the fishing line guide 31 to the line winding posture and hooking the fishing line on the fishing line guide 31.

  First, the handle 1 is rotated in the line winding direction so that the fishing line guide 31 is in a predetermined rotational phase in a state where the spool 4 is disposed near the tip of the stroke. Specifically, considering the ease of operation of the fishing line guide 31 and the ease of picking the fishing line, for example, when casting with the right hand, if the fishing line guide 31 is arranged on the left side of the spool 4 when viewed from the fishing rod side, the fishing line guide It is easy to operate the unit 31 with the left hand. In this state, the fixed shaft cover 44 of the fishing line guide part 31 is pinched with the fingertip of the left hand (the reverse hand of the hand holding the fishing rod) to swing the fishing line guide part 31 to the line releasing posture. Then, the fishing line wound around the spool 4 is picked with the left hand and the fishing rod is hooked with the index finger of the right hand for casting.

  When casting is finished, the fishing line guide part 31 is returned from the line releasing position to the line winding position with the left hand, and the fishing line is pinched with the left hand and locked to the fishing line locking part 45 of the fishing line guide part 31. The fishing line locked by the fishing line locking part 45 is guided to the line roller 43 through the fixed shaft cover 44. In this state, the handle 1 is slightly rotated in the line winding direction to place the fishing line slightly under tension.

  When a prey is applied to the device and the handle 1 is turned, the rotor 3 rotates in the yarn winding direction and the spool 4 moves back and forth. At the same time, the rotation of the handle 1 is transmitted to the master gear 7 via the shaft portion 7 a, and the rotor 3 rotates via the pinion gear 9. Further, the oscillating mechanism 6 is operated from the pinion gear 9 via the speed reduction mechanism 20, and the spool 4 moves back and forth.

In the master gear 7, the shaft portion 7a and the gear portion 7b are made of an aluminum alloy, and the gear portion 7b is die-cast and the shaft portion 7a is insert-molded. Here, since the shaft portion 7a and the gear portion 7b are formed of an aluminum alloy which is a light alloy, the overall weight can be reduced. Further, since the female threaded portions 7d and 7e are cut before the shaft portion 7a is insert-molded into the gear portion 7b, the female threaded portions 7d and 7e are not easily crushed, and therefore the strength of the shaft portion 7a is maintained high. Can do. Furthermore, since the gear portion 7b is die-cast and the shaft portion 7a is insert-molded, the gear portion 7b can be easily formed.

[Other Embodiments]
(A) In the above embodiment, the bale-less spinning reel is used. However, a spinning reel having a bail between the first rotor arm and the second rotor arm may be used. Further, the spinning reel of the embodiment has been described by taking the front drag type spinning reel as an example, but the present invention can be applied to all types of spinning reels such as a rear drag type spinning reel and a lever brake type spinning reel.

  (B) In the above-described embodiment, the shaft portion 7a and the gear portion 7b are formed of different aluminum alloys, but may be formed of the same aluminum alloy. In addition, the kind of aluminum alloy is not limited to the thing of the said embodiment.

(C) In the above-described embodiment, the shaft portion 7a and the gear portion 7b are integrally anodized after insert molding. However , after the anodizing treatment is performed, other surface treatment or coating treatment is performed. It may be.

The side view of the spinning reel which employ | adopted one Embodiment of this invention. FIG. 3 is a rear sectional view of the spinning reel. Side surface sectional drawing of the said spinning reel. Sectional drawing of a master gear. The expanded cross-sectional schematic diagram of the said master gear. The flowchart which shows the manufacturing process of the said master gear.

1 Handle 1a Handle shaft 2 Reel body 3 Rotor 4 Spool 7 Master gear 7a Shaft 7b Gear 7c Projection 9 Pinion gear 90 Parts body 91 Anodized

Claims (5)

A spinning reel master gear that is rotatably supported by the reel body and transmits the rotation of the screw-type handle to the rotor via a pinion gear,
A shaft portion that has a female screw into which the handle is screwed at an end portion, is rotatably provided on the reel body, and is formed by cutting aluminum alloy;
The shaft part is insert-molded by die casting of an aluminum alloy, and includes a gear part meshing with the pinion gear ,
The spinning reel master gear , wherein the shaft portion and the gear portion are integrally anodized after insert molding . The spinning reel master gear according to claim 1 , wherein the shaft portion and the gear portion are formed of aluminum alloys of different materials. The spinning reel master gear according to claim 1 or 2 , wherein the shaft portion is a cylindrical member on which an inner periphery of the handle is non-rotatably mounted. The spinning reel master gear according to any one of claims 1 to 3 , wherein the shaft portion has internal threads formed at both ends thereof. 5. The spinning reel master gear according to claim 1, wherein the shaft portion is formed with a protrusion on the outer peripheral portion for preventing the gear portion from rotating. 6.

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