JP2002223674A - Fishing reel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fishing reel improved in the abrasion resistance of various gears used in the winding driving mechanism, thus hard to decline in rotating performance. SOLUTION: This fishing reel has a winding driving mechanism mounted with gears 40 for power transmission and is characterized by that a hardened layer 41 is formed on the surface of the teeth 40a of each of the gears 40.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fishing reel, and more particularly, to a fishing reel characterized by various gears used in a winding drive mechanism.

[0002]

2. Description of the Related Art Generally, a fishing reel has a structure in which a fishing line is wound around a spool by driving a winding drive mechanism incorporated in the reel body by rotating a handle. The winding drive mechanism includes a plurality of gears, and each gear is usually formed by casting zinc, casting or forging an aluminum alloy, casting stainless steel (MIM; metal injection mold), or the like. I have. And
These are molding methods that require a mold,
The mold is created by creating a mold electrode and subjecting the electrode to electrical discharge machining on mold steel.

[0003] When the gear is formed by a mold as described above, the surface of the teeth becomes slightly uneven, so that the unevenness is usually corrected by applying a lapping process after the formation to obtain a uniform surface.

[0004]

When the tooth surface is formed as described above, a relatively soft material is used in casting or forging, so that gears are liable to be generated during abrasion or high load operation. Has a problem in durability, and as a result, rotation performance is reduced. When the unevenness of the tooth surface is made uniform by the above lapping step, a work hardened layer is formed on the surface, but the layer is thin and quickly worn away, and thus does not have sufficient durability.

[0005] It is also known to form a gear by cutting, but in this case, in many cases, a material having excellent free-cutting properties is used in order to improve the productivity of the gear. However, problems such as a decrease in rotational performance due to the above problem cannot be solved.

Further, in the case of a gear made of aluminum,
It is also known to improve the wear resistance of gears by anodizing the surface and improving the gear's wear resistance.However, due to the absolute lack of strength of the base material, the alumite layer peels off with the base material,
As a result, the rotation performance decreases.

The present invention has been made based on the above-mentioned problem, and aims to improve the wear resistance of various gears used in the winding drive mechanism, and the rotation performance is not easily reduced.
An object of the present invention is to provide a fishing reel.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a fishing reel according to the present invention has a winding drive mechanism having a gear for transmitting power. A cured layer is formed on the surface of the part.

As described above, by forming the hardened layer on the tooth surface of the gear, even if a load is applied to the tooth surface during power transmission, the wear and seizure thereof are effectively suppressed, and the rotation is prevented. Performance degradation is prevented.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A fishing reel according to an embodiment of the present invention will be described below. In this embodiment, a spinning reel is taken as a fishing reel,
As a gear in the winding drive mechanism, a face gear provided on a handle shaft will be illustrated and described.

FIG. 1 is a partial sectional view of a spinning reel having a take-up drive mechanism provided with the above-described face gear, as viewed from the rear.

First, the configuration and operation of the spinning reel will be described. A spinning reel 1 is a reel body 2 having legs 2a for mounting on a fishing rod.
And a rotor 3 rotatably arranged in front of the reel body;
And a spool (not shown) arranged to be able to move back and forth in synchronization with the rotational movement of the rotor 3.

A handle shaft 5 is rotatably supported in the reel body 2 via a bearing 4, and a handle 7 is attached to a protruding end thereof. A take-up drive mechanism is engaged with the handle shaft 5, and the take-up drive mechanism includes a face gear 10 attached to the handle shaft 5.
And a pinion 12 that meshes with the face gear 10, extends in a direction perpendicular to the handle shaft 5, and has a cavity formed therein that extends in the axial direction.

The pinion 12 is rotatably supported in a reel body via a bearing so as to be orthogonal to the handle shaft 5 in an offset state. A spool shaft 15 extending in a direction perpendicular to the handle shaft 5 and having a spool attached to the distal end side is formed in the hollow portion of the pinion 12.
Are movably inserted in the axial direction.

The pinion 12 is engaged with an oscillating mechanism constituting a part of a winding drive mechanism for moving the spool shaft back and forth. The oscillating mechanism includes a worm shaft 17 rotatably supported in the reel body and extending parallel to the spool shaft 15, and a gear 18 attached to one end of the worm shaft 17 and meshing with the pinion 12. Have. A slider (not shown) that engages with the spiral groove of the worm shaft 17 is attached to the other end of the spool shaft 15, and the worm shaft 17 is driven to rotate by the gear 18. The spool shaft 15 is reciprocated in the front-rear direction via a slider.

With the above-described structure, when the handle 7 is wound, the rotor 3 is driven to rotate via the winding drive mechanism, and the spool is moved back and forth via the oscillating mechanism. 3 is wound uniformly around the spool via the fishing line guide 3a.

Next, the configuration of the face gear 10 in the above-described winding drive mechanism will be described in detail.

As described above, the present invention is characterized in that a hardened layer is formed on the surface of the gear tooth portion. In the present embodiment, the teeth of the face gear 10 are cut to form a plurality of steps (these steps are preferably formed continuously and with a predetermined direction). ), And by crushing the step, a hardened layer thicker than the conventional work hardened layer is formed, thereby improving the strength of the tooth surface, and improving the wear resistance and durability. In other words, by continuously forming a plurality of directional steps, the area to be crushed can be increased without changing the shape of the tooth surface, and accordingly, the flat portion and the uneven surface can be reduced. A thicker work hardened layer can be formed as compared with the case of crushing.

Specifically, the steps formed continuously in this manner have a pitch of about 5 to 50 μm and a depth of 1 to 5 μm.
It is preferable to form it so as to be about μm. That is, if the pitch or depth is smaller than the lower limit described above,
If a sufficient cured layer cannot be obtained, and if it is larger than the above upper limit, it takes time and effort to perform the crushing step, and it is difficult to sufficiently crush the layer.

In the present embodiment, the portion of the face gear where the teeth are formed has a surface shape, and can be cut by an NC milling machine. According to the cutting by a tool of the NC milling machine, Attention is paid to the fact that it is possible to easily form a continuous step with directionality during processing, and the teeth are formed as shown in FIG.

That is, first, a structure 30 as shown in FIG. 2 is prepared by casting, forging, cutting, or the like. In this case, the structure 30 includes a disc 31 and a disc 3
And a shaft portion 32 extending orthogonally at the center of the disc 1, and a ring-shaped projection 31 a is formed at an edge of the disk portion 31. Then, the flat surface 31b of the protrusion is
Tooth part 3 by cutting with the tool of C milling machine
1c is formed, and the face gear 10 is created. The shaft portion 32 becomes the handle shaft 5 as it is.

In the above-described structure 30, a substantially back portion of the protruding portion 31a is placed on a work table of an NC milling machine, and an end mill 50, which is a type of tool, is placed on the flat surface 31b by XYZ.
The tooth portion 31c is formed by the drive control in the direction.
To the numerical controller connected to the NC milling machine, the tooth profile for the face gear analyzed in advance is input, and the tooth portion 31c is cut based on the input information.

In this case, the step structure formed on the surface of the tooth portion can be variously deformed by the cutting blade structure (flat end mill, ball end mill, etc.) attached to the end mill 50 and the drive control method of the end mill 50. Become.

For example, FIG. 3 shows an example in which the tooth end 31c is formed by controlling the driving of the flat end mill along the direction of the tooth trace indicated by the arrow and by controlling the driving in the vertical direction for each stroke. . According to such drive control, the tooth portion can be easily formed, and a continuous step-like step 35a having directionality along the tooth trace direction indicated by the arrow is formed on the surface thereof. FIG. 4 shows an example in which the tooth portion 31c is formed using a ball end mill in the same drive control method. In this case, a continuous arc-shaped step 35b having a direction is formed along the tooth trace direction indicated by the arrow on the surface of the tooth portion.

After the step is formed as described above, the surface is crushed by lapping or the like as shown in FIG. 5 to form a work hardened layer on the surface. In this case, cutting by the flat end mill shown in FIG.
Since the area to be crushed (plane area) can be increased as compared with the cutting by the ball end mill shown in FIG. 4, the work hardened layer (the part shown by the dotted line in FIGS. 3 and 4) formed when crushed is thickened. And is preferable in terms of durability. Conversely, according to the cutting by the ball end mill, the accuracy of the tooth portion 31c can be improved.

Further, since such a face gear can be formed by cutting with an NC milling machine, it is possible to use a material having high strength and abrasion resistance, thereby improving the strength and improving the tooth surface. The wear resistance can be improved, and the durability as a gear can be further improved. Various materials such as aluminum, brass (copper-based alloy), zinc, SUS, and steel (iron-based alloy) can be used as the material of the face gear.
In the case of a fishing spinning reel, since the rotation speed of the pinion gear meshing with the spinning reel is high, the spinning reel is stronger than the material used for the pinion gear (for example, aluminum, brass (copper alloy), SUS, steel (iron alloy), etc.). Is preferably used. In addition, by using a high-strength material for the face gear, it is possible to increase the number of teeth and reduce the size of the module (m ≦ 0.6), thereby increasing the meshing ratio and obtaining smooth rotation characteristics. At the same time, the size of the reel body can be reduced.

FIGS. 6 to 10 show various constitution examples in which the drive control method of the end mill is variously changed to change the directionality of the step formed on the surface together with the tooth portion.

FIG. 6 shows an example in which a continuous step-like step 35c is formed by a flat end mill along a direction perpendicular to the tooth contact direction (direction indicated by an arrow) of the pinion gear meshing with the face gear. Figure 7
Shows an example in which a continuous arc-shaped step 35d is similarly formed by a ball end mill.

After such a step is formed,
The surface is crushed by lapping or the like as shown in FIG. 8 to form a work hardened layer on the surface. in this case,
Similar to the configuration described above, cutting by the flat end mill shown in FIG. 6 can increase the area to be crushed more than cutting by the ball end mill shown in FIG. The thickness can be increased, which is preferable in terms of durability.

FIG. 9 (a) shows an example in which a continuous arc-shaped step 35e is formed by a ball end mill along a direction orthogonal to the tooth trace direction (the direction indicated by the arrow). (B) shows a state in which a work hardened layer is formed on the surface by crushing the surface by lapping or the like. FIG. 10A shows an example in which a continuous arc-shaped step 35f is formed by a ball end mill along a tooth contact direction (direction indicated by an arrow) of a pinion gear meshing with a face gear. (B)
This shows a state in which a work hardened layer is formed on the surface by crushing the surface by lapping or the like.

As described above, the direction of the step formed continuously on the tooth surface can be variously changed.
As shown in FIG. 10, if the pinion gear is formed along the contact direction of the pinion gear, the pinion gear moves slidably in this direction. Therefore, by forming a hardened layer along this direction, the load on the tooth surface is minimized. And is most preferable in terms of durability and abrasion resistance.

In the above embodiment, the face gear of the spinning reel is exemplified as the gear, and the hardened layer formed on the surface of the tooth portion is exemplified by a plane processing by lapping or the like. , Spur gears, rack and pinion incorporated in various fishing reels,
It can be applied to an internal gear or the like, and can be formed by a chemical surface treatment or a physical surface treatment as a means for forming a hardened layer.

For example, as shown in FIG. 11, the surface of the tooth portion 40a of the gear 40 is subjected to a chemical hardening treatment such as nitriding, carburizing, etc. The cured layer 41 may be formed by performing a treatment or a physical surface treatment such as sputtering, ion plating, induction hardening, and shot peening.

Even if the hardened layer 41 is formed by such a chemical or physical surface treatment means, the wear resistance of the teeth 40a is improved, and it is possible to prevent the rotation performance from being lowered.

[0035]

According to the present invention, it is possible to improve the wear resistance of various gears used in the winding drive mechanism, and to obtain a fishing reel whose rotation performance is hardly reduced.

[Brief description of the drawings]

FIG. 1 shows an example of a fishing reel according to the present invention, and is a partial cross-sectional view of a spinning reel as viewed from the rear.

FIG. 2 is a diagram showing a method of manufacturing a face gear used for the spinning reel shown in FIG.

FIG. 3 is an enlarged view showing a tooth portion of the face gear;
The figure which shows the 1st example of a structure of several steps formed in a tooth part.

FIG. 4 is an enlarged view showing a tooth portion of the face gear;
The figure which shows the 2nd example of a structure of several steps formed in a tooth part.

FIG. 5 is a diagram showing a state in which the steps shown in FIGS. 3 and 4 have been wrapped.

FIG. 6 is an enlarged view showing a tooth portion of the face gear;
The figure which shows the 3rd example of a structure of several steps formed in a tooth part.

FIG. 7 is an enlarged view showing a tooth portion of the face gear;
The figure showing the 4th example of composition of a plurality of steps formed in a tooth part.

FIG. 8 is a diagram showing a state in which the steps shown in FIGS. 6 and 7 are wrapped.

9A is an enlarged view of a tooth portion of the face gear, showing a fifth configuration example of a plurality of steps formed in the tooth portion. FIG. The figure which shows the state which carried out the lapping process of the shown step.

10A is an enlarged view of a tooth portion of the face gear, and is a diagram showing a sixth configuration example of a plurality of steps formed in the tooth portion. FIG. The figure which shows the state which carried out the lapping process of the shown step.

FIG. 11 is a diagram showing a state in which a hardened layer is formed on a tooth surface of a gear used for a fishing reel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Spinning reel 10 Face gear 31c Teeth 35a-35f Step 40 Gear 40a Teeth 41 Hardened layer 50 End mill

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) F16H 55/22 F16H 55/22 (72) Inventor Koji Kikuchi 3-14-16 Maesawa, Higashikurume-shi, Tokyo Within Daiwa Seiko Co., Ltd. (72) Inventor Wataru Tsutsumi 3-14-16 Maesawa, Higashi-Kurume-shi, Tokyo F-term within Daiwa Seiko Co., Ltd. (Reference) 2B108 BE04 CC01 EC01 FA03 GA10 3J009 DA16 EA06 EA15 EA23 EA32 EB08 FA30 3J030 AC10 BA01 BA02 BA08 BA10 BC03 BC06 BC07 BC10 CA10

Claims (4)

[Claims] 1. A fishing reel having a winding drive mechanism having a gear for transmitting power, wherein a hardened layer is formed on a tooth surface of the gear. 2. The fishing reel according to claim 1, wherein the hardened layer is formed by forming a plurality of steps on the surface of the tooth portion and then crushing the steps. 3. The fishing reel according to claim 1, wherein the hardened layer includes a chemically or physically generated surface treatment layer. 4. The fishing reel according to claim 1, wherein the gear is a face gear used for a winding drive mechanism of the fishing reel.