JP3493286B2 - Guide member for fishing line - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guide member attached to a fishing rod and used to guide a fishing line, and particularly to a fishing line guide member having excellent wear resistance and high sliding property (low friction coefficient). Regarding

[0002]

2. Description of the Related Art In recent years, fishing using reels such as throwing fishing and lure fishing has been widely performed. In this case, a plurality of ring-shaped guide members made of metal or resin are attached to the fishing rod, and the guide members guide the fishing line.

Further, the above guide member has excellent wear resistance even when it violently slides on the fishing line, does not cause rust even when used in the sea or river, and is damaged by collision with rocks. It is difficult to do this, and it is also required to have high decorativeness.

Therefore, a ceramic fishing line guide member is used particularly from the viewpoint of wear resistance to the fishing line.

As a concrete material for the fishing line guide member, steatite or general alumina ceramics is used. In addition, zirconia ceramics having a decorative property such as luster and, in recent years, silicon carbide ceramics having high hardness and high thermal conductivity are also used (JP-A-61).
No. 177921, Japanese Patent Publication No. 63-41532, etc.).

Since these ceramic guide members have excellent wear resistance and are free from rust, they can be used satisfactorily for a long period of time.

[0007]

However, none of the above ceramic fishing line guide members satisfies all the requirements.

For example, a guide member made of steatite is
Since the hardness was low and the wear was remarkable, yarn breakage was likely to occur. Also, the guide member made of alumina ceramics
Since the mechanical strength is low, it is easily broken, and it is difficult to obtain a glossy surface for giving a high-grade feeling.

Further, the guide member made of zirconia ceramics has a low hardness, and silica (SiO,
Since it is equivalent to SiO ₂ ), abrasion scratches are likely to occur during use in the sea or river. Further, since the sliding characteristics are poor (the coefficient of friction with the thread is high), there is a problem that the fishing line is damaged and the thread is easily broken.

On the other hand, since the guide member made of silicon carbide ceramics lacks chemical stability, there is a problem that it is easily worn when used for a long period of time due to a tribochemical influence that changes from the surface layer to silica or the like. It was

Therefore, an object of the present invention is to obtain a guide member which is excellent in wear resistance and slidability and which is less likely to damage the fishing line.

[0012]

Therefore, the present invention is directed to ZrO.
₂ (zirconia) and / or ZrSiO ₄ (zircon)
3.0 to 45.0% by weight, SiO ₂ (silica) and /
Alternatively, the fishing line guide member is formed of 0.3 to 5.0% by weight of MgO (magnesia) and the balance being ceramics containing Al ₂ O ₃ (alumina) and unavoidable impurities.

That is, the ceramic forming the fishing line guide member of the present invention contains alumina as a main component,
The original high corrosion resistance and high wear resistance characteristics of alumina can be maintained, and the interparticle bond strength can be strengthened by adding a small amount of silica and / or magnesia to cause a solid phase reaction. In addition, by including zirconia and / or zircon, the phase change of these grains causes the grain size to be adjusted and the partial grain expansion between grains to exert a compression effect, thereby improving the wear resistance and strength of the ceramics and providing a luster. The surface can be obtained and the decorative property can be improved.

That is, the above-mentioned silica and magnesia have a function of easily reacting with alumina molecules in a sintered body in a solid phase to reduce the bond distance between particles and increase the bonding force to improve the wear resistance. is there. Further, the contents of these components are set to 0.
The content of 3 to 5.0% by weight means that the sinterability is deteriorated when the content is less than 0.3% by weight, while the saturation state occurs when the content is more than 5.0% by weight and the single molecule which cannot undergo the solid phase reaction is worn. The reason is that the grain boundary is peeled off, which causes significant wear.

Further, zirconia and zircon enhance the wear resistance and strength of the sintered body by the compression effect due to the volume expansion accompanying the phase transformation of the crystal, and constitute fine crystal particles having a small particle size as described later, It acts to reduce the coefficient of friction with respect to the fishing line. Furthermore, by containing these components, the surface of the sintered body can be made glossy and the decorativeness can be improved. The content of these components is set to 3.0 to 45.
The content of 0% by weight is not less than 3.0% by weight, not only the sinterability is deteriorated, but also gloss is not obtained, while 45.
This is because if the amount exceeds 0% by weight, the hardness decreases.

Further, in the present invention, the ceramic constituting the above-mentioned fishing line guide member is composed mainly of ZrO ₂ (zirconia) and / or ZrSiO ₄ (zircon) and has an average diameter of 0.5.
And fine crystal grains of ～1.5Myuemu, becomes Al ₂ O ₃ a (alumina) from coarse crystal grains having an average diameter of 3~10μm mainly, wherein the average crystal grain size of the whole is 7μm or less.

That is, the zirconia and / or zircon contained in the ceramic forming the fishing line guide member of the present invention constitutes fine crystal particles having a relatively small average diameter of 0.5 to 1.5 μm, while alumina has an average diameter. Has a relatively large coarse crystal grain size of 3 to 10 μm, and when both are mixed, the surface thereof has an appropriate uneven shape, whereby the coefficient of friction with respect to the fishing line can be lowered, and damage to the fishing line can be reduced.

Further, the reason why the average crystal grain size of the whole is set to 7 μm or less is that when it exceeds 7 μm, the coefficient of friction with respect to the fishing line becomes high.

The fine crystal grains and the coarse crystal grains here appear to be whitish as the fine crystal grains mainly composed of ZrO ₂ and / or ZrSiO ₄ are observed in an enlarged photograph of the surface of the sintered body by a metal microscope or an electron microscope. , Coarse crystal grains mainly composed of Al ₂ O ₃ can be distinguished from each other because they appear blackish, and the average diameter may be obtained by the cutting method of JIS H0501. The average crystal grain size of the whole is determined by the cutting method of JIS H0501 for all the crystals.

Further, according to the present invention, the ceramic forming the above-mentioned fishing line guide member uses Fe, Mn, and C as colorants.
o, one or more metal oxides such as Cr 5.0 to 25.
It is characterized by containing 0% by weight.

That is, by containing these colorants, it is possible to color them in a predetermined color tone and further improve the decorative property.

In addition to the above-mentioned components, the ceramics forming the fishing line guide member of the present invention contain Na ₂ O ₃ , Fe ₂ O ₃ , K and the like in total of 0.2% by weight as inevitable impurities.
It may be included in the following range.

Next, a method of manufacturing the ceramics forming the fishing line guide member of the present invention will be described. First, an alumina powder having an average particle size of 3 μm or less is prepared in order to improve sinterability. On the other hand, zirconia having an average particle size of 0.5 μm or less and /
Or 3.0-45.0% by weight of zircon powder in total
And silica and / or magnesia powder in total 0.3
Add and blend so as to be up to 5.0% by weight and mix.

If necessary, Fe, Mn, Co,
A total of 5.0 to 2 using an oxide of a metal such as Cr as a colorant
Add in the range of 5.0% by weight.

Paraffin wax is added to the raw material powder in an amount of 2 to 4% by weight and granulated, which is then powder-molded by a known method and then fired at 1300 to 1600 ° C. in the atmosphere. The fishing line guide member can be obtained by subjecting the thus obtained sintered body to processing as required.

[0026]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

The fishing line guide member 10 shown in FIG. 1 is a ring-shaped body, and the inner peripheral surface thereof is a smooth curved guide surface 11.
Has become. The guide member 10 is attached to a fishing rod (not shown) with its periphery held by a holding member (not shown), and the guide line 11 can guide the fishing line 22.

The guide member 10 is made of ZrO.
₂ (zirconia) and / or ZrSiO ₄ (zircon)
3.0 to 45.0% by weight, SiO ₂ (silica) and /
Alternatively, it is formed of 0.3 to 5.0% by weight of MgO (magnesia) and the balance being ceramics composed of Al ₂ O ₃ (alumina) and unavoidable impurities.

Further, the above ceramic is ZrO 2.
₂ (zirconia) and / or ZrSiO ₄ (zircon)
With a mean diameter of 0.5 to 1.5 μm and a mean diameter of 3 to 1 mainly consisting of Al ₂ O ₃ (alumina)
It consists of coarse crystal grains of 0 μm, and the average crystal grain size of the whole is 7 μm or less.

Since the ceramics forming the guide member 10 contains alumina, which is originally excellent in wear resistance, as a main component and contains the above-mentioned components, the wear resistance can be further improved. Even if it is not easily worn, it can be used satisfactorily for a long period of time. Further, since this ceramic has excellent corrosion resistance, it does not cause rust or change in quality even when used in the sea or river. Further, the strength can be improved by including the zirconia and / or zircon component, and the risk of damage even when the rock or the like is collided can be prevented.

Further, the ceramics forming the guide member 10 is composed of fine crystal grains having a small grain size and coarse crystal grains having a large grain size, and when both are mixed, the surface has an appropriate uneven shape, whereby the fishing line is formed. It is possible to reduce the coefficient of friction with respect to 22 and prevent damage to the fishing line 22 to improve slidability.

Furthermore, this ceramic has a lustre on the surface by containing a zirconia and / or zircon component, and can enhance decorativeness.

Further, the ceramics forming the guide member 10 of the present invention has a total amount of 5.0 to 25.0% by weight using oxides of metals such as Fe, Mn, Co and Cr as colorants, if necessary. Can also be added. By adding these, a predetermined color tone can be obtained and the decorativeness can be further improved.

The fishing line guide member of the present invention is shown in FIG.
The shape is not limited to the shape shown in FIG.

[0035]

Example Alumina powder and other additive powders were mixed in various ratios and mixed and ground for 15 hours. After drying this, 4% by weight of paraffin wax was added, and 1.
What was pressure-molded at a pressure of 0 ton / cm ² was fired in an air atmosphere at 1500 ° C. for 1 hour to obtain a sintered body.

This sintered body was crushed, and all the values obtained by quantitative analysis by ICP (emission spectroscopy quantitative analysis device) and fluorescent X-ray diffraction were converted into oxides to obtain a sintered body composition.
In addition, after the surface of the obtained sintered body was mirror-polished, JIS
Vickers hardness was measured by the test method of Z2244.

Next, from the electron micrograph of the surface of the sintered body,
The average diameter of the fine crystal particles distinguished by the color tone of the crystal and the average diameter of the whole crystal particles were measured by the cutting method of JIS H0501.

A cylindrical sample having a diameter of 5 mm was prepared from the same raw material to measure the friction coefficient, and a ring-shaped guide member 10 shown in FIG. 1 was prepared to evaluate wear resistance.

The friction coefficient was measured as shown in FIG.
A 6-pound fishing line 22 was slid on the side surface of the cylindrical sample 21 at a contact angle θ of 90 ° and a line speed of 100 m / min, and the tension T ₁ on the input side was set to 20 gf and the tension T on the output side was set.
₂ was measured, and the friction coefficient μ was determined by the Amonton's law formula μ = ln (T ₂ / T ₁ ) / θ ₂ .

Further, as shown in FIG. 3, the wear resistance was evaluated by using No. 3 30 lb fishing line 22 and 500 g weight 2.
A load is applied at 3, and the test piece is slid on the guide member 10 at a yarn speed of 60 m / min while passing through a container 24 in which 1 liter of water and 100 g of sea sand are mixed, and a test is conducted until the sliding distance becomes 2000 mm. It was After that, the sliding surface 11 of the guide member 10 was observed with a binocular microscope of about 20 times for the presence or absence of wear traces, and the depth thereof was measured.

Further, as an evaluation of glossiness, the surface of the above sample after being subjected to fluid polishing for 1 hour had a purity of 99.
As compared with the surface of high purity alumina ceramics having a purity of 9% or more, those having gloss were evaluated as ◯, those having the same degree as Δ, and those having inferiority were evaluated as x.

The results are shown in Tables 1 and 2. From this result, the content of zirconia and / or zircon is 3.0.
Those with less than wt% (Nos. 1 and 2) had a high friction coefficient and poor slidability. Further, if the content of zirconia and / or zircon exceeds 45.0% by weight (No. 7) or the content of magnesia exceeds 5.0% by weight (No. 10), the hardness is 1350 kg / m.
It is as low as less than m ² and is insufficient for use as the fishing line guide member 10, resulting in poor wear resistance evaluation.
The average diameter of the crystallite particles exceeded 1.5 μm, the average diameter of the entire crystal particles also exceeded 7 μm, and the friction coefficient was high.

In contrast to these, The samples within the range of 3 to 6, 8 and 9 of the present invention had high wear resistance and low friction coefficient, and showed excellent results.

[0044]

[Table 1]

[0045]

[Table 2]

[0046]

As described above, according to the present invention, ZrO ₂
(Zirconia) and / or ZrSiO ₄ (zircon) is 3.0 to 45.0% by weight, SiO ₂ (silica) and / or MgO (magnesia) is 0.3 to 5.0% by weight, and the balance is Al ₂ O. By forming the fishing line guide member with ceramics composed of ₃ (alumina) and unavoidable impurities, it has excellent wear resistance and corrosion resistance, and since it has excellent slidability with the fishing line, it does not damage the fishing line for a long time. It is possible to obtain a fishing line guide member which can be favorably used and which has gloss and is excellent in decorativeness.

[Brief description of drawings]

FIG. 1 is a perspective view showing a fishing line guide member of the present invention.

FIG. 2 is a diagram for explaining a method of measuring a friction coefficient.

FIG. 3 is a diagram for explaining a test method for evaluation of wear resistance of a fishing line guide member.

[Explanation of symbols]

10: Guide member 11: Information surface 21: Sample 22: Fishing line

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) A01K 87/00-87/06 C04B 35/10

Claims (2)

(57) [Claims] 1. ZrO ₂ and / or ZrSiO ₄ is 3.0.
～45.0 wt%, SiO ₂ and / or MgO 0.3
˜5.0 wt%, the balance being made of ceramics consisting of Al ₂ O ₃ and unavoidable impurities , and ZrO ₂ and / or
Is an average diameter of ZrSiO ₄ of 0.5 to 1.5 μm
Fine crystal particles and an average diameter mainly composed of Al ₂ O ₃ of 3 to
An average crystal grain consisting of coarse crystal grains of 10 μm
A fishing line guide member having a diameter of 7 μm or less . 2. The ceramics as a coloring agent, F
5. The composition contains 5.0 to 25.0% by weight of one or more oxides of metals such as e, Mn, Co and Cr.
The fishing line guide member described.