JP2001321031A - Guide material for fishing line and method for producing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem that a fishing line can not be smoothly guided for a long time, as the sliding area between the fishing line and a through hole surface is large. SOLUTION: This fishing line-guiding material 1 is made of a ceramic having a through hole 1a for guiding the fishing line having >=0.1 mm diameter. The material is characterized in that an average size of roughness on the surface of the through hole 1a in the region from the open end of the through hole 1a to at least 1/5 of the whole surface is 50-200 μm.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fishing line guide member mounted on a fishing rod to guide a fishing line.

[0002]

2. Description of the Related Art Conventionally, in fishing using a reel, a fishing rod is provided with a plurality of ring-shaped guide members to guide a fishing line.

Such a conventional guide member has a ring shape having a through hole for guiding a fishing line, and is fixed to a fishing rod by a frame-shaped joint frame. This guide member was generally formed of resin or metal.

[0004] In addition, since the fishing line repeatedly slides on the surface of the through hole of the guide member when fishing, the guide member is required to have excellent wear resistance. Resins made of resin are inferior in abrasion resistance, and therefore have a drawback that they are not used for a long time. In particular, in recent fishing industries, the use of lures has become remarkably widespread. In lure fishing, the number of operations of throwing and rewinding lures has been extremely large, and the above-mentioned drawbacks have been remarkable.

Therefore, in order to solve the above-mentioned drawbacks, the guide member is formed of a zirconia-based sintered body or a silicon carbide-based sintered body having excellent strength and abrasion resistance, and a sliding contact between the fishing line and the surface of the through hole. In order to reduce friction, it has been proposed to reduce the thickness of the guide member so as to reduce the sliding contact area between the fishing line and the surface of the through-hole (Japanese Patent Publication No. 63-4132, Japanese Patent Application Laid-Open No. 5-153887). Gazette).

In addition, a ceramic coating layer is formed on the surface of the through-hole of the guide member, and an uneven portion having an average uneven diameter of 2 to 20 μm is provided on the surface of the ceramic coating layer to reduce the sliding contact area with the yarn. (See Japanese Patent Application Laid-Open No. 7-3549).

[0007]

However, when the thickness of the ceramic guide member made of a zirconia-based sintered body or a silicon carbide-based sintered body is reduced, the sliding contact area with the fishing line is reduced, but the mechanical strength of the guide member is reduced. The target strength becomes extremely weak, and the guide member is damaged when it is pressed into and attached to a frame-shaped joint frame for fixing the guide member to the fishing rod, and the guide member has a defect that it is chipped when used. I was

Further, when a ceramic coating layer having an average unevenness diameter of 2 to 20 μm is provided on the surface of the through hole of the guide member,
The thickness of the thread is 0.01mm (1 denier) or 0.00
When the line is very thin of 001 mm (0.1 denier), the sliding contact area with the fishing line is sufficiently small. However, when the line diameter is 0.1 mm or more, the average uneven diameter of the guide member is too small. The sliding contact area with the fishing line becomes large, and as a result, the fishing line guided into the through hole of the guide member has a drawback of causing damage and fluffing.

In the case where a ceramic coating layer is provided on the surface of the through hole of the guide member, the surface of the base material is adjusted to a predetermined roughness, and the ceramic coating layer is further adjusted on the surface by CVD or PDV. However, there is a drawback in that the application of the ceramic coating layer is troublesome, and the fishing line guide member as a product is expensive.

The present invention has been made in view of the above-mentioned drawbacks, and has as its object to reduce the sliding contact area between the fishing line and the surface of the through-hole, and to provide an inexpensive fishing line excellent in slidability and wear resistance. It is to provide a guide member.

[0011]

The present invention has a diameter of 0.1 m.
A fishing line guide member made of ceramic having a through-hole for guiding a fishing line of m or more, wherein the average unevenness diameter of the surface is 50 to 200 μm in at least a fifth region from the open end of the through-hole. It is characterized by having.

The method of manufacturing a fishing line guide member according to the present invention corresponds to the shape of the fishing line guide member, and is provided in a region at least one-fifth of the entire through hole of the through hole of the fishing line guide member. A molding die having a molding space whose corresponding portion is processed to have an average concavo-convex diameter of 60 to 230 μm is prepared, and a ceramic material is filled in the molding space. The method is characterized in that a ceramic molded body having an average surface irregularity diameter of 60 to 230 μm in a one-half region is obtained, and then the ceramic molded body is fired.

According to the fishing line guide member of the present invention, the average unevenness diameter of the surface in at least one fifth of the entire area from the opening end of the through hole is 50 to 200 μm. When a fishing line of .1 mm or more is guided, the fishing line and the surface of the through hole are in point contact with each other, and the sliding contact area is reduced, so that the fishing line can be smoothly guided for a long time without damage. .

Further, according to the manufacturing method of the present invention, 60 to 2 parts are previously set at predetermined positions of a molding die used for forming a ceramic molded body to be a ceramic fishing line guide member.
Because it had been processed with an average uneven diameter of 30 μm,
By simply firing the ceramic molded body, it is possible to easily and stably produce a fishing line guide member having an average unevenness diameter of 50 to 200 μm on the surface in at least a fifth region from the opening end of the through hole, The fishing line guide member as a product can be made inexpensive with good mass productivity.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is an enlarged sectional view showing an embodiment of a fishing line guide member 1 according to the present invention, and has a ring shape having a through hole 1a for guiding a fishing line at a central portion.

The fishing line guide member 1 is formed of a ceramic sintered body such as a silicon carbide sintered body, a zirconia sintered body, or a cermet sintered body. For example, the fishing line guide member 1 is made of a zirconia sintered body. When formed, zirconia (Zr
Aluminum oxide (Al ₂ O ₃ ) powder to 30 O ₂ ) powder
40 wt%, oxide is a cobalt oxide of the periodic table Group 9 element (CoO) powder 20-30% by weight, yttrium oxide (Y ₂ O ₃₎ oxidation of the periodic table group 3 element such as powder The ceramic raw material is prepared by adding and mixing 0.1 to 5% by weight of the material, and then the ceramic raw material is formed into a predetermined shape by a die press, a cold isostatic press, or the like to obtain a ceramic molded body. Afterwards, the ceramic molded body is
It is manufactured by firing at a temperature of 0 to 1400 ° C.

When the fishing line guide member 1 is formed of a zirconia sintered body, the zirconia sintered body has excellent sliding properties and luster to fishing lines, and is susceptible to corrosion even when seawater or the like adheres. Since the fishing line is not provided, the fishing line can be smoothly guided and used suitably as the fishing line guide member 1.

When the fishing line guide member 1 is formed of a zirconia sintered body, the average crystal grain size of the sintered body is 3 mm.
When the thickness is set to μm or less, the mechanical strength of the fishing line guide member 1 is increased to enable long-term use. More preferably, it is set to 2 μm or less. In addition, the open porosity is 1
%, The mechanical strength of the fishing line guide member 1 can be increased to enable long-term use. It is more preferable to set the fishing line guide member 1 to 0.2% or less.

Further, the through-hole 1a has an average surface irregularity diameter of 50 to 200 .mu.m in at least a fifth region T from the opening end, whereby a fishing line having a diameter of 0.1 mm or more is formed in the through-hole 1a. When the fishing line is guided, the fishing line and the surface of the through-hole 1a are in point contact with each other, and the sliding contact area is small. As a result, the fishing line can be smoothly guided for a long time without damage.

The average unevenness diameter of the surface in at least one fifth area T from the opening end of the through hole 1a is 50
The reason for setting the thickness to 200 μm is based on the fact that in actual fishing, the contact between the fishing line and the surface of the through-hole 1a is equal to or less than one-fifth of the region T from the opening end of the fishing line guide member 1.

Further, when the average uneven diameter of the surface of the through hole 1a is less than 50 μm and more than 200 μm, when the fishing line having a diameter of 0.1 mm or more is guided into the through hole 1a, the fishing line and the surface of the through hole 1a may not be formed. Has a large sliding contact area, causing damage and fuzzing of the fishing line in a short period of time. Therefore, the through-hole 1a has an average irregularity diameter of 50 to 200 μm on its surface.
Specified in the range.

The average diameter of the concave and convex portions is an average value of the diameter X of each concave portion when the concave and convex portion 1b existing on the surface of the through hole 1a is divided by each convex portion as shown in FIG. Things. This average unevenness diameter is measured by a shape measuring instrument, and a reference length is arbitrarily taken on the surface of the through-hole 1a, and the number of protrusions existing on the reference length is counted, and the reference length is calculated as the protrusion. Can be calculated by dividing by the number of.

The surface of the through-hole 1a, including the surface of the uneven portion 1b, has an arithmetic average roughness (R
It is preferable to set the thickness in a) to 0.1 μm or less. The surface roughness including the surface of the uneven portion 1b is referred to as an arithmetic average roughness (Ra) in which the average unevenness diameter of the uneven portion 1b is omitted, that is, a so-called undulation load length ratio tw is considered. When the surface roughness is set to 0.1 μm or less in arithmetic average roughness (Ra), it is possible to effectively prevent the fishing line from being damaged when the fishing line comes into sliding contact, and to further extend the life of the fishing line. can do.

Further, on the surface of the through-hole 1a of the fishing line guide member 1, an arc-shaped processing is applied to the open end as shown in FIG. 1 in order to smoothly guide the fishing line. Preferably, the radius of curvature R of the arc is 0.5 to 10 mm, and the radius of curvature R is 0.5 mm to 10 m.
By setting m, the fishing line is smoothly guided without receiving a large load.

The fishing line guide member 1 is adhered and fixed to an outer peripheral surface of the joint frame via an adhesive such as an epoxy resin, and the joint frame is attached to a fishing rod, whereby the fishing line guide member 1 is attached to the fishing rod. It is attached.
The joint frame is made of stainless steel or titanium alloy,
It is formed of a metal material obtained by applying gold or chrome plating to iron, brass, or the like, and is manufactured by processing a wire such as stainless steel into a shape corresponding to the outer peripheral shape of the fishing line guide member 1 by press molding.

Thus, according to the fishing line guide member 1 of the present invention, after the fishing line is attached to the predetermined position of the fishing rod, the fishing line is guided into the through hole 1a to be used for fishing such as lure fishing.

Next, a method of manufacturing the fishing line guide member 1 will be described.

As shown in FIG. 3, first, a molding die 2 including a die having a molding space therein and a pair of upper and lower punches is prepared.

The molding die 2 is made of, for example, a cemented carbide, and a molding space corresponding to the shape of the fishing line guide member 1 shown in FIG. 1 is formed therein.

The molding die 2 has an average irregularity on a surface which is in contact with the molding space and which corresponds to at least a fifth region T from the opening end of the through hole 1a of the fishing line guide member 1. Processing is performed so that the diameter is 60 to 230 μm. As this processing, for example, electric discharge machining is employed.

The surface of the molding die 2 which is in contact with the molding space is made to have an average diameter of 60 to 230 μm because the ceramic molded body molded by using the molding die 2 is fired and used for fishing line. The surface of the through hole 1a of the guide member 1 is 50 to 20
This is for setting the average unevenness diameter to 0 μm.

Next, a ceramic material is filled in the molding space of the molding die 2 so that the average irregularity diameter of the surface in at least one fifth region T from the opening end of the through hole 1a is reduced. A ceramic molded body of 60 to 230 μm is formed.

As the ceramic material to be filled in the molding space of the molding die 2, for example, zirconia (ZrO)
₂ ) 30-minute aluminum oxide (Al ₂ O ₃ ) powder
40 wt%, periodic table Group 9 oxide in a cobalt oxide of the elements (CoO) powder 20-30% by weight, yttrium oxide (Y ₂ O ₃₎ oxide of the periodic table group 3 element such as powder Is added and mixed at 0.1 to 5% by weight.

Further, the ceramic raw material is used in a molding die 2.
By pressing from above and below with a pair of upper and lower punches, a predetermined shape, that is, a ring shape having a through hole 1a is formed. At this time, the average diameter of the irregularities on the surface in at least a fifth region T from the opening end of the through hole 1 a is 60 to 230 μm corresponding to the molding die 2.

[0036] Finally, about 1 part of the ceramic molded body is placed.
By firing at a temperature of 200 to 1400 ° C., the fishing line guide member 1 as a product is completed.

At this time, the average irregularity diameter of the surface in at least a fifth region T from the opening end of the through hole 1a provided in the fishing line guide member 1 becomes 50 to 200 μm due to shrinkage due to firing or the like.

According to such a manufacturing method, 60 to 2 are set in advance at a predetermined position of a molding die 2 used for forming a ceramic molded body to be a ceramic fishing line guide member 1.
Because it had been processed with an average uneven diameter of 30 μm,
By simply firing the ceramic molded body, it is possible to easily and stably produce the fishing line guide member 1 having an average surface irregularity diameter of 50 to 200 μm in a region at least one fifth from the opening end of the through hole 1a. Thus, the mass production is improved, and the fishing line guide member 1 as a product can be made inexpensive.

[0039]

According to the fishing line guide member of the present invention, the average unevenness diameter of the surface in at least one fifth of the entire area from the opening end of the through hole is 50 to 200 μm. When a fishing line having a diameter of 0.1 mm or more is guided, the fishing line and the surface of the through hole are in point contact with each other, and the sliding contact area is reduced. As a result, the fishing line can be smoothly guided for a long time without damage. Can be.

Further, according to the manufacturing method of the present invention, 60 to 2 parts are previously set at predetermined positions of a molding die used for forming a ceramic molded body to be a ceramic fishing line guide member.
Because it had been processed with an average uneven diameter of 30 μm,
By simply firing the ceramic molded body, it is possible to easily and stably produce a fishing line guide member having an average unevenness diameter of 50 to 200 μm on the surface in at least a fifth region from the opening end of the through hole, The fishing line guide member as a product can be made inexpensive with good mass productivity.

[Brief description of the drawings]

FIG. 1 is an enlarged sectional view showing an embodiment of a fishing line guide member of the present invention.

FIG. 2 is an enlarged sectional view of a main part of an uneven portion on the surface of a through hole of the fishing line guide member of the present invention.

FIG. 3 is a schematic view showing a method for manufacturing a fishing line guide member of the present invention.

[Explanation of symbols]

 1: guide member for fishing line 1a: through hole 1b: uneven portion 2: molding die

Claims (2)

[Claims] 1. A ceramic fishing line guide member having a through hole for guiding a fishing line having a diameter of 0.1 mm or more,
A fishing line guide member, wherein the average unevenness diameter of the surface in at least one fifth of the entire area from the opening end of the through hole is 50 to 200 μm. 2. A portion corresponding to the shape of the fishing line guide member according to claim 1, wherein a portion corresponding to at least a fifth region from the opening end of the through hole of the fishing line guide member is 60 to 60.
A molding die having a molding space processed to an average concavo-convex diameter of 230 μm is prepared, and a ceramic raw material is filled in the molding space. A ceramic molded body having an average diameter of irregularities on the surface in the region of 60 to 230 μm is obtained. Thereafter, the ceramic molded body is fired to have a through hole, and at least one fifth of the whole from the opening end of the through hole. The method of manufacturing a fishing line guide member, wherein the average unevenness diameter of the surface in the region is 50 to 200 μm.