JPH11178482A - Internally threaded fishing rod - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an internally threaded fishing rod decreasing the deterioration in the strength of the rod pipe main body, reducing the resistance of a fishing line, the injury and wear of the fishing line, etc., hardly broken even in a largely bent state, and capable of preventing plastic curvature, when a fishing line guide is formed on the inside of the internally threaded fishing line. SOLUTION: The characteristics of this internally threaded fishing rod comprise having a rod pipe main body provided with a prepreg 10 and a prepreg 12 and projectedly forming a fishing line guide on the inside of the rod pipe main body with a prepreg 7 containing reinforcing fibers having a lower elastic modulus than that of reinforcing fibers used in the prepreg 12. The prepreg 10 contains low elastic reinforcing fibers having an elastic modulus of <20 tonf/mm<2> and paralleled in the axial direction. The prepreg 12 contains reinforcing fibers having a higher elastic modulus than that of the reinforcing fibers paralleled in the axial direction and paralleled in the circumferential or inclined direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a through fishing rod for guiding a fishing line through the inside of a rod tube of the fishing rod.

[0002]

2. Description of the Related Art In general, a rod tube of a fishing rod is wound so that various prepregs are superimposed on a core metal, and a cellophane tape is wound thereon to stabilize the rod, and then introduced into a heating furnace. The synthetic resin is thermoset, then cooled, de-centered,
It is created through the steps of peeling, polishing, and painting cellophane tape. In this case, when the rod pipe is used for a through fishing rod, a step of forming a fishing line guide portion for guiding the fishing line to the inner peripheral surface of the rod pipe when winding various prepregs around the core metal is added. .

As a method of forming a fishing line guide portion for such a rod tube, for example, Utility Model Registration Publication No. 2533
No. 224 is known. In the technique disclosed in this publication, a resin tape is spirally wound around a cored bar, and after a prepreg is wound from above,
Finally, by peeling off the resin tape, a protruding portion (fishing line guide portion) protruding toward the axis on the inner peripheral surface of the rod pipe main body is formed integrally with the material of the rod pipe main body.

[0004]

According to the above construction, since the fishing line guide portion is formed integrally with the rod tube body formed of high-strength fiber, stress concentrates due to deflection of the fishing rod during actual fishing. There is a drawback that the strength of the rod tube body is reduced and the rod tube body is easily broken.

[0005] In addition, no consideration is given to the shape (material, size, shape, etc.) of the protruding portion serving as the fishing line guide portion, and there is a problem that the line resistance, the line is damaged, and the abrasion is large. Occurs.

[0006] Further, it is usually preferable that the rod pipe of the through-hole rod has a structure in which the inner diameter is made as large as possible to improve the flexibility and maintain the strength. It is not possible to obtain such a characteristic that a large bending occurs while maintaining a certain strength. That is, by using a prepreg made of a reinforcing fiber having a low tensile modulus (low elasticity) in general, the flexibility can be improved, but on the other hand, there is a problem that plastic bending and breakage are easily caused. The above-mentioned prior art does not suggest any specific configuration for solving the problem relating to plastic bending and breakage.

SUMMARY OF THE INVENTION It is an object of the present invention to reduce the strength of a rod tube main body and to reduce line resistance, line damage, abrasion, and the like when forming a fishing line guide in a through fishing rod. Another object of the present invention is to provide a through fishing rod which is hardly damaged even if it is greatly bent and can prevent plastic bending.

[0008]

In order to solve the above-mentioned problems, a through fishing rod according to the present invention comprises: a prepreg in which low-elasticity reinforcing fibers having an elastic modulus of less than ²⁰ tonf / mm ² are aligned in the axial direction; A prepreg in which the reinforcing fibers having a higher elasticity than the reinforcing fibers aligned in the axial direction are aligned in the circumferential direction or the inclined direction, and the prepreg is lower than the reinforcing fibers in the prepreg aligned in the circumferential direction or the inclined direction. The fishing line guide portion is formed so as to protrude inside the rod tube main body by a prepreg having elastic reinforcing fibers.

Further, the fishing rod of the present invention has an elastic modulus of 20.
A prepreg in which low-elasticity reinforcing fibers of less than tonf / mm ² are aligned in the axial direction, and a prepreg in which circumferentially or inclined reinforcing fibers having higher elasticity than the reinforcing fibers aligned in the axial direction are aligned. The fishing line guide portion is formed to protrude inside the rod tube main body provided with: and a wear-resistant portion is formed in the fishing line guide portion.

[0010] In the fishing rod of the present invention, the rod pipe body is formed of a prepreg made of synthetic resin reinforced with reinforcing fibers, a fishing line guide portion is provided on the inner peripheral surface of the rod pipe, and the reinforcing fiber of the rod pipe body is provided. It is characterized by being formed by prepreg made of a reinforcing fiber having a higher thermal expansion coefficient than that of the prepreg.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 to 3 show an embodiment of the present invention. FIG. 1 shows an example of an arrangement configuration of a prepreg forming a rod tube used for a through fishing rod, and FIG. 2 shows an example of a winding mode of the prepreg. , And FIG. 3 respectively show a partial cross section of the formed rod tube.

In the rod tube 1, a plurality of types of prepregs in which a synthetic fiber is impregnated with a synthetic resin are wound around a cored bar 3 so as to be polymerized, and this is introduced into a heating furnace to thermally cure the synthetic resin. It is created through steps such as cooling and de-centering. In this case, each prepreg has an elastic modulus of 0.1 to
Carbon, boron, glass, organic fibers, etc. of nf / mm ^{2 to} 90 tonf / mm ² are used, and an epoxy resin or the like is used as a synthetic resin to be impregnated.

Hereinafter, the steps of preparing the entire rod pipe and the configuration of each prepreg and fishing line guide will be described in detail. First, a description will be given of one means for forming a fishing line guide protruding inside the rod tube. First, a tape 5 having a predetermined width is spirally wound around the core metal 3 to form an uneven portion on the core metal 3. Next, an ultra-thin tape 6 is wound around the concave portion, a prepreg 7 for forming a fishing line guide is wound from above the ultra-thin tape, and a rod tube is formed from above the prepreg 7. Various prepregs are wound. After the core is removed, the tape 5 and the ultra-thin tape 6 are removed, so that the prepreg 7 forms a spiral fishing line guide 7a inside the rod tube as shown in FIG. In this case, the height, width, and the like of the formed fishing line guide 7a are adjusted by the thickness and the winding width of the tape 5. Also, the surface shape of the fishing line guide 7a can be smoothly finished by using the ultra-thin tape 6. In addition, various means can be used for the formation of the fishing line guide part 7a, and it is not limited to the means described above.

The rod tube 1 aligns the reinforcing fibers in the axial direction,
The first prepreg 10 cut so as to be two plies on the distal side and the proximal side, a prepreg 12a in which reinforcing fibers are aligned in the axial direction, and a prepreg 12b in which reinforcing fibers are aligned in the circumferential direction are lined. The second prepreg 12 is cut so as to be three plies each on the distal side and the proximal side, and a reinforcing prepreg 15 for reinforcing the base side of the rod pipe. In this case, the reinforcing prepreg 15 is composed of two stepped auxiliary prepregs 15a and 15b in which reinforcing fibers are aligned in the axial direction. Each of the auxiliary prepregs 15a and 15b has three winding portions 17, 18, 19 and 2 wound one ply each.
0, 21, 22 and each of the winding portions 17 to 22,
It is cut so that its length in the axial direction is different. Therefore, the thickness of the reinforcing layer formed by the reinforcing prepreg 15 increases stepwise from the middle portion to the end portion of the rod pipe.
The reinforcing prepreg 15 may be formed of one prepreg or may not be provided.
Alternatively, a reinforcing prepreg having another configuration (cutting shape, reinforcing fiber alignment direction, etc.) may be used as the reinforcing layer.

A prepreg 25 for forming a joint portion is wound around the base end side outer periphery of the prepreg 15 for reinforcement. The prepreg 25 is formed by lining a woven fabric 25b on a prepreg 25a in which reinforcing fibers are aligned in the axial direction, and forms a seam portion (thick portion) of the front and rear rod pipes.

As shown in FIG. 2, the first prepreg 10 is superimposed on the inside of the second prepreg 12, and after the second prepreg 12 is applied to the core 3 by one ply, the first prepreg 10 is wound on the second prepreg. Turned. Therefore, the innermost layer of the formed rod pipe is a circumferential reinforcing fiber layer made of the prepreg 12b. Further, the reinforcing prepreg 15 is configured to wind each of the auxiliary prepregs 15a and 15b in order, but they may be wound in a state where both are overlapped in advance.

In the above configuration, the first prepreg 1
The 0 reinforcing fibers, the low modulus things, specifically, less than the elastic modulus 20tonf / mm ^2, preferably 10tonf / mm ² or less, more preferably those 0.1tonf / mm ² ~5tonf / mm ² Is used, and the reinforcing fibers of the second prepreg 12 and the reinforcing prepreg 15 have a higher elastic modulus than that of the reinforcing fibers of the first prepreg 10, specifically, the elastic modulus is preferably ²⁰ tonf / mm ² or more, preferably. Is 20tonf / mm ² -30
A tonf / mm ² is used. As described above, by using a prepreg made of a low-elasticity reinforcing fiber, it is possible to obtain a flexible soft rod tube having a large bending amount and excellent flexibility, and using a prepreg made of a high-elasticity reinforcing fiber. By doing so, while maintaining the characteristics of soft tone,
It is possible to improve the strength and prevent plastic deformation. Therefore, the fishing rod can be guided smoothly by appropriately increasing the inner diameter of the rod pipe, and the rod pipe can provide a large bending characteristic without a decrease in strength or plastic deformation.

In this case, the thickness of the first prepreg (low-elasticity reinforcing fiber prepreg) 10 is at least 25% of the thickness of the second prepreg (high-elasticity reinforcing fiber prepreg) 12 so that the bending characteristics can be sufficiently exhibited. Preferably 40%,
More preferably, it is set to 50% or more. However, if the thickness of the low-elasticity reinforcing fiber prepreg 10 is too large, problems such as a decrease in strength and plastic deformation occur.
% Is recommended. It should be noted that such a thickness relationship may be satisfied at least in a part of the rod pipe. In the configuration shown in the figure, the thickness of the first prepreg 10 is
The thickness of the second prepreg 12 is set to 0.03 mm, and the thickness of the first prepreg 10 and the thickness of the second prepreg 12 are set to be equal on the distal end side. Further, such a low elasticity prepreg may not be disposed on the entire length of the rod pipe, but may be disposed only on a part of the front end where a large deflection is required.

In the above structure, a prepreg (oblique prepreg) in which reinforcing fibers are aligned in an inclined direction is used instead of, or in addition to, the prepreg (circumferential prepreg) 12b in which reinforcing fibers are aligned in the circumferential direction. May be.
When both the circumferential prepreg and the oblique prepreg are used, those having higher elasticity than the first prepreg are used as the reinforcing fibers, but when both prepregs are used, the circumferential reinforcing fibers are relatively high elasticity. Good for materials. Further, such a circumferential prepreg (oblique prepreg) is preferably disposed at a position to be the innermost layer as in the configuration shown in the figure.

The reinforcing prepreg 1 as described above
5 is arranged on the outer layer side and cut in a stepwise manner along the axial direction, thereby improving the tone of the rod and improving the directionality (preventing bending of the material, etc.). ) Can be achieved. In the case of using such a stepped reinforcing prepreg, three winding portions 1 each of which is wound by one ply of each of the auxiliary prepregs 15a and 15b.
7, 18, 19 and 20, 21, 22 are cut so that the longitudinal distance is reduced at equal intervals toward the proximal end so that the improvement of the tone and the improvement of the directionality can be more achieved. It is preferable to keep it.

In the above configuration, various methods can be used for winding each prepreg.
For example, prepregs can be arbitrarily pasted together beforehand,
This may be integrally wound around the core 3. The configuration and arrangement of the prepreg are merely examples, and can be variously modified.

Next, the configuration of the fishing line guide formed on the inner peripheral surface of the rod tube body will be described in detail. As the reinforcing fiber of the prepreg 7 for forming the fishing line guide portion 7a shown in FIG. 3, a material having a low elasticity is used, and the reinforcing fiber having a lower elastic modulus than the reinforcing fiber of the circumferential prepreg or the oblique prepreg is used. Used. That is, as shown in the figure,
In the case where the circumferential prepreg (oblique prepreg) is disposed in the innermost layer, the reinforcing fiber of the prepreg 7 is made to have a lower elasticity than that of the prepreg, so that the fishing line guide when the rod pipe bends. Stress concentration on the rod pipe main body by the portion 7a can be reduced, and damage to the rod pipe main body can be prevented.

In the case of the structure shown in the figure, the reinforcing fiber of the prepreg 7 is 16 tonf / mm ² or less, preferably 0.1 tonf / mm ^2.
/ mm ^{2 to} 10 tonf / mm ² . Also,
As the material, for example, carbon fiber, glass fiber, oxidized fiber, and organic fiber can be used.

Actually, the prepreg 7 as a fishing line guide portion
, The glass fiber is bundled, the resin impregnation amount is 20% to 70%, the fiber ratio is 30% to 80%, the cross-sectional area is 0.01 mm ² or more, and the number of twists is 100 times / m or more. It is preferable to make the configuration. Glass fiber has a large elongation (maximum elongation 5%) and a low elasticity (7.0 tonf / mm).
^{2 to} 8.5 tonf / mm ² ).
The influence of the fishing line guide portion wound in a spiral shape is unlikely to occur, and therefore, the characteristics of the rod tube main body, which is easy to bend, as described above, can be easily obtained. Further, as compared with carbon fibers, the number of twists per unit length can be increased, so that an effect that winding work is easy (when twisting is small, it is easy to separate from a groove at the time of winding) is obtained. Furthermore, the cross-sectional shape of the bundle is easy to be uniform (it is likely to be round), and the cross-sectional shape of the spiral fishing line guide is rounded like a normal guide ring, causing breakage, wear and friction. Can be suppressed.

The above-described configuration has been described in connection with the case where a highly elastic material such as the circumferential prepreg 12b is disposed in the innermost layer of the rod pipe main body.
In the case where a low elasticity material such as 0 is provided, it is preferable to use a reinforcing fiber of the prepreg 7 forming the fishing line guide portion that can cope with the bending (deflection) and elongation of the low elasticity material. .

According to the rod tube for the through fishing rod configured as described above, the flexibility and the strength can be improved even if the inner diameter is increased, and the fishing line guide portion at the time of bending can be attached to the rod tube main body. Stress concentration can be relieved, breakage and the like can be effectively prevented, and the guideability of the fishing line can be improved.

Next, another embodiment of the present invention will be described with reference to FIGS. The embodiment described here aims at improving the flexibility and strength of the rod pipe by combining a low elastic prepreg and a prepreg having higher elasticity as in the above embodiment, and furthermore, in the fishing line guide portion. The aim is to improve the guideability and abrasion resistance of the fishing line. Each drawing shows a cross section of the fishing line guide formed on the inner peripheral surface of the rod tube main body 30.

As shown in FIG. 4, the projection height h of the fishing line guide portion 40 formed in a spiral or ring shape is the wall thickness t of the rod tube main body 30 (0.15 mm to 0.5 m).
m) is preferably 1.5 to 3.5 times, preferably 2 to 3 times. With such a height relative to the thickness t of the rod tube main body 30, the fishing line does not easily come into contact with the rod tube main body. Further, it is preferable that the width w is larger than the projection height h in order to make it easier for water accumulated therein to flow out. In addition, the thickness t /
By reducing the outer diameter of the rod tube to 0.1 or less, weight reduction can be achieved. Further, the overall shape of the fishing line guide portion 40 is preferably an R shape in which the region of the top portion 40a where the fishing line slides easily and abuts is smoothly inclined. In addition, such a shape can be formed by interposing the ultra-thin tape 6 as shown in FIG. 1 or using a prepreg made of glass fiber as described above. As a member constituting the fishing line guide portion, in addition to the prepreg as described above,
For example, it is possible to configure only with resin.

When the fishing line guide section 40 is formed of a prepreg, the higher the fiber ratio, the higher the abrasion resistance against the sliding fishing line, but the higher the fiber ratio, the higher the fiber ratio. It is not preferable to go too far. That is, when the rod pipe is largely bent, there is a difference in wall thickness between the rod pipe and the rod pipe body 30, and the rigidity is partially different. Therefore, as shown in FIG. 5, the fiber ratio of the portion where the sliding fishing line is most likely to hit, that is, the region of the top portion 41 is increased, and the fiber ratio of the other intermediate portion 42 and the lower portion 43 is reduced. Is good. Specifically, the fiber ratio at the top is 60 to 65% or more, the fiber ratio of the intermediate portion 42 and the low portion 43 on the main body side is about 20 to 60%, and the average fiber ratio is 30 to 6%.
It is good to make it about 0%. In this configuration, it is preferable to use carbon fiber, glass fiber, or the like having high abrasion resistance as the reinforcing fiber. The fishing line guide section 40 in which the fiber ratio changes in this manner can be formed, for example, by laminating different reinforcing fibers or laminating those having different resin impregnation amounts.

The fishing line guide section 50 shown in FIG. 6 has a structure in which the amount of resin impregnated on the side 51 where the fishing line is likely to abut is reduced and the amount of resin impregnated on the opposite side 52 is increased during winding when a large load is applied to the line. Is shown. If the resin impregnation amount is small, the properties of the reinforcing fiber can be easily obtained and the abrasion resistance can be improved. Therefore, by reducing the amount of resin impregnation on the side to which a large load is applied, the wear resistance of a necessary portion can be improved, and a wear-resistant fishing line guide can be efficiently formed. In this configuration, as the reinforcing fibers,
It is preferable to use carbon fiber, glass fiber, or the like having high wear resistance. The fishing line guide section 50 having such a configuration can be formed, for example, by changing the cross-sectional shape of the tape 5.

The fishing line guide portion 60 shown in FIG. 7 has a large diameter reinforcing fiber 62 in the top region where the fishing line is likely to abut, a small diameter reinforcing fiber 63 in other portions, and a resin impregnating portion. This shows a configuration in which the amount is increased. The larger the diameter of the reinforcing fiber is, the more the strength of the reinforcing fiber is improved, so that the abrasion resistance can be improved. Therefore, by arranging the reinforcing fibers having a large diameter on the top side, a configuration in which the abrasion resistance of a portion where the yarn easily contacts can be improved. In this configuration, it is preferable to use carbon fiber, glass fiber, or the like having excellent wear resistance as the large-diameter reinforcing fiber 62, and to improve the adhesion to the rod pipe main body as the small-diameter reinforcing fiber 63. Therefore, it is preferable to use a material having low elasticity.
The fishing line guide section 60 having such a configuration can be formed by, for example, laminating fibers having different fiber diameters.

Next, another configuration of the fishing line guide will be described. As described above, the fishing line guide portion can be formed by a prepreg. In actuality, in the forming process of the rod tube, the prepreg wound in a spiral shape is thermoset to be integrated with the inner peripheral surface of the rod tube. Is formed.

In such a configuration, it is preferable that the reinforcing fiber of the prepreg forming the fishing line guide portion be made of a material having a larger coefficient of thermal expansion than the reinforcing fiber of the prepreg which is the innermost layer of the rod pipe main body. With this configuration, the heat shrinkage of the fishing line guide portion at the time of molding becomes larger than that of the rod tube main body side, so that the internal stress for pushing the rod pipe main body outward can be reduced, and the rod pipe The main body can be prevented from being damaged. In addition, it is possible to reduce the increase in the rigidity of the rod tube by the fishing line guide portion (without hindering the deformation and bending of the rod tube), and to obtain a rod tube having good flexibility. That is, the amount of shrinkage of the reinforcing fiber of the prepreg constituting the fishing line guide portion in the radial direction from the firing temperature to the ordinary temperature during rod pipe forming is equal to or greater than that of the rod pipe main body (however, it is not peeled off). To be configured.

Specifically, when a circumferential prepreg made of a reinforcing fiber having an elastic modulus of 24 tonf / mm ² is provided in the innermost layer of the rod pipe main body, the reinforcing fiber of the prepreg forming the fishing line guide portion is made of glass fiber or organic fiber. It is possible to use fibers.
Of course, the type of the reinforcing fiber may be appropriately changed according to the type of the prepreg forming the innermost layer of the rod pipe main body.

Although the embodiment of the present invention has been described above, the specific elastic modulus and linear expansion coefficient of the reinforcing fiber used in each of the above-mentioned prepregs, the thickness of the prepreg,
The number of windings, the amount of resin impregnation, the amount of material used, and the like can be variously modified according to the site (the distal end, the proximal end, etc.) where the rod tube is used, the required characteristics of the fishing rod, and the like.

[0036]

According to the present invention, it is possible to reduce the strength of the rod tube main body, the line resistance, the damage of the line, the abrasion, etc., when forming the fishing line guide portion in the through fishing rod.
In addition, the through fishing rod having such a configuration can be configured so as not to be easily damaged even if greatly bent and not to bend plastically.

[Brief description of the drawings]

FIG. 1 is a diagram showing an example of the arrangement and configuration of a prepreg forming a rod tube used in a fishing rod of the present invention.

FIG. 2 is a view showing a winding mode of the prepreg shown in FIG. 1;

FIG. 3 is a view showing a partial cross section of a rod pipe formed by the arrangement configuration example of the prepreg shown in FIG. 1;

FIG. 4 is a sectional view showing a first embodiment of a fishing line guide formed on the inner peripheral surface of the rod tube main body.

FIG. 5 is a sectional view showing a second embodiment of the fishing line guide formed on the inner peripheral surface of the rod tube main body.

FIG. 6 is a sectional view showing a third embodiment of a fishing line guide formed on an inner peripheral surface of a rod tube main body.

FIG. 7 is a sectional view showing a fourth embodiment of a fishing line guide formed on the inner peripheral surface of the rod tube main body.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 rod pipe 3 core metal 7 prepreg 7a forming fishing line guide portion 7a fishing line guide portion 10 first prepreg 12 second prepreg 12a prepreg in which reinforcing fibers are aligned in the axial direction 12b prepreg in which reinforcing fibers are aligned in the circumferential direction 15 prepreg for reinforcement 30 rod body 40, 50, 60 fishing line guide

Claims (4)

[Claims] 1. A prepreg in which low-elasticity reinforcing fibers having an elastic modulus of less than 20 tonf / mm ² are aligned in the axial direction, and a reinforced fiber having a higher elasticity than the reinforcing fibers aligned in the axial direction in the circumferential direction or A rod pipe main body having a prepreg aligned in the inclined direction, the rod pipe main body being formed by a prepreg having a reinforcing fiber having a lower elasticity than a reinforcing fiber of the prepreg aligned in the circumferential direction or the inclined direction. A through fishing rod characterized by having a fishing line guide protruding inside. 2. A prepreg in which low-elasticity reinforcing fibers having an elastic modulus of less than 20 tonf / mm ² are aligned in the axial direction, and a reinforced fiber having a higher elasticity than the reinforcing fibers aligned in the axial direction in the circumferential direction or It is a through fishing rod in which a fishing line guide portion is formed protruding inside a rod tube main body having a prepreg aligned in a tilt direction,
A through fishing rod, wherein a wear-resistant portion is formed in the fishing line guide portion. 3. The through fishing rod according to claim 2, wherein the height of the fishing line guide is 1.5 to 3.5 times the thickness of the rod tube main body. 4. A rod pipe main body of the fishing rod having a through-hole is formed of a prepreg made of synthetic resin reinforced with reinforcing fibers, and a fishing line guide is formed on the inner peripheral surface of the rod pipe with a thermal expansion coefficient higher than that of the reinforcing fibers of the rod pipe main body. A through fishing rod characterized by being formed with a prepreg made of a reinforcing fiber having a large size.