JP2017127248A - Long Rod - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a long rod that has high flexural strength and torsion strength while being a single piece.SOLUTION: An inner layer 6 is a solid rod-shaped body formed by making resin be melted on aligned reinforcing fibers g. An intermediate layer 7 is a closely contacted spiral body formed by an aligned narrow width prepreg tape 10 being wound in a spiral along an axial direction while the ends in the narrow width direction come into close contact with each other. An outer layer 8 is the X winding spiral body where a narrow width inside prepreg tape 11A and a narrow width outside prepreg tape 11B aligning the reinforcing fibers along the longitudinal direction and being wound in a spiral along the axial direction at constant spiral intervals in a shaft core direction are wound so that the reinforcing fibers of those inside and outside prepreg tapes 11A, 11B may intersect in a radial direction view to each other.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a fishing rod that is assumed to be used for fishing large fish such as yellowfin tuna exceeding 40 kg, or a long rod used for a bicycle frame or the like.

  Conventionally, there is a fishing rod as one of the long rods that employ a solid rod-like body as an inner layer. In such a configuration, it is a solid rod-shaped rod body in which reinforcing fibers are aligned and arranged in the direction along the axis to melt and harden the resin. By setting appropriately, even when a fish is applied and a load is applied to cause an arc-like bend, the bending strength of the tip of the tip can be made sufficient (Patent Publication 1).

Japanese Patent Laying-Open No. 2007-20498 (paragraph number [0016], FIG. 1)

  However, in the present invention, unlike the conventional configuration in which only the tip rod in the fishing rod formed by connecting a plurality of rods is formed, the entire fishing rod is intended to be configured with a single rod. For this purpose, a solid rod-shaped body is adopted as a single rod body, and an electric reel is attached to the solid rod-shaped body as shown in FIG. 1 to form a large fishing rod. .

  Then, the solid structure of the solid rod-like body has insufficient rigidity to resist torsion, and when a fish is caught, it is difficult to control the rampage of the fish such as sideways running, and there is room for improvement in fishing operability. .

  An object of the present invention is to provide a long rod having high bending strength and high torsional strength while being a casing based on a single solid rod-like body.

〔Constitution〕
The characteristic configuration of the invention according to claim 1 is a long rod comprising an inner layer, an intermediate layer located outside the inner layer, and an outer layer outside the intermediate layer,
The inner layer is a solid rod-like body formed by arranging the aligned reinforcing fibers in a direction along the axis of the inner layer and melting the resin in the reinforcing fiber group.
In the intermediate layer, a prepreg tape for a narrow intermediate layer in which reinforcing fibers are aligned along the longitudinal direction is spirally wound along the axial direction in a state where the ends in the narrow width direction are in close contact with each other. Is a close contact spiral formed,
The outer layer is an inner layer for a narrow outer layer that is formed by aligning reinforcing fibers along the longitudinal direction and spirally winding along the axial direction with a constant helical interval in the axial direction. An outer prepreg for a narrow outer layer, in which reinforced fibers are aligned along the longitudinal direction, and the prepreg tape is wound spirally along the axial direction with a constant helical interval in the axial direction. The tape is that the reinforcing fibers of the inner and outer prepreg tapes for these outer layers are wound in an X-wound form wound so as to cross each other in the radial direction, and the operation and effect thereof are as follows.

[Action]
That is, an X-shape is exhibited by crossing an inner layer outside the inner layer and an outer layer inner prepreg tape and an outer layer outer prepreg tape while being spirally wound around the outer layer. The outer layer was configured as follows. Accordingly, the reinforcing fibers arranged in the longitudinal direction of the prepreg tape of the outer layer are arranged in a posture inclined with respect to the rod axis, and they are arranged so as to intersect in an X shape. These reinforcing fibers exerted a counteracting force even when the torsion was applied, and it was possible to provide a long rod having a high resistance to twisting.

  For the purpose of verifying the configuration described above, a test was performed using a structure in which an X-wrapped spiral body was directly applied to the outside of the inner layer as described above. The test method was to monitor the behavior of the long rod by extending the tip side in a cantilevered manner and attaching a weight to the tip while the hand part was attached and fixed to a fixing jig. A test example will be described with reference to a test result table to be described later.

  First, a test was conducted by changing the thickness of the spiral wound X. Referring to Table 1 to be described later, partial peeling from the surface of the inner layer of the inner and outer prepreg tapes and noise generation could not be suppressed only by changing the thickness of the inner and outer prepreg tapes.

  Therefore, various intermediates are described between the outer peripheral surface of the solid body made of glass reinforcing fiber (glass fiber solid rod-shaped body) as the inner layer and the inner peripheral surface of the X-wrapped spiral body as the outer layer. Improvements were attempted by forming layers. Referring to Table 2 to be described later, although improvement was seen in partial peeling from the surface of the inner layer of the inner and outer prepreg tapes, it was not possible to suppress noise.

  Next, a method of winding another layer on the X-wrapped spiral body, and a densely wound prepreg sheet, not a sheet material, as an intermediate layer interposed between the X-wrapped spiral body and the inner layer I tried the test. Referring to Table 3 to be described later, this test was able to improve partial peeling and noise from the surface of the inner layer of the inner and outer prepreg tapes, and the configuration described in the claims could be derived.

〔effect〕
As a result of the above verification, in particular, by focusing on tests 13 and 15, by introducing a densely wound thin prepreg tape as an intermediate layer, an X-wrapped prepreg tape with high torsional strength. It was possible to provide a long rod that suppressed peeling and noise.

〔Constitution〕
The characteristic configuration of the invention according to claim 2 resides in that the outer layer is formed over the entire length of the axial length of the long rod, and its operational effects are as follows.

[Function and effect]
That is, the X-wrapped prepreg tape constituting the outer layer is applied over the entire length, so that the torsional strength can be increased without leakage from the small diameter side to the large diameter side. Will be less and it will be easier to whip to suppress the movement of fish.

〔Constitution〕
The characteristic configuration of the invention according to claim 3 resides in that the spiral winding start point of the prepreg tape is set at a position spaced apart from the tip of the inner layer by a fixed distance from the tip of the inner layer. Is as follows.

[Function and effect]
In other words, when the intermediate layer is wound all the way to the tip side, the sounding at that part becomes large, and in order to avoid this, the spiral winding start point is spaced from the tip of the inner layer toward the bottom end at a constant interval. It was set to a position separated by only.

〔Constitution〕
The characteristic configuration of the invention according to claim 4 is that the reinforcing fibers of the inner layer are glass reinforcing fibers, and the reinforcing fibers of the intermediate layer and the outer layer are carbon reinforcing fibers, The effects are as follows.

[Function and effect]
That is, when the reinforcing fiber of the inner layer is glass fiber and the reinforcing fiber of the outer layer is carbon fiber, when the X-wrapped prepreg tape of the outer layer is directly wound, the difference in elastic modulus of both fibers The elongation of the solid body is different along the axis, but in the case of the prepreg tape that is slanted over the solid body, the direction of elongation is relative to the axis. This results in further emphasis on the fact that the prepreg tape cannot follow the elongation of the outer peripheral surface of the solid body, and peeling and noise are likely to occur, but the intermediate layer is made of carbon fiber. By incorporating a tightly wound prepreg tape only one layer, peeling and noise can be suppressed.

FIG. 1 is an overall side view of a boat that is one of the long rods. FIG. 2 is an overall perspective view showing a solid rod-like body that is an inner layer. FIG. 3 is a perspective view showing a state in the middle of winding the prepreg tape for the intermediate layer with the dense winding to form the densely wound spiral body as the intermediate layer on the outer peripheral surface of the solid rod-like body. FIG. 4A is a perspective view showing a state in the middle of winding the inner prepreg tape for the outer layer on the intermediate layer, and FIG. 4A shows the outer layer on the inner prepreg. It is a perspective view which shows the state in the middle of winding the outer side prepreg tape. FIG. 5 is a perspective view showing a state in which the winding spiral body X is finished on the intermediate layer. 6 is a cross-sectional view taken along line VI-VI in FIG. FIG. 7 is a perspective view showing another embodiment of the intermediate layer.

A fishing rod A that is assumed to be used for fishing large fish such as yellowfin tuna exceeding 40 kg as a long rod will be described.
As shown in FIG. 1, a fishing rod A has a plurality of fishing line guides 2 attached to a single rod body 1 and a hand grip portion 3 on the hand side and a metal reel sheet 4 on the hand side. The electric reel 5 connected to a power source (not shown) is attached to the reel sheet 4 with a power cord 5a and attached to a ship's edge or the like.

As shown in FIG. 6, the housing 1 includes a solid rod-like body 6 as an inner layer at a central position, an intermediate layer 7 located outside the solid rod-like body 6, and an outer layer outside the intermediate layer 7. 8 are arranged.
As shown in FIG. 2, the solid rod-like body 6 is a single long rod-like body over a total length L of slightly over 2 m, and a large number of glass reinforcing fibers g are aligned along the axial direction and thermoset. Then, a predetermined loose taper outer peripheral surface is exhibited.

Specifically, it is manufactured as follows. Glass fiber fillers are gathered from 500 to 1000 units, and the filler groups are sequentially immersed in a thermosetting resin liquid such as an epoxy resin as a matrix resin to impregnate the filler groups with the resin. The filler group impregnated with the resin is squeezed into a rod shape through a die, and the rod-shaped body is baked to form an integrated solid of the filler and the resin.
As the resin, in addition to the epoxy resin, a thermosetting resin such as a phenol resin or a polyester resin, or a thermoplastic resin such as PV (E) can be used. The elastic modulus of the glass reinforcing fiber g is 2 ton / mm ² to 8 ton / mm ² .
As described above, the outer peripheral surface formed in the rod-like body is processed into a predetermined tapered outer peripheral surface by a centerless polishing machine or the like, but the tip side diameter d is 6 mm to 10 mm, preferably 8 mm, and the proximal diameter D is 13 mm to It is preferably set to 15 mm at 17 mm.

Next, the intermediate layer 7 will be described.
As shown in FIG. 3, a prepreg tape 10 for a thin intermediate layer is formed by impregnating a reinforcing fiber c such as a carbon fiber aligned along the longitudinal direction with a thermosetting resin such as an epoxy resin as a matrix resin. Form. The prepreg tape 10 is spirally wound around the solid rod-like body 6 along the axial direction. The spirally wound state is a close contact state in which the side ends of adjacent portions in the narrow width direction of the prepreg tape 10 wound around the solid rod-like body 6 are in contact with each other. In this way, a tightly wound spiral body as the intermediate layer 7 is formed by winding the prepreg tape 10 in a spiral shape.
The spiral winding start point b of the prepreg tape 10 is set at a position spaced from the tip of the solid rod-like body 6 toward the tail end by a constant interval L1, and the constant interval L1 is 400 mm to 600 mm, preferably 500 mm. is there. Further, the winding lead angle Θ ₁ of the prepreg tape 10 is in the range of 10 ° to 80 ° with respect to the rod axis X.

Specifically, as the reinforcing fiber c constituting the prepreg tape 10 for the intermediate layer, glass fiber, aramid fiber, alumina fiber or the like can be used in addition to carbon fiber, and as the resin, besides epoxy resin, phenol resin Thermosetting resins such as polyester resins and thermoplastic resins such as PV (E) can be used.
The elastic modulus of the reinforcing fiber c is 20 to 40 ton / mm ² , and the medium / high elastic modulus reinforcing fiber is employed. If the width of the prepreg tape is 5 mm or 3 mm and the thickness t ₁ is 0.1 mm or less, it is desirable to take a value between 0.01 mm and 0.07 mm.

Next, the outer layer 8 will be described.
As shown in FIG. 5, reinforced fibers such as carbon fibers aligned along the longitudinal direction are impregnated with a thermosetting resin such as an epoxy resin as a matrix resin to form a prepreg tape 11 for a narrow outer layer. Form. The prepreg tape 11 is spirally wound around the intermediate layer 7 along the axial direction. The spirally wound state is wound with the interval L2 between adjacent spirals set to be four times the width of the prepreg tape 11.
As shown in FIG. 5, when wound to the proximal end, it circulates in the circumferential direction at the end, and this time further crosses on the outward prepreg tape 11A as the inner prepreg tape for the outer layer wound in the outward path. In this manner, the return prepreg tape 11B as the outer prepreg tape for the outer layer is wound to form an X-wound spiral body. Therefore, when viewed from the direction orthogonal to the rod axis X, it is understood that the forward prepreg tape 11A and the forward prepreg tape 11B intersect in an X shape. Further, the winding lead angle Θ ₂ of the prepreg tape 11 is in the range of 10 ° to 80 ° with respect to the rod axis X. In this case, the inner and outer prepreg tapes for the outer layer are the same prepreg tape.

Specifically, as the reinforcing fiber c constituting the prepreg tape 11 for the outer layer, glass fiber, aramid fiber, alumina fiber, or the like can be used in addition to carbon fiber, and as the resin, besides epoxy resin, phenol resin Thermosetting resins such as polyester resins and thermoplastic resins such as PV (E) can be used.
The elastic modulus of the reinforcing fiber c is 20 to 40 ton / mm ² , and the medium / high elastic modulus reinforcing fiber is employed. The width of the prepreg tape is employed 5mm or 3 mm, the thickness _{t 2} is as long at 0.1mm or less, it is desirable to take a value between 0.01Mm～0.07Mm.

After winding the outer layer 8, the entire length is covered with a resin tape such as polypropylene and fired in a firing furnace. After firing, the resin tape is peeled off, and a predetermined decoration process such as silver mirror coating is applied to finish the fishing rod.
In the above embodiment, the outer layer 8 is formed by reciprocating the single prepreg tape 11. For example, after the inner layer prepreg tape 11A for the outer layer has been wound up to the proximal end, A method may be employed in which the outer prepreg tape 11B for the outer layer is wound from the side toward the hand end in an X shape from the side toward the hand side.

（１）Ｎｏ１テスト材
（構造）：内側層としてのガラス強化繊維製ソリッド体（以後ソリッド体と略称する）の外周面に、外側層として５ｍｍ幅、０．１ｍｍ厚の内外プリプレグテープをピッチ１５ｍｍでＸ巻にしたものを用いてテストした（Ｘ巻について図５を参照）。
（結果）：プリプレグテープの一部にソリッド体より剥離する部分が見られ、竿体より音鳴りがあった。
（考察）：このような剥離現象、及び、音鳴りの発生原因としては、釣り竿が荷重を受けて曲りを生じる場合に、ソリッド体の曲りは軸線に沿ったものであるが、そのソリッド体に斜めに架け渡されているプリプレグテープでは伸びの方向が軸線に対して傾斜する方向である為にソリッド体の伸び方向とは異なっており、ソリッド体の外周面の伸びにプリプレグテープでは追従できないという点にあると考えられる。
また、ソリッド体は、ガラス製の強化繊維であるが、プリプレグテープは炭素製の強化繊維で構成しているところから、強化繊維の面でも弾性率等に違いがあり、そのことがより剥離現象、及び、音鳴りを助長していると考えられる。また、先端部で一旦曲りを生じた場合に元の姿勢に戻り難い「塑性の発生」も見られた。 A test was conducted to derive the configuration described in the above claims. However, these should be referred to for reference because the conditions are limited.
1. Test by changing the thickness of the spiral winding X

(1) No1 test material (Structure): An inner and outer prepreg tape having a width of 5 mm and a thickness of 0.1 mm as an outer layer is formed on the outer peripheral surface of a glass reinforced fiber solid body (hereinafter abbreviated as a solid body) as an inner layer with a pitch of 15 mm. The test was performed using the X-wrapped X (see FIG. 5 for the X-wrapped).
(Result): A part of the prepreg tape was peeled off from the solid body, and there was a noise from the housing.
(Discussion): The cause of such peeling phenomenon and squeal is that when the fishing rod receives a load and bends, the bending of the solid body is along the axis. In the prepreg tape that is slanted, the direction of elongation is inclined with respect to the axis. Therefore, the direction of the solid body is different from that of the solid body. It seems that there is a point.
In addition, the solid body is a glass reinforcing fiber, but the prepreg tape is composed of carbon reinforcing fiber. It is thought that it is conducive to sounding. In addition, “plasticity” that hardly returned to the original posture once bent at the tip was also observed.

(2) No2 test material (Structure): An outer and outer prepreg tape having a width of 5 mm and a thickness of 0.07 mm as an outer layer wound in an X-winding manner at a pitch of 15 mm on the outer peripheral surface of a glass reinforced fiber solid body as an inner layer And tested (see FIG. 5 for volume X).
(Result): The same as in the case of No. 1 test cage, except that the thickness of the prepreg tape was slightly reduced.
(3) No. 3 test cage (Structure): An outer and outer prepreg tape having a width of 5 mm and a thickness of 0.05 mm as an outer layer, which is wound in X at a pitch of 15 mm, on the outer peripheral surface of a glass reinforced fiber solid body as an inner layer And tested (see FIG. 5 for volume X).
(Result): It is the same as in the case of No1 test cage and No2 test cage, only that the thickness of the prepreg tape is slightly reduced.
As a result of the above, the prepreg tape peeling phenomenon and sound generation could not be eliminated even when the thickness of the X-wrapped tape was simply wound on the solid rod-like body.

（４）Ｎｏ４テスト材
（構造）：内側層としてのガラス強化繊維製ソリッド体の外周面に、中間層としての炭素繊維を軸芯方向に引き揃え、樹脂を溶融させてシート状にした単一のプリプレグシートをロッド軸線長の全長に亘って巻回し、その外周面に外側層として５ｍｍ幅、０．０５ｍｍ厚の内外プリプレグテープをピッチ１５ｍｍでＸ巻にしたものを用いてテストした（Ｘ巻について図５を参照）。
（結果）：プリプレグテープの一部に剥離する部分が見られたが剥離状態はさほどではない一方、音鳴りは大きなものがあった。塑性の発生も見られた。
（考察）：このような剥離現象が抑えられた背景には、プリプレグシートの炭素繊維の配向方向が円周方向であるからと考えられる。
また、ソリッド体は、ガラス製の強化繊維であるが、プリプレグシート及びプリプレグテープは炭素繊維であるところから、弾性率に違いがあり、そのことがより剥離現象、及び、音鳴りを助長していると考えられる。
（５）Ｎｏ５テスト材
（構造）：Ｎｏ４テスト竿とはプリプレグシートの炭素繊維の配向方向が軸線方向である点が異なっているだけである。
（結果）：プリプレグテープの一部に剥離する部分が見られ、音鳴りは大きなものがあった。塑性の発生は見られなかった。
（考察）：このような剥離現象、及び、音鳴りの発生原因としては、中間層として、プリプレグシートを管全長に巻いている為と考えられる。
また、ソリッド体は、ガラス製の強化繊維であるが、プリプレグシート及びプリプレグテープは炭素繊維であるところから、弾性率に違いがあり、そのことがより剥離現象、及び、音鳴りを助長していると考えられる。 2. Test for interposing an intermediate layer (sheet material) between the wound spiral body and the solid body Therefore, the outer peripheral surface of the solid body made of glass reinforcing fiber (glass fiber solid rod-shaped body) as the inner layer and X as the outer layer Improvement was attempted by forming various intermediate layers as described below between the inner and outer peripheral surfaces of the inner and outer prepreg tapes of the spiral wound body. The contents are as follows.

(4) No. 4 test material (Structure): A single sheet in which a carbon fiber as an intermediate layer is aligned in the axial direction on the outer peripheral surface of a glass reinforced fiber solid body as an inner layer, and the resin is melted to form a sheet. A prepreg sheet was wound over the entire length of the rod axis, and tested using a 5 mm wide and 0.05 mm thick inner / outer prepreg tape as an outer layer on the outer circumferential surface of the prepreg sheet with a pitch of 15 mm. (See FIG. 5).
(Result): A part of the prepreg tape was peeled off, but the peeled state was not so much, but there was a loud sound. The occurrence of plasticity was also observed.
(Consideration): It is considered that the orientation direction of the carbon fibers of the prepreg sheet is the circumferential direction in the background in which such a peeling phenomenon is suppressed.
In addition, the solid body is a glass reinforcing fiber, but the prepreg sheet and the prepreg tape are carbon fibers, so there is a difference in elastic modulus, which further promotes the peeling phenomenon and noise. It is thought that there is.
(5) No5 test material (Structure): The difference from the No4 test cage is that the orientation direction of the carbon fibers of the prepreg sheet is the axial direction.
(Result): A part of the prepreg tape was peeled off, and the sound was loud. There was no occurrence of plasticity.
(Consideration): The reason for the occurrence of such a peeling phenomenon and noise is considered to be that a prepreg sheet is wound around the entire length of the pipe as an intermediate layer.
In addition, the solid body is a glass reinforcing fiber, but the prepreg sheet and the prepreg tape are carbon fibers, so there is a difference in elastic modulus, which further promotes the peeling phenomenon and noise. It is thought that there is.

(6) No6 test material (Structure): A single glass fiber as an intermediate layer is aligned in the axial direction on the outer peripheral surface of a glass reinforced fiber solid body as an inner layer, and the resin is melted to form a sheet. The prepreg sheet was wound over the entire length of the rod axis, and the outer peripheral surface was tested using a 5 mm wide, 0.05 mm thick inner and outer prepreg tape wound with X at a pitch of 15 mm (X See FIG. 5 for the winding).
(Result): The elastic modulus of the glass reinforced fiber is approximately the same for both the solid body and the prepreg sheet, but a portion to be peeled off was observed on the prepreg tape, and a noise was generated. There was no occurrence of plasticity.
(Consideration): Although the occurrence of plasticity was suppressed in terms of glass reinforced fiber, the elongation when bending was applied due to the difference in the shape of the solid body and the prepreg sheet, that is, the peeling of the prepreg tape It is speculated that this may lead to the generation of test material sound.
(7) No7 test material (Structure): Glass fiber as an intermediate layer is aligned in the circumferential direction on the outer peripheral surface of a glass reinforced fiber solid body as an inner layer, and the resin is melted to form a single sheet A prepreg sheet was wound over the entire length of the rod axis, and tested using a 5 mm wide and 0.05 mm thick inner / outer prepreg tape as an outer layer on the outer circumferential surface of the prepreg sheet with a pitch of 15 mm. (See FIG. 5).
(Result): A part of the prepreg tape was peeled off, but not so much, and the prepreg peeled off was loud. There was no occurrence of plasticity. However, wrinkles are generated in the X-winding prepreg tape forming the outer layer.
(Discussion): No. 6 test material is different only in that the orientation direction of the glass fiber of the prepreg sheet is the circumferential direction, but the peeling phenomenon is suppressed because the orientation direction of the reinforcing fiber is circular. This is considered to be in the circumferential direction. However, one of the causes of wrinkles is that the sheet and the tape are glass reinforcing fibers and carbon reinforcing fibers.

(8) No8 test material (Structure): Glass fiber woven fabric (thin thickness) as an intermediate layer is covered on the outer peripheral surface of a glass reinforced fiber solid body as an inner layer, and the outer peripheral surface is 5 mm as an outer layer. A test was performed using an inner and outer prepreg tape having a width of 0.05 mm and an X volume wound at a pitch of 15 mm (refer to FIG. 5 for the X volume). However, the glass woven fabric is not applied at a constant interval from the solid heel tip toward the heel side.
(Result): A part of the prepreg tape was peeled off, but not so much, and there was also a noise. There was no occurrence of plasticity. However, wrinkles are generated in the X-winding prepreg tape forming the outer layer.
(Discussion): The peeling of the prepreg tape is suppressed, but the noise is not suppressed. However, wrinkles are generated in the X-winding prepreg tape forming the outer layer.
(9) No. 9 test material (Structure): No. 8 test material is different from the No. 8 test material in that the thickness of the glass fiber fabric is thick and the glass fabric is provided over the entire length.
(Result): Same as No. 8 test material.
(Consideration): In the case of a glass fiber woven fabric, it seems that it is not influenced by whether or not it is applied to the thickness and the total length of the woven fabric. However, since it is a woven fabric, there is a difference in behavior with the prepreg, which is thought to be related to the generation of noise and wrinkles.

(10) No10 test material (Structure): A non-woven fabric as an intermediate layer is applied to the outer peripheral surface of a glass reinforced fiber solid body as an inner layer, and further, the outer peripheral surface is 5 mm wide and 0.05 mm thick as an outer layer. The test was performed using an inner and outer prepreg tape having a winding of X at a pitch of 15 mm (see FIG. 5 for the winding of X). The nonwoven fabric itself is thicker than the prepregs from No1 test cage to No9 test cage.
(Result): The prepreg tape was peeled off or squeezed. However, no wrinkles occurred in the X-winding prepreg tape forming the outer layer.
(Discussion): It seems that the effect of peeling and sounding was small due to the characteristics of the nonwoven fabric itself, which is a bundle of fibers having no directionality.

  Various intermediate layers as described above are formed between the outer peripheral surface of the glass reinforced fiber solid body (glass fiber solid rod-like body) as the inner layer and the inner peripheral surface of the inner and outer prepreg tapes for the outer layer. As a result, there was a significant improvement in peeling, but the sound was still improved.

3. Test that interposes a densely wound prepreg sheet, not a sheet material, as an intermediate layer interposed between the X-wound spiral body and the solid body

(11) No11 test material (Structure): Here, other things are further wound on the X-wrapped prepreg tape that has been arranged on the outermost side as the outer layer from No1 test cage to No10 test cage. That is, an inner and outer prepreg tape having a width of 5 mm and a thickness of 0.1 mm is wound on the outer peripheral surface of a glass reinforced fiber solid body as an inner layer with a pitch of 15 mm, and a glass fiber fabric is wound on the X-wrapped tape. Is different.
(Result): In this case, there was also the generation of peeling and the generation of sound, and part of the peeled X-wrapped prepreg tape was exposed on the fabric.
(Consideration): Even if a glass fiber woven fabric was applied on the X-wrapped tape, the result was the same as in the case of No. 1 test cage, and the effect of applying the woven fabric was small.

(12) No12 test material: Here, the glass fabric applied to the outside of the No11 test cage was changed to a non-woven fabric.
(Result): In this case, there is also the generation of sound as well as peeling.
(Consideration): Even if a glass fiber woven fabric was applied on the X-wrapped tape, the result was the same as in the case of No. 1 test cage, and the effect of applying the woven fabric was small.

(13) No. 13 test material (Structure): A single fiber-shaped single body in which carbon fibers as an intermediate layer are aligned in the longitudinal direction on the outer peripheral surface of a glass-reinforced fiber solid body as an inner layer, and the resin is melted to form a tape. A prepreg tape (5 mm width, 0.1 m thickness) for an intermediate layer is wound only one layer spirally over the entire length of the rod axis, and an outer layer having a width of 5 mm and a thickness of 0.05 mm is formed on the outer peripheral surface thereof. Tests were performed using X and W prepreg tapes having a pitch of 15 mm (see FIG. 5 for the X winding).
(Result): A part of the prepreg tape was peeled off, but there was a loud sound on the tip side.
(Consideration): In the background in which such a peeling phenomenon is suppressed, it is large that an intermediate layer prepreg tape is inserted between the outer layer X-wrapped prepreg tape and the inner layer solid body.

(14) No14 test material (Structure): An outer and outer prepreg tape having a width of 5 mm and a thickness of 0.01 mm as an outer layer, wound in an X-winding manner at a pitch of 20 mm, on the outer peripheral surface of a glass reinforced fiber solid body as an inner layer And tested (see FIG. 5 for volume X).
(Result): A part of the prepreg tape was peeled off from the solid body, but not so much, and there was a large noise on the tip side.
(Consideration): It is considered that both the peeling and the sounding are suppressed because the pitch of the X winding is about 5 mm larger than that of the No3 test material.

(15) No. 15 test material (Structure): A single fiber-shaped single body in which carbon fibers as an intermediate layer are aligned in the longitudinal direction on the outer peripheral surface of a glass reinforced fiber solid body as an inner layer, and the resin is melted to form a tape. A prepreg tape for intermediate layer (5mm wide, 0.02m thick: length that does not reach the tip) is spiraled along the rod axis from the tip of the inner layer to the butt end by a length L1 to the butt end The test was performed using a 5 mm wide and 0.05 mm thick inner / outer prepreg tape wound on the outer peripheral surface of the inner and outer prepreg tapes at a pitch of 15 mm (see FIG. 5 for the X winding).
(Result): Peeling was suppressed, and sounding stopped.
(Discussion): The prepreg tape inserted as an intermediate layer is considered to be sufficiently used.

  The above-described configuration was derived by fully considering the test results as described above.

[Another embodiment]
(1) As shown in FIG. 7, the closely wound spiral body as the intermediate layer 7 may take the following form. The lower prepreg tape 10A is spirally wound around the solid rod-like body 6 serving as the inner layer along the axial direction. The spirally wound state is a close contact state in which the side ends of adjacent portions in the narrow width direction of the prepreg tape 10A wound around the solid rod-like body 6 are in contact with each other to form a densely wound spiral body for one layer. To do. Thereafter, the upper prepreg tape 10B is further spirally wound along the axial direction around the solid rod-like body 6 around which the lower prepreg tape 10A is wound. The spirally wound state forms a closely wound spiral body of two layers as a close contact state in which the side ends of adjacent portions in the narrow width direction of the wound upper prepreg tape 10B are in contact with each other. When the first layer of the spirally wound spiral body and the second layer of the spirally wound spiral body are wound, when viewed in a direction perpendicular to the rod axis, the first layer and the second layer are, as illustrated, the rod axis X Are wound so as to intersect at winding lead angles Θ _{3 and} Θ ₄ .
Thus, by forming two layers of closely wound spiral bodies as the intermediate layer, a fishing rod with high bending strength and high torsional strength, or a long rod can be formed. In particular, in the case of drawing a spiral in which the winding direction of the upper prepreg tape 10B and the lower prepreg tape 10A is reversed, a long rod having higher resistance against the torsional force from the left and right is provided. it can.
(2) Although the present invention has been described with respect to fishing rods, it can also be used for bicycle frames, golf shafts, and the like.

  The present invention proposes a long rod that can be used as a rod for fishing large fish such as yellowfin tuna, as a bicycle frame, or as a golf shaft.

6 Inner layer (solid bar)
7 intermediate layer 8 outer layer 10 prepreg tape for intermediate layer 11 prepreg tape for outer layer (outer layer)
11A Inner prepreg tape for outer layer 11B Outer prepreg tape for outer layer L1 Positions spaced apart by a predetermined distance c Carbon reinforcing fiber g Glass reinforcing fiber

Claims (4)

A long rod comprising an inner layer, an intermediate layer located outside the inner layer, and an outer layer outside the intermediate layer,
The inner layer is a solid rod-like body formed by arranging the aligned reinforcing fibers in a direction along the axis of the inner layer and melting the resin in the reinforcing fiber group.
In the intermediate layer, a prepreg tape for a narrow intermediate layer in which reinforcing fibers are aligned along the longitudinal direction is spirally wound along the axial direction in a state where the ends in the narrow width direction are in close contact with each other. Is a close contact spiral formed,
The outer layer is an inner layer for a narrow outer layer that is formed by aligning reinforcing fibers along the longitudinal direction and spirally winding along the axial direction with a constant helical interval in the axial direction. An outer prepreg for a narrow outer layer, in which reinforced fibers are aligned along the longitudinal direction, and the prepreg tape is wound spirally along the axial direction with a constant helical interval in the axial direction. A long rod which is an X wound spiral body in which the reinforcing fibers of the inner and outer prepreg tapes for these outer layers are wound so as to intersect each other in the radial direction.   The long rod according to claim 1, wherein the outer layer is formed over the entire length of the axial length of the long rod.   The long intermediate layer according to claim 1 or 2, wherein the intermediate layer has a spiral winding start point of the intermediate layer prepreg tape set at a position spaced apart from the tip of the inner layer by a fixed distance. rod.   The long reinforcing fiber according to any one of claims 1 to 3, wherein the reinforcing fibers of the inner layer are reinforcing fibers made of glass, and the reinforcing fibers of the intermediate layer and the outer layer are reinforcing fibers made of carbon. Measure rod.

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