JPH1175630A - Fishing rod - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fishing rod capable of being largely bent without being damaged. SOLUTION: This fishing rod comprises a rod tube of a synthetic resin as the matrix reinforced with fibers, mainly of carbon fibers S1 and S2 of almost the same quantity, and glass fibers S3 and S4 outside of the carbon fibers S1 and S2, wherein the layer of the fibers S1 is slanted at approximately 45 deg.±15 deg. to the rod axis (first direction), the layer of the fibers S2 is slanted almost symmetrically with the layer of the fibers S1 around the rod axis (second direction), the fabric of the glass fibers S3 is directed almost along the rod axis direction, and the layer of the fibers S4 is directed almost circumferentially around the rod.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a highly flexible fishing rod including a through fishing rod. Also applies to solid ears.

[0002]

2. Description of the Related Art Each fishing rod has a hard tone as a whole, a soft tone as a whole, a soft tone at a tip, according to its design concept.
There are types such as soft tone of the torso. In such a situation, there is a case where the tip portion or the trunk portion is required to be particularly greatly bent.

[0003]

However, if the rod is greatly bent, one side in the radial direction of the rod pipe is greatly stretched, and the other side is strongly compressed. Therefore, on the side where the fiber is greatly stretched, peeling is likely to occur between the reinforcing fibers oriented in the circumferential direction, and the crush resistance of the rod pipe is reduced. On the side where the fiber is strongly compressed, the axial length reinforcing fiber is not seated. Easy to succumb. Therefore, the rod tube may be crushed or buckled before obtaining sufficient deflection. Further, simply increasing the synthetic resin material of the rod or simply reducing the wall thickness of the rod tube for the purpose of lowering the bending rigidity causes insufficient strength of the rod, and similarly easily causes crushing and buckling. Since the inside fishing rod has a structure in which the fishing line is inserted inside, the outer diameter of the spike rod in particular cannot be reduced to a certain extent. Therefore, there is a problem in that the bending rigidity of the spike is inevitably increased, and it is difficult to obtain desired bending performance.

Accordingly, an object of the present invention is to provide a fishing rod which can be largely bent while preventing breakage.

[0005]

SUMMARY OF THE INVENTION In view of the above-mentioned object, the present invention relates to a fishing rod having a rod tube reinforced with a reinforcing fiber using a synthetic resin as a matrix, wherein the direction of the carbon fiber is mainly in the axial direction of the rod. An inclined fiber oriented in a first direction inclined within a range of approximately 45 degrees ± 15 degrees with respect to the first direction, and a carbon inclined fiber oriented in a second direction substantially symmetric to the inclined fiber with respect to the axial direction. An inclined fiber layer having approximately the same degree,
A glass fiber layer disposed outside the inclined fiber layer, wherein the glass fiber in one direction of the glass fiber woven fabric is oriented substantially in the axial direction, and the glass fiber in the other direction is oriented substantially in the circumferential direction. A fishing rod characterized by having a rod tube area provided.

[0006] The inclined fiber of the inclined fiber layer has a component in the axial direction, which serves as resistance against separation between the fibers when the rod is bent. With the inclination angle of, the contribution to the bending rigidity when the rod is bent is small, and the flexibility of the rod can be maintained. The inclined fiber also has a component in the circumferential direction, and due to this component, the fiber has a strength against collapse of the rod pipe. In addition, the presence of the inclined fiber is strong against torsion, and the strength is particularly improved in a portion having a large amount of torsion such as a spikestick. Furthermore, if the rod is only flexible, the plastic deformation may bend when the rod is greatly bent.However, since the woven fabric layer having the glass fibers in the axial direction is provided, a moderate bending due to the presence of fibers oriented in the axial direction is provided. Since the rigidity and the fibers are glass fibers having high elongation and high compressive buckling strength, plastic deformation bending can be suppressed. In addition, the circumferential glass fiber of the woven fabric contributes to the prevention of crushing in the case of a rod tube, and because of the woven fabric incorporating the axial length fiber, peeling between the circumferential glass fibers at the time of large bending. Is prevented. Since the glass fiber woven prepreg is outside the inclined fiber prepreg, the rod pipe requires a smaller amount of fiber in order to obtain the same flexural rigidity as compared to the case where it is present inside, and can contribute to weight reduction.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in more detail with reference to an embodiment shown in the accompanying drawings. FIG. 1 is a view for explaining a method of manufacturing a rod tube used for a fishing rod according to the present invention.
A first prepreg P having a trapezoidal shape is attached to a tapered core metal 10.
1 and then a trapezoidal second prepreg P2. The first prepreg is wound so that the directional direction of the reinforcing fiber S1 is inclined by an angle θ with respect to the axial direction of the cored bar,
The second prepreg is wound so that the reinforcing fibers S2 are directed in a direction substantially symmetric to the reinforcing fibers S1 of the first prepreg with respect to the axial direction of the core metal. Furthermore, each of the first and second prepregs has the same type of reinforcing fiber at the same density and is substantially the same size. The point is to provide a rod tube that is mechanically symmetrical with respect to the axial direction, and to prevent unevenness in the deformation of the rod due to thermal stress at the time of manufacturing and load during fishing.

The reinforcing fibers S1 and S2 are both carbon fibers having a longitudinal elastic modulus of 24 ton / mm ² . In this way, the prepregs P1 and P2 are wound, and then the woven prepreg P3 of glass fiber is wound. Glass fiber S in one direction
3 is wound in the axial direction of the cored bar. The glass fiber S4 in the other direction is directed in the circumferential direction. The resin impregnated in each prepreg is, for example, an epoxy resin. The inclination angle θ is preferably in a range of approximately 45 degrees ± 15 degrees. This is the inclination angle θ of the carbon fiber.
Is a tilt angle range in which the strain until plastic deformation starts to increase is confirmed by a tensile test of the laminated plate in which is set to various values.

The rod tube formed in three layers in this way can be largely bent. That is, since the inner two layers of the reinforcing fibers are inclined, the contribution to the bending rigidity of the rod pipe is small, and since the reinforcing fibers have a circumferential component, they are resistant to the collapse of the rod pipe. In addition, the separation between the inclined fibers is prevented due to the presence of the axial component, and the crush resistance can be maintained. The presence of the fibers in the axial direction of the layer of the glass fiber woven fabric prevents plastic deformation and bending of the rod tube, and also reduces the bending resistance due to the use of glass fibers instead of carbon fibers. Furthermore, the presence of the circumferential fibers in the layer of the glass fiber woven fabric increases the crush resistance, and the woven fabric combined with the axial length fibers prevents peeling between the circumferential glass fibers at the time of large bending. Is done. In addition, the presence of the inclined fibers results in a rod tube that is resistant to twisting.

In the above-mentioned glass fiber woven prepreg P3, if the ratio of the circumferential fibers S4 is increased, the tone becomes softer,
If the ratio of the axial length fiber S3 is increased, the hardness becomes higher. Further, instead of a woven fabric, a prepreg in which aligned fiber groups in both directions are overlapped may be used, but a woven fabric is preferable. Alternatively, the reinforced fiber may be a drawn prepreg composed of only the axial length glass fiber S3. In this case, the glass fiber S3 contributes to prevention of plastic deformation, and the durability against crushing is imparted by the inclined fiber. Further, when the reinforcing fiber is a aligned prepreg composed of only the circumferential glass fiber S4, the glass fiber S4 contributes to the prevention of crushing, and the plastic deformation is prevented by the axial length component of the inclined fiber. . Therefore, in the former, a layer of carbon fiber or the like oriented substantially in the circumferential direction is added to impart durability to crushing, and in the latter, the layer of carbon fiber or the like oriented in the axial direction is kept as inward as possible. It is also possible to provide a structure that is additionally disposed on the peripheral side to prevent plastic deformation.

Further, instead of overlapping the prepregs P1 and P2 of the inclined fibers, the two intersecting fiber groups may be overlapped or woven as a single prepreg, but two unidirectionally drawn prepregs may be used. An aligned prepreg sheet or a prepreg sheet in which a group of fibers is stacked is preferable. Also, prepreg P1,
The reinforcing fiber of P2 or the prepreg of the cross fiber group may be a carbon fiber having another elastic modulus or a glass fiber. The use of reinforcing fibers having a low modulus of elasticity, such as glass fibers, further improves the flexibility of the rod tube.

The fact that the rod pipe having the above structure is suitable for large bending is as follows.
It has been confirmed by the following experiment. That is, the inner diameter is set to 3.
Three types of cylindrical test specimens having a length of 8 mm and a length of 500 mm were prepared. As the prepreg of the inclined fiber of each test piece, one prepreg in which the two fiber groups are overlapped with each other is used instead of the prepregs P1 and P2 in FIG. 1, and the fiber has a longitudinal elastic modulus of 24 ton / mm. The carbon fiber of No. ² is used, the resin is an epoxy resin, and the volume ratio of the carbon fiber in the prepreg is 40.8%. The prepreg (thickness: 0.052 mm) is formed by winding the following prepreg on a layer obtained by winding the prepreg four times.

The specimen 1 has carbon fibers having the same longitudinal elastic modulus as described above, and the volume ratio of the carbon fibers is 46.6%.
Was wrapped twice so that the fiber was directed in the axial direction. as a result,
The outer diameter becomes 4.38 mm, and the volume ratio between fibers is
75% inclined carbon fiber, 2 carbon fibers in the axial direction
5%. Specimen 2 was made of prepreg P3 shown in FIG.
A prepreg having a thickness of 0.017 mm and a glass fiber volume ratio of 56.7%, and having the same ratio of the axial length fiber and the circumferential direction fiber, was wound four times. As a result, the outer diameter becomes 4.44 mm, and the volume ratio between the fibers is 75% for the graded carbon fiber and 25% for the glass fiber.
%. Specimen 3 was prepared by arranging carbon fibers having the same longitudinal elastic modulus as above, and prepreg (thickness: 0.033 mm) having a volume ratio of carbon fibers of 46.6% by directing the fibers in the circumferential direction. Wound. As a result, the outer diameter becomes 4.38 mm, and the volume ratio between the fibers is 75% for the inclined carbon fibers and 25% for the circumferential carbon fibers.

As a result of the bending test of each of the test pieces, the relative ratio of the maximum bending and the relative ratio of the bending rigidity until breaking are as follows. Specimen No. 1 2 3 Relative ratio of flexure amount 42 56 38 Relative ratio of flexural rigidity 3.52 1.64 1.62 Therefore, Specimen 2 has the largest flexure amount, and thus meets the purpose of the present application. In addition, the bending rigidity is considerably smaller than that of the test piece 1 and is easily bent. The test body 3 has the smallest bending stiffness and the smallest bending amount despite being easy to bend. This indicates that it was broken while the deflection was small.

With respect to the total amount of the fiber amount of the inclined fiber layer (the amount of the inclined fiber) and the fiber amount of the glass fiber layer (the amount of the glass fiber),
The volume ratio of the amount of glass fiber is preferably about 10 to 60%. When the volume ratio of the glass fiber amount is about 50%, plastic deformation of the rod tube at the time of large bending is easily prevented, and when the glass fiber amount is about 20% (the inclined fiber amount is about 80%), the bending can be maximized.
For further softening, the fiber angle θ of the inclined fiber layer may be set to about 50 to 75 degrees.

The amount of synthetic resin of the prepreg forming the rod pipe is centered on 50 wt% in the prepreg of the inclined fiber layer.
The range of 30 to 60 wt% is preferred. In the glass fiber layer, a range of 20 to 50% by weight centering on 30% by weight is preferable. By making the resin ratio of the inclined fiber layer higher than that of the glass fiber layer, production can be facilitated, the condition of the rod tube can be made softer, and the durability against large bending can be improved. To make the tone harder, the relationship between the resin ratios is reversed. When the resin ratio of the entire molded rod tube is set to 50 wt% or less, weight reduction can be achieved. Further, the resin ratio of the inclined fiber layer after molding and the resin ratio of the glass fiber layer are substantially the same (the difference is ± 1).
(Up to about 0 wt%).

The carbon fiber of the inclined fiber layer has an elastic modulus of 1
Although the thing of the range of 0-60 ton / mm < ² > is used, Preferably it is 20-40 ton / mm < ² >. 10
For carbon fibers ton / mm less than ^{2 (1~10ton} / mm ^2), may be used in the axial direction instead of the gradient fiber layer. Glass fiber may be used for the inclined fiber layer, but it becomes heavier than carbon fiber. In addition, the strength can be improved by using boron fiber or ceramic fiber.

In the layers described as glass fiber layers, organic fibers such as aramid fibers and polyetherimide fibers may be combined with glass fibers to reduce the weight. Further, a combination of glass fiber and carbon fiber may be used, and in this case, it is preferable that the carbon fiber is directed in the circumferential direction. Further, in the above description, the glass fiber layer is provided outside the inclined fiber layer, because the plastic deformation bending of the rod pipe can be most prevented. If the glass fiber layer is set inside the inclined fiber layer, the elongation of the rod pipe is maximized.
If the glass fiber layer is provided inside and outside the inclined fiber layer, the effect of buckling reinforcement, the effect of preventing plastic deformation and bending, and the effect of preventing crushing can be obtained even when the thickness is reduced.

The thickness of each rod tube is 0.03 m.
m or less, a prepreg sheet in which a glass fiber woven fabric and a aligned carbon fiber sheet are superimposed may be wound around a cored bar to form a rod tube. In this case, the glass fibers in one direction of the woven fabric are oriented in the axial direction, and the carbon fibers are oriented in the circumferential direction. In this case, the volume ratio between the carbon fiber amount and the glass fiber amount is the same as that in the case where the inclined fiber amount in paragraph number 0015 corresponds to the carbon fiber amount here.

FIG. 2 shows a method of manufacturing another form of a rod used for the fishing rod according to the present invention. A rectangular prepreg P in which carbon fibers are inclined at an angle θ on the front side of the cored bar
1 ′, and a rectangular prepreg P2 ′ having carbon fibers as reinforcing fibers is wound thereon from above inclining in a direction symmetric to the carbon fibers. Thus, an inclined fiber layer is formed, and a woven prepreg P3 ′ made of glass fiber is formed thereon,
The glass fiber is wound so that the glass fiber in one direction is directed in the axial direction. A carbon fiber aligned rectangular prepreg P4 is wound around the latter half of the prepreg P3 'while being overlapped with the latter half of the core metal. Furthermore, prepreg P4
Alignment rectangular prepreg P5 of carbon fiber shorter than
Is wound.

The rod tube thus formed has high flexibility at the front portion, high bending rigidity at the rear portion, and low flexibility at the front portion. As described above, the configuration of the present application may be applied to a partial area of the rod pipe, or may be applied to one rod pipe as a whole. Further, the present invention is not limited to the head rod, but may be a middle rod or a former rod. By providing a large-flexible part on the torso of the fishing rod, such as the middle rod and the former rod, when catching a big fish, the distance from the grip part to the rod tip position is shortened, and the moment load on the hand is reduced. Fishing becomes easier.

Without being limited to the above embodiment, an example of a rod pipe structure capable of large bending will be described with reference to FIG.
The prepreg is wound in the order of S1, S2, S3, and S4. The number of turns of each rectangular prepreg is determined based on the fact that the diameter D of the core 10 having almost no taper is 3.8 mm, as described below. It can be seen from the width dimension. However, the number of turns is one example, and the present invention is not limited to this. The resin of each prepreg is an epoxy resin, and the longitudinal elastic modulus of the carbon fiber is, for example, 24 ton / mm ² unless otherwise specified. However, in the claim configuration corresponding to each type, the carbon fiber of the following inclined fiber prepreg is , Elastic modulus is 10 to 60 ton / mm ²
Is used, but preferably 20 to 40 to
n / mm ² , and there is no limitation on the elastic modulus of other unspecified carbon fibers.

(Type H) Prepregs S1, S2, S3
Use The width dimension B1, B2, B3 of each prepreg is 37, 40, 55 mm. The prepreg S1 is a prepreg in which a group of fibers aligned substantially in the axial direction and a group of fibers aligned substantially in the circumferential direction are superimposed on each other with the respective fiber amounts being substantially equal to each other. (Hereinafter referred to as C / C prepreg). The prepreg S2 is, for example, approximately 45 degrees inclined with respect to the axial direction when the carbon fiber is used for winding around the core metal, and generally has a tilt of approximately 4 degrees.
A prepreg (hereinafter referred to as a carbon bias prepreg) in which another aligned fiber group inclined in a direction substantially symmetric with respect to the axial direction is superimposed on a aligned fiber group inclined within a range of 5 ° ± 15 ° It should be noted that instead of overlapping prepregs like this carbon bias prepreg,
Woven woven fabrics may be used, and two prepregs P1 and P2 may be used as in the embodiment of FIG. 1 which can perform an alternative action to these woven fabrics.
Hereinafter, it is referred to as an inclined fiber prepreg. That is, this prepreg can constitute the inclined fiber layer of the first aspect. ). The prepreg S3 is used in a state of being wound around a metal core,
Woven prepreg made of glass fibers having approximately the same amount of fiber in the axial direction and circumferential direction (hereinafter referred to as glass woven prepreg, but not woven, but referred to as glass prepreg, including prepreg obtained by laminating aligned fiber groups) ).

The claimed structure of the type H is as follows. What is claimed is: 1. A fishing rod having a rod tube reinforced with a reinforcing fiber using a synthetic resin as a matrix, comprising: a layer of a C / C prepreg; a layer of an inclined fiber prepreg on the layer; and a layer of a glass prepreg on the layer. A fishing rod characterized by having a rod tube region provided with: Regarding the function and effect, the function and effect brought by are the same as those in claim 1,
Accordingly, an operational effect that can additionally adjust the bending rigidity of the rod tube and the durability against crushing is added. Is located on the inner circumferential side, the influence of the presence of the carbon fibers in the axial direction on the bending rigidity of the rod tube is small.

(Type I) Prepregs S1, S2, S
3, S4 is used. Width B1, B of each prepreg
2, B3 and B4 are 24, 38, 40 and 28 mm.
The prepreg S1 is a glass woven prepreg. The prepreg S2 is a C / C prepreg. Prepreg S
3 is a carbon bias prepreg. The prepreg S4 is a glass woven prepreg.

The claims of the type I are as follows. A fishing rod having a rod tube reinforced with a reinforcing fiber using a synthetic resin as a matrix, comprising: a layer of a glass prepreg; a layer of a C / C prepreg on the layer; and a layer of an inclined fiber prepreg on the layer. And a rod region comprising a layer of glass prepreg on said layer. Regarding the function and effect, the function and effect brought about are the same as those of the first aspect, but the function and effect that can additionally adjust the bending rigidity of the rod tube and the durability against crushing are added. Is near the innermost layer, the influence of the presence of the carbon fibers in the axial direction on the bending rigidity of the rod tube is small.

(Type F) Prepregs S1 and S2 are used. Width B1, B2 of each prepreg is 76, 54m
m. The prepreg S1 is a carbon fiber prepreg (alternative action of a carbon bias prepreg) having a longitudinal elastic modulus of 1 ton / mm ² aligned in the axial direction. The prepreg S2 is a glass woven prepreg.

The claimed structure of the type F is as follows. A fishing rod having a rod tube reinforced with reinforcing fibers using a synthetic resin as a matrix, wherein a longitudinal elastic modulus is approximately 0.5 to 5 ton / mm ² , and a layer of carbon fiber prepreg is aligned in the axial direction, A fishing rod comprising a rod tube region having a layer of glass prepreg on said layer. The functions and effects are the same as those of the first aspect. This is because the small flexural rigidity provided by this layer can be considered to be similar to the small flexural rigidity provided by the inclined fiber layer of claim 1.

(Type G) Prepregs S1, S2, S3
Use The width dimension B1, B2, B3 of each prepreg is 37, 40, 28 mm. The prepreg S1 is C /
C prepreg. The prepreg S2 is a carbon bias prepreg. The prepreg S3 is a prepreg of carbon fibers aligned in the circumferential direction.

The claimed structure of the type G is as follows. A fishing rod having a rod tube reinforced with a reinforcing fiber using a synthetic resin as a matrix, wherein a layer of a C / C prepreg, a layer of an inclined fiber prepreg is formed on the layer, and circumferentially aligned on the layer. A fishing rod comprising a rod tube region having a layer of carbon fiber prepreg. Regarding the function and effect, the fiber in the axial direction has the effect of improving the bending rigidity of the rod pipe and preventing plastic deformation bending of the rod pipe, but since it is the inner layer, the contribution to the bending rigidity of the rod pipe is It is small and does not become a major obstacle to improving the flexibility. In addition, although it has durability against crushing due to the presence of the circumferential fibers, since it is an inner layer, the durability against crushing is small, and there is a layer for reinforcing this. Is claim 1
The same operation and effect as those of the inclined fiber layer are obtained.

(Type E) Prepregs S1 and S2 are used. Width B1, B2 of each prepreg is 76, 27m
m. The prepreg S1 is a carbon fiber prepreg having a longitudinal elastic modulus of 1 ton / mm ² , aligned in the axial direction. The prepreg S2 is a prepreg of carbon fibers aligned in the circumferential direction.

The claimed structure of the type E is as follows. A fishing rod having a rod tube reinforced with reinforcing fibers using a synthetic resin as a matrix, wherein a longitudinal elastic modulus is approximately 0.5 to 5 ton / mm ² , and a layer of carbon fiber prepreg is aligned in the axial direction, A fishing rod characterized by having a rod tube region provided with a layer of a prepreg of carbon fibers aligned circumferentially on the layer. Regarding the function and effect, since the layer has a small longitudinal elastic modulus of the fiber and is located on the inner layer, it does not greatly improve the bending rigidity of the rod pipe, and can prevent plastic deformation bending of the rod pipe. Provides durability against collapsing the rod tube.

As in each of the above types, in addition to the inclined fiber prepreg and the glass prepreg, a C / C prepreg or a carbon fiber aligned prepreg can be used to balance the improvement in strength and the improvement in rigidity. . C /
In the case of the C prepreg, it is preferable to dispose the carbon fiber in the intermediate layer or the inner layer instead of the outer layer of the rod pipe in order to reduce the influence of the carbon fiber in the axial direction on the bending rigidity of the rod pipe. If carbon fiber prepregs aligned in the circumferential direction are used, the strength against crushing can be improved, and the arrangement position may be the inner layer, the outer layer, or both.

[0034]

As is clear from the above description, according to the present invention, it is possible to provide a fishing rod which can be largely bent while preventing breakage.

[Brief description of the drawings]

FIG. 1 is a diagram showing a method of manufacturing a rod tube used for a fishing rod according to the present invention.

FIG. 2 is a view showing a method of manufacturing a rod tube according to another embodiment of the fishing rod according to the present invention.

FIG. 3 is a view showing a method of manufacturing another form of a rod tube according to the purpose of the present invention.

[Description of Signs] P1, P2 Prepreg for inclined fiber layer P3 Glass fiber woven prepreg S1, S2 Inclined fiber S3 Axial longitudinal glass fiber S4 Circumferential glass fiber

Claims (1)

[Claims] 1. A fishing rod having a rod tube made of a synthetic resin as a matrix and reinforced with reinforcing fibers, wherein the direction of the carbon fibers is substantially 4 to the axial direction of the rod.
An inclined fiber oriented in a first direction inclined within a range of 5 degrees ± 15 degrees and a carbon inclined fiber oriented in a second direction that is generally symmetric with the inclined fiber with respect to the axial length direction are approximately the same. A tilted fiber layer having a glass fiber woven fabric disposed outside the tilted fiber layer, wherein glass fibers in one direction of the glass fiber woven fabric are directed substantially in the axial direction, and glass fibers in the other direction are directed substantially in the circumferential direction. A fishing rod comprising a rod tube region having a glass fiber layer formed thereon.