JP2001190185A - Top of fishing rod - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a top of a fishing rod capable of preventing the separation of a wound layer from a rod material, and avoiding the stress concentration generated between these components before it happens. SOLUTION: A rod material 1 is produced by hardening a reinforcing fiber bundle oriented in the shaft direction into a solid state with a synthetic resin, and a prepreg sheet-wound layer 2 is integrally formed in such a manner that reinforcing fibers 2ax are oriented substantially in the direction of the shaft of the rod material 1 over the whole length of the periphery of the rod material 1. A prepreg tape-wound layer 3 consisting of arranged or woven reinforcing fibers are integrally formed in a spiral state on the periphery of the prepreg sheet-wound layer 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tip of a fishing rod.

[0002]

2. Description of the Related Art Generally, the tip of a fishing rod is formed by solidifying a reinforcing fiber bundle oriented in an axial direction into a tapered solid shape with a synthetic resin.
Alternatively, it is formed by grinding a columnar member obtained by solidifying a reinforcing fiber bundle oriented in the axial direction with a synthetic resin into a solid shape into a tapered shape.

However, at the tip of such a tapered solid fishing rod, particularly at the tip obtained by cutting the reinforcing fiber at the tip as in the latter, the tip of the rod can be bent to some extent due to the strong pulling of the fish. If sufficient bending rigidity cannot be obtained, the force for lifting the fish while returning from the bent state (ie, lifting power) is insufficient.

In view of such a problem, it has been conventionally proposed to improve the bending rigidity of a fishing rod by forming a winding layer of a prepreg sheet on the outer periphery of a solid rod material.

For example, Japanese Patent Application Laid-Open No. 57-54543 discloses a tapered tape made by integrally pressing a prepreg obtained by impregnating a synthetic resin into high-strength fibers wound around a cylindrical rod material and pressing and heating the prepreg. The tip of the fishing rod is disclosed (hereinafter, referred to as
"Prior art 1").

[0006] Japanese Patent Publication No. 58-52613 and Japanese Utility Model Laid-Open Publication No. Sho 62-21862 disclose a fiber-reinforced prepreg having an acute-angled tip wound around a tapered rod material. A tip of a fishing rod having a tapered shape is disclosed (hereinafter referred to as “prior art 2”).

Japanese Utility Model Application Laid-Open No. 63-191166 discloses a concentric double structure using a meta-aromatic polyamide fiber as a reinforcing fiber of a core material and a glass fiber as a reinforcing fiber of an outer layer. A tip of a fishing rod having the same is disclosed (hereinafter, referred to as “prior art 3”).

[0008] Japanese Utility Model Publication No. 59-20057 discloses that a prepreg sheet in which a cylindrical rod material is tapered at the tip and a synthetic resin is impregnated with a high-strength fiber wound around an outer periphery of a base is pressurized. A tip of a tapered fishing rod that is heated and integrally joined is disclosed (hereinafter referred to as “prior art 4-1”). In addition, this publication discloses that a cylindrical rod material is tapered, and a carbon prepreg tape in which high-strength fiber is impregnated with a synthetic resin is spirally wound around a root portion of the rod material. There is also disclosed a tip of a tapered fishing rod which is heated and integrally joined (hereinafter referred to as "prior art 4-2").

[0009]

However, simply forming a wound layer of prepreg sheet on the outer periphery of a solid rod material as in the prior art described above can improve the rigidity in the length direction of the rod. Although it can be achieved, the bending rigidity in the length direction when the rod is bent, and the deformation rigidity to the elliptical shape in the radial direction are different between the rod material and the winding layer, so both of these are separated, When the fishing rod is bent, stress concentrates at this peeling position.

Further, as in the prior art 2 and the prior art 4-1, in which the winding layer of the prepreg sheet is formed only in the region from the intermediate portion to the root portion of the solid rod material, the bending when bending is performed. Due to the difference in stiffness, separation occurs at the boundary of the intermediate portion, and the same problem as described above occurs.

Further, as in the prior art 4-2, in the case where the prepreg tape is directly spirally wound around the outer periphery of the rod material and pressurized and heated, only the prepreg tape is integrally joined to the rod material. It is difficult to secure a sufficient amount of synthetic resin, and sufficient bending stiffness cannot be secured with only the rod material, so that both the rod material and the wound layer made of prepreg tape are peeled off and the fishing rod is bent. In this case, stress concentrates at this peeling position.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a fishing rod head capable of preventing peeling of a rod material and a wound layer and avoiding stress concentration occurring between the two.

[0013]

In order to solve the above-mentioned problems, a tip of a fishing rod according to the present invention is a rod obtained by solidifying a reinforcing fiber bundle oriented in an axial direction with a synthetic resin in a solid state. Forming a prepreg sheet winding layer (2) integrally so that the reinforcing fibers (2ax) are substantially oriented in the axial direction of the rod material (1) over the entire length of the outer periphery of the material (1); A prepreg tape wound layer (3) in which reinforcing fibers are aligned or woven is spirally formed integrally on the outer periphery of the prepreg sheet wound layer (2).

According to a second aspect of the present invention, in the tip of the fishing rod according to the first aspect, the rod material (1) is formed in a conical shape.

According to a third aspect of the present invention, in the tip of the fishing rod according to the first or second aspect, the prepreg sheet (2a) forming the prepreg sheet winding layer (2) moves from the tip end toward the root. The winding layer is formed so that the amount of reinforcing fibers in the wound layer gradually increases from the front end to the base.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A tip of a fishing rod according to an embodiment of the present invention will be described below in detail with reference to FIGS.

As shown in FIG. 1, the tip of the fishing rod according to the present invention comprises a rod material 1, a prepreg sheet winding layer 2, and a prepreg tape winding layer 3.

The rod material 1 is formed by solidifying a reinforcing fiber bundle, for example, a glass fiber bundle into a solid rod shape with a synthetic resin. In consideration of the fact that this rod material 1 acts as the base of the tip of a fishing rod, it is needless to say that the rod material 1 has an elongated rod shape, but it is generally desirable that the rod material 1 is formed in a conical shape. FIG. 2A is a partial perspective view of the rod material 1 formed in a conical shape as described above.

As a method for forming the conical rod material 1, any known method can be applied.
A method of solidifying a reinforcing fiber bundle into a tapered solid rod shape with synthetic resin, or a method of solidifying a reinforcing fiber bundle into a cylindrical solid rod shape with synthetic resin, and then subjecting this to grinding to form a tapered solid rod shape Or a method of forming the same.

The prepreg sheet winding layer 2 is formed integrally with the outer periphery of the rod material 1. The reinforcing fibers 2ax in the prepreg sheet winding layer 2 are substantially oriented in the axial direction of the rod material 1. The reinforcing fiber 2ax may be a reinforcing fiber such as carbon, glass, Kevlar or the like used for a normal fishing rod.

The prepreg tape winding layer 3 is formed integrally with the outer periphery of the prepreg sheet winding layer 2. The prepreg tape winding layer 3 is formed by forming a yarn prepreg such as carbon, glass, Kevlar or the like into a narrow woven tape. Here, the main reinforcing fibers of the prepreg tape winding layer 3 are oriented in the circumferential direction of the tip.

Next, a method of manufacturing the tip of a fishing rod according to the present invention will be described. First, a trapezoidal prepreg sheet 2a shown in FIG. 2B for forming the prepreg sheet winding layer 2 is wound around the outer circumference of the rod material 1 by one ply over its entire length. . The reinforcing fibers 2ax of the prepreg sheet 2a are substantially oriented in the axial direction of the rod material 1. The prepreg sheet 2a is formed such that the width of the prepreg sheet 2a is gradually increased from the leading end toward the base, and the amount of reinforcing fibers in the prepreg sheet winding layer 2 is gradually increased from the leading end toward the base. I have.

Next, as shown in FIG. 3, a prepreg tape 3a for forming a prepreg tape winding layer 3 is spirally wound in one direction on the outer periphery of the wound prepreg sheet 2a to form a rod-shaped winding. Prepare cadaver. In this winding step, the prepreg tape 3a is wound in a state where its side portions are in close contact with each other so that the wound prepreg sheet 2a is not exposed. This prepreg tape 3a
Is formed by aligning or weaving reinforcing fibers. The direction of orientation of the reinforcing fibers is determined according to the characteristics of the head to be manufactured.

Next, the rod-shaped wound body prepared as described above is pressed and fired. By this pressing and firing step, the prepreg sheet 2a is integrated with the outer periphery of the rod material 1 to form the prepreg sheet winding layer 2, and further, the prepreg tape 3a is integrated with the outer periphery of the prepreg sheet winding layer 2. The prepreg tape winding layer 3 is formed.
Thus, the tip of the fishing rod of the present invention is obtained.

In the above-described embodiment, the prepreg sheet 2a is wound around the outer periphery of the rod material 1 by one ply over the entire length, but it is necessary to increase the rigidity in the length direction of the ear tip. In this case, the prepreg sheet 2 a may be wound around the outer periphery of the rod material 1 in a plurality of plies. Here, the prepreg sheet 2a is gradually cut from the front end to the base so that the amount of reinforcing fibers in the prepreg sheet winding layer 2 gradually increases from the front end to the base, and If the length of at least the wide side portion of the prepreg sheet 2a is longer than the outer circumference at the corresponding position of the rod material 1 and, for example, the former is set to be several times the latter, the number of plies of the prepreg sheet winding layer 2 is increased. From the bottom to the root.

When the prepreg sheet 2a made of a woven fabric is used, the prepreg sheet 2a is wound so that the surface on the side where the exposed area of the reinforcing fiber bundle oriented in the axial direction is large contacts the rod material 1. A large number of circumferentially oriented reinforcing fiber bundles are exposed on the outer peripheral surface of the winding layer 2, and the bonding strength between the prepreg sheet winding layer 2, the rod material 1 and the prepreg tape winding layer 3 is increased. Etc. at the interface can be prevented.

Although the winding step of the prepreg tape 3a has been described as only consisting of the prepreg tape 3a being spirally wound in one direction on the outer periphery of the wound prepreg sheet 2a, the winding of the prepreg tape 3a has been described. Thereafter, another prepreg tape 3a may be wound in a direction intersecting with the above-described winding direction. According to this structure, the torsional rigidity not only in one direction in the circumferential direction of the tip but also in the other direction can be improved, and a tip balanced in torsion can be obtained.

The winding step of the prepreg tape 3a has been described as winding the prepreg tape 3a in a state where the sides thereof are in close contact with each other so that the wound prepreg sheet 2a is not exposed. However, depending on the rigidity accompanying the diameter change of the tip or the required torsional rigidity, the prepreg tape 3a is wound so that the side portions thereof are overlapped with each other, or the prepreg tape 3a is roughly wound, The prepreg sheet 2a may be exposed from the adjacent side. Further, the winding method may be changed in a specific portion of the ear tip. For example, in the root portion, the side portions of the prepreg tape 3a are overlapped with each other, and in the intermediate portion, the side portions of the prepreg tape 3a are connected with each other. And at the tip, prepreg tape 3
a may be roughly wound to expose the prepreg sheet 2a from the adjacent side. Also, prepreg tape 3
The winding pitch of a may be changed according to required characteristics, for example, bending stiffness, torsional stiffness, or stiffness accompanying a change in diameter of the tip. As an example of this, at the base of the tip, the winding pitch of the prepreg tape 3a may be reduced, and the winding pitch may be sequentially increased toward the tip.

In the winding step of the prepreg sheet 2a, the same or the same synthetic resin as the synthetic resin impregnated in the prepreg sheet 2a is applied to the outer peripheral surface of the rod material 1, and the rod material 1 and the prepreg sheet 2a are Can be improved. In the step of winding the prepreg tape 3a, the same or the same synthetic resin as the synthetic resin impregnated in the prepreg tape 3a is applied to the outer peripheral surface of the wound prepreg sheet 2a to form the prepreg sheet 2a. It is also possible to improve the bonding force with the prepreg tape 3a.

[0030]

According to the first aspect of the present invention, the prepreg sheet is wound so that the reinforcing fibers are oriented substantially in the axial direction of the rod material over the entire length of the outer periphery of the rod material. The layer is integrally formed, and the outer periphery of the prepreg sheet winding layer, the prepreg tape winding layer in which reinforcing fibers are aligned or woven are integrally formed in a spiral, so in the prepreg sheet winding layer, The bending rigidity is improved by the reinforcing fibers oriented in the axial direction of the rod material, and both the prepreg sheet winding layer and the prepreg tape winding layer improve the rigidity in the length direction and torsion direction of the tip, and Lifting power can be secured.

The prepreg tape winding layer integrally formed on the outer periphery of the prepreg sheet winding layer reduces the bending rigidity in the length direction and the rigidity of the spike in the radial direction when the tip is bent. Can be reinforced.

Since the prepreg tape is wound around the outer circumference of the rod material through a prepreg sheet winding layer, the prepreg tape is integrally bonded to the rod material in combination with the synthetic resin impregnated in the prepreg sheet. Can be done, and
Peeling at the interface between the prepreg sheet winding layer and the prepreg tape winding layer can be prevented.

In the tip of a fishing rod according to the present invention, if the rod material is formed in a conical shape as described in claim 2, the tip of the fishing rod with a pre-tune can be designed and manufactured very easily.

In the tip of the fishing rod of the present invention, as described in claim 3, the prepreg sheet forming the prepreg sheet winding layer is gradually cut from the front end portion to the root portion, and the prepreg sheet is cut in the winding layer. If the amount of reinforcing fiber is gradually increased from the tip toward the root, the bending stiffness is gradually reduced from the root toward the tip.・ Can be manufactured.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a tip of a fishing rod of the present invention.

FIG. 2 is a view showing a rod material and a prepreg sheet used for manufacturing a tip of a fishing rod according to the present invention.

FIG. 3 is a view showing a manufacturing process of a tip of a fishing rod according to the present invention.

[Explanation of symbols]

 Reference Signs List 1 rod material 2 prepreg sheet winding layer 2a prepreg sheet 2ax reinforcing fiber 3 prepreg tape winding layer 3a prepreg tape

Claims (3)

[Claims] The reinforcing fibers are substantially oriented in the axial direction of the rod material over the entire length of the outer periphery of the rod material obtained by solidifying the reinforcing fiber bundle oriented in the axial direction with a synthetic resin in a solid state. The prepreg sheet wound layer is formed integrally as described above, and a prepreg tape wound layer in which reinforcing fibers are aligned or woven is formed integrally in a spiral shape on the outer periphery of the prepreg sheet wound layer. The tip of a fishing rod to do. 2. The tip of a fishing rod according to claim 1, wherein said rod material is formed in a conical shape. 3. The prepreg sheet forming the prepreg sheet wound layer is gradually cut from the leading end toward the root, and the amount of reinforcing fibers in the winding layer is gradually reduced from the leading end toward the root. The tip of a fishing rod according to claim 1 or 2, wherein the tip of the fishing rod is formed so as to increase.