JP2002281869A - Fishing rod - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fishing rod that has high operability with light weight and high strength. SOLUTION: The objective fishing rod A comprises a hollow rod tube 1 made of fiber-reinforced prepreg and a top-tapered fiber-reinforced solid-core rod 2 fixed to the front end of the hollow rod tube 1 where the length of the hollow tube is 30-50% of the whole of the fishing rod. A sheet layer 3 for filling the diameter difference is formed on the front side of the fixing part 1a where the solid-core rod 2 is fixed to the front end of the hollow tube 1, while a sheet layer 4 for reinforcing and rigidity-controlling is formed on the rear side around the outer periphery of the hollow tube 1 where the difference of the elastic modulus between sheet layers 3 and 4 is adjusted within ±15×9.8×10<3> N/mm<2> . The rate of change of rigidity of the solid-core rod 2 is made larger than that of the hollow tube 1 and a first line guide 5 is fixed to the outer periphery of the reinforcing and rigidity-controlling sheet layer 4 on the outside of the fixing part 1a outside the end part of the solid core rod 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved fishing rod which is lightweight, easy to operate, and strong in a fishing rod having a solid front end.

[0002]

2. Description of the Related Art Conventionally, as a fishing rod provided with a solid rod at the front end thereof, for example, a structure disclosed in Japanese Patent Application Laid-Open No. H10-210891 is disclosed. This is a fishing rod in which a portion from the vicinity of the base of the fishing rod to the tip of the fishing rod is formed by the solidified rod, and the solid body is thin and operable. However, since the original side of the solid rod is inserted and fixed to the rear end of the fishing rod, the fishing rod is heavy as a whole, and the solid rod is inserted and fixed only at the front part of the handle, and the rear is hollow and lighter. However, since members such as a grip and a reel sheet are inserted into and fixed to the rod tube in the handle portion, when the fixing portion of the solid rod is formed at the above position, the fixing portions of the members overlap. However, further weight reduction was required because the weight was increased by the polymerization.

[0003]

The problem to be solved is that the fishing rod becomes heavy as a whole since the portion from the base of the fishing rod to the tip of the rod is a solid rod.

An object of the present invention is to provide a fishing rod which is lightweight, has good operability and is strong in view of the above-mentioned drawbacks.

[0005]

In order to solve the above-mentioned problems, the present invention according to the first aspect of the present invention is directed to a hollow rod tube provided with a reel sheet on a base portion side and formed of a fiber reinforced prepreg. A tapered solid rod which is reinforced with reinforcing fibers and has a small diameter toward the tip is fixedly attached, and the hollow rod tube has a length of 30 to 50% of the entire length of the rod body. The gist is to arrange a fishing line guide outside the solid rod.

The present invention according to claim 2 is characterized in that the rate of change of the rigidity of the solid rod is greater than the rate of change of the rigidity of the hollow rod. According to a third aspect of the present invention, a fiber-reinforced prepreg is wound around a fixed portion where a solid rod is fixed to a front end of a hollow rod pipe. According to a fourth aspect of the present invention, the difference between the elastic modulus of the fiber of the fiber reinforced prepreg wound outside and the elastic modulus of the fiber of the solid rod is ± 15 × 9.8 × 10 ³ N / mm ^2. It is intended to be within.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the first aspect of the present invention, since the hollow rod tube 1 is formed to be long, the weight can be reduced. Further, since the first fishing line guide 5 is fixed to the outside of the end of the solid rod 2, breakage of the fishing rod due to concentration of stress on the fishing rod due to the foot end of the first fishing line guide 5 during large bending can be prevented. According to the second aspect of the present invention, since the rigidity of the solid rod 2 serving as the rod tip having the first fishing line guide 5 is smaller than the rigidity of the hollow rod 1 serving as the rod base, throwing by bending at the rod tip is performed. It is easy to operate and it is easy to throw the device at the target position. According to the third aspect of the present invention, the fiber-reinforced prepreg 14 extends around the fixing portion 1a,
By winding 15, the strength of the fixing portion 1 a is increased. According to the fourth aspect of the present invention, the difference between the elastic moduli of the fibers of the fiber reinforced prepregs 14, 15 to be wound is ± 15 × 9.8 × 10
^By setting it within ³ N / mm ² , peeling of the end face can be prevented.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of a fishing rod according to an embodiment of the present invention; FIG. It is explanatory drawing at the time of shaping | molding.

The fishing rod A has a tapered solid rod 2 which is reinforced with a reinforcing fiber and has a small diameter toward the front end, and is fixed to the front end of a hollow rod 1 formed of a fiber reinforced prepreg. Has a length L1 of 30 to 50% of the entire length of the rod body, and the solid rod 2 has a length L2 of 70 to 50% of the entire length of the rod body. The inner diameter of the front end of the hollow rod tube 1 and the outer diameter of the rear end of the solid rod 2 serving as the fixing portion 1a are formed in a tapered shape that increases rearward. A sheet layer 3 for filling a step is provided on the front side of a fixing portion 1a in which a solid rod 2 is fixed to the front end of the hollow rod tube 1.
A reinforcing and rigidity adjusting sheet layer 4 is formed on the outer periphery of the hollow rod tube 1 on the rear side.

The rate of change in rigidity of the solid rod 2 is greater than the rate of change in rigidity of the hollow rod 1. The inner diameter of the front end of the hollow rod tube 1 and the outer diameter of the rear end of the solid rod 2 of the fixing portion 1a are formed in a tapered shape that increases rearward.
When the length L3 of a is 30 to 100 mm, it hardly comes off and the strength is improved. When the outer diameter of the reinforcing and rigidity adjusting sheet layer 4 outside the fixing portion 1a is made the same as the tapered shape of the inner diameter of the front end of the hollow rod 1 and the outer diameter of the rear end of the solid rod 2, Bending balance is improved.

A first fishing line guide 5 is fixed to the outer periphery of the reinforcing and rigidity adjusting sheet layer 4 outside the fixing portion 1a outside the end portion of the solid rod 2. A plurality of intermediate guides 6 are fixed to the outer periphery of the tapered solid rod 2, and a top guide 7 is fixed to the tip. A moving hood 8 with a grip is attached to the outer periphery of the hollow rod tube 1 on the base side, and a reel seat 9, a fixed hood 10, a grip 11, and a tail plug 12 are fixed to the end. A reel leg 13 is mounted on the reel sheet 9.

When the hollow rod tube 1 is formed, a prepreg sheet (not shown) cut into a tape-shaped rectangle is wound around a core metal (not shown) as many times as necessary, and then taped to the outside thereof. It is placed in a heating furnace and is integrally formed by a thermosetting treatment according to a conventional method. The solid rod 2 is integrally formed by directing the reinforcing fibers substantially in the axial direction, impregnating the resin, and performing a thermosetting treatment in accordance with a conventional method. Prepreg
For example, epoxy resin, phenol resin, and polyester resin are used in a sheet in which high-strength fibers such as carbon fiber, glass fiber, aramid fiber, alumina fiber, Keplera fiber, other organic fibers, and inorganic fibers are woven in a lateral direction. And the like are impregnated with a thermosetting synthetic resin.

A sheet layer 3 for filling a step and a fixing portion 1a in front of a fixing portion 1a having a solid rod 2 fixed to the front end of the hollow rod tube 1 are provided.
When the reinforcing and rigidity adjusting sheet layer 4 is formed before and after the step, the fiber reinforced prepreg 14 is wound around the outer periphery of the solid rod 2 and overlaps the end of the fiber reinforced prepreg 14 as shown in FIG. Fiber reinforced prepreg 15
Is wound. When the fiber reinforced prepreg 15 is wound around the outer periphery of the hollow rod tube 1, a metal core 16 is inserted into the hollow rod tube 1, and the fiber reinforced prepregs 14, 15 cut into a tape-shaped rectangle are appropriately formed. After being wound several times,
It is pinged, placed in a heating furnace, and integrally formed by thermosetting according to a conventional method. The fiber reinforced prepregs 14 and 15 are made of a sheet in which high-strength fibers such as carbon fibers, glass fibers, aramid fibers, alumina fibers, Keplera fibers, other organic fibers, and inorganic fibers are woven in the lateral direction, and are made of epoxy resin, phenolic resin, or the like. It is formed by impregnating a thermosetting synthetic resin such as a resin or a polyester resin.

The elastic modulus of the fiber of the fiber reinforced prepreg 15 wound outside the hollow rod 1 and the elastic modulus of the fiber reinforced prepreg 14 wound outside the solid rod 2 are about 40 ×.
9.8 × 10 ³ N / mm ² and the difference is ± 15 × 9.8 ×
Those within 10 ³ N / mm ² are used.

When the fishing rod A is configured as described above, the hollow rod tube 1 is formed to be long, so that the weight can be reduced. Since the first fishing line guide 5 is fixed to the outside of the end of the solid rod 2, breakage of the fishing rod due to concentration of stress on the fishing rod due to the foot end of the first fishing line guide 5 during large bending can be prevented. Since the rigidity of the solid rod 2 serving as the rod tip having the first fishing line guide 5 is smaller than the rigidity of the hollow rod 1 serving as the rod base, the throwing operation by bending at the rod tip can be performed, and the device can be set to the target position. Easy to throw accurately. A fiber-reinforced prepreg 14, before and after the fixing portion 1a,
By winding 15, the strength of the fixing portion 1 a increases. By setting the difference in elastic modulus between the wound fiber-reinforced prepregs 14 and 15 to be within ± 15 × 9.8 × 10 ³ N / mm ² , peeling of the end face can be prevented.

[0016]

The present invention is embodied in the form described above, and has the following effects.

According to the first aspect, since the hollow rod tube is formed to be long, the weight can be reduced. In addition, since the first fishing line guide is fixed to the outside of the end of the solid rod, damage to the fishing rod due to concentration of stress on the fishing rod due to the foot end of the first fishing line guide during large bending can be prevented. According to the second aspect, the rigidity of the solid rod as the rod tip having the first fishing line guide is smaller than the rigidity of the hollow rod as the rod base, so that the throwing operation by bending at the rod tip can be performed, and the device can be set up. It is easy to throw accurately at the target position. Claim 3
Accordingly, the strength of the fixing portion is increased by winding the fiber reinforced prepreg around the fixing portion. According to claim 4,
The difference of the elastic modulus of the fiber of the wound fiber reinforced prepreg is ±
By setting it within 15 × 9.8 × 10 ³ N / mm ² , peeling of the end face can be prevented.

[Brief description of the drawings]

FIG. 1 is a side view of a fishing rod.

FIG. 2 is a sectional side view and a partially enlarged sectional side view of a main part of a fishing rod.

FIG. 3 is an explanatory view when a fishing rod is formed.

[Explanation of symbols]

 A fishing rod 1 hollow rod pipe 1a fixing part 2 solid rod 5 first fishing line guide 14, 15 fiber reinforced prepreg

Claims (4)

[Claims] 1. A tapered solid body having a reel sheet on the base side and formed at the front end of a hollow rod tube formed of a fiber reinforced prepreg and reinforced with reinforcing fibers and having a diameter decreasing toward the tip. While fixing the rod, the hollow rod tube is 30 to 30 mm of the entire length of the rod body.
A fishing rod having a length of 50% and wherein a first fishing line guide is arranged outside the solid rod. 2. The fishing rod according to claim 1, wherein the rate of change of the rigidity of the solid rod is greater than the rate of change of the rigidity of the hollow rod. 3. The fishing rod according to claim 1, wherein a fiber reinforced prepreg is wound around a fixed portion where the solid rod is fixed to the front end of the hollow rod tube. 4. The difference between the modulus of elasticity of a fiber of a fiber reinforced prepreg wound outside and the modulus of elasticity of a fiber of a solid rod is ± 15 ×.
4. The fishing rod according to claim 3, wherein the value is within 9.8 × 10 ³ N / mm ² .