JPH08289701A - Fishing rod and its production - Google Patents

Abstract

PURPOSE: To obtain a fishing rod high in the mechanical strength of the joint(s), causing no breakage thereof even if highly deflected, and excellent in durability to stand repeated use. CONSTITUTION: This fishing rod has a solid rod 1 with a wrapping region 1a and a hollow rod pipe 2 jointed to the wrapping region of the solid rod and wrapped with a fiber-reinforced prepreg standing cured. In this fishing rod, the wrapping region lies internally threaded into the hollow rod pipe and the solid rod 1 and the hollow rod pipe 2 are monolithically jointed to each other by curing the fiber-reinforced prepreg. The end of the wrapping region side of the solid rod 1 is fitted with a core via a reinforcing member, and the fiber- reinforced prepreg is wrapped from the region to the core followed by curing the resin in the prepreg to joint the solid rod 1 and the hollow rod pipe 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fishing rod, and more particularly to a fishing rod having high strength and excellent durability.

[0002]

2. Description of the Related Art In a fishing rod, the tip portion is required to be soft in tone and yet rigid enough to cope with a large deflection, and the original portion is required to be hard in tone and lightweight. Therefore, in order to satisfy these two requirements, a solid rod is used for the tip rod and a hollow rod tube is used for the main rod.

As a conventional method for joining a solid rod and a hollow rod tube, Japanese Utility Model Publication No. Sho 63-29419 and Japanese Utility Model Publication No.
No. 2670 is disclosed. Specifically,
Japanese Utility Model Publication No. 63-29419 discloses a structure in which a joining member is interposed between a solid rod and a hollow rod tube.
Japanese Utility Model Application Laid-Open No. 5-2670 discloses a structure in which a joining region of a solid rod and a hollow rod tube is formed to have a small diameter, and a connecting member is provided on the joining region.

[0004]

However, in any of the conventional methods for joining a solid rod and a hollow rod tube as described above, any other member (at the joining portion between the solid rod and the hollow rod tube) is used. Since the splicing member and the splicing member are attached by adhesion or the like, if the fishing rod is largely bent, the splicing portion of the fishing rod may be peeled off or other members may be cracked to damage the splicing portion.

Further, when the fishing rod bends, the portion where the end of the other member abuts the hollow rod pipe serves as a fulcrum, and stress concentrates on that portion, which may damage the hollow rod pipe. Furthermore, if another member is present at the joint between the solid rod and the hollow rod pipe, the problem arises that the rigidity balance of the fishing rod is poorly adjusted.

The present invention has been made in view of the above points, and a fishing rod having a high strength at the joint portion, which is not damaged even if it is largely bent, and has excellent durability that can withstand repeated use. The purpose is to provide.

[0007]

The present invention provides a solid rod having a winding region, and a hollow rod tube which is joined to the winding region of the solid rod and is formed by winding and hardening a reinforcing fiber prepreg. Wherein the winding region is inserted into the hollow rod tube, and the solid rod and the hollow rod tube are integrally joined by curing the reinforcing fiber prepreg. To provide fishing rods. In the fishing rod of the present invention, it is preferable that the reinforcing member is arranged at the end of the solid rod inserted in the hollow rod tube.

In the present invention, as the material of the solid rod,
Carbon fiber, glass fiber, aramid fiber and the like can be mentioned. Further, the solid rod can be manufactured by a method such as a method of supplying the above-mentioned material into the cavity of the mold and press-molding. Reinforcing fiber prepreg is carbon fiber,
It refers to one obtained by impregnating a reinforcing fiber such as glass fiber or aramid fiber with a resin such as an epoxy resin, a polyester resin or a phenol resin.

In the present invention, the winding region means a region in which the reinforcing fiber prepreg is wound on the solid rod, and the width of the region is appropriately set according to the joining state of the solid rod and the hollow rod tube. can do.

In the present invention, as the material of the reinforcing member, a material having a lower elastic modulus than the hollow rod tube, for example, a synthetic material such as rubber or plastic, or a natural material such as wood such as bamboo can be used.

Further, according to the present invention, a step of attaching a core bar to the end of the solid rod having a winding area on the side of the winding area through a reinforcing member, and a resin for reinforcing fiber from the winding area to the core bar are provided. A method for manufacturing a fishing rod, comprising: a step of winding an impregnated prepreg; and a step of bonding the solid rod and the hollow rod tube by curing the resin.

[0012]

The fishing rod of the present invention is characterized in that the solid rod and the hollow rod tube are integrally joined by curing the reinforcing fiber prepreg. In the joining portion of the solid rod and the hollow rod tube joined in this way, there is no other member unlike the conventional joining method. Therefore, the stress when the fishing rod is largely bent is not concentrated, and is relatively easily dispersed. For this reason, breakage of the joining portion of the solid rod and the hollow rod tube is prevented, and a large deflection of the fishing rod can be endured. Further, since damage to the joint portion of the solid rod and the hollow rod tube is prevented, it is possible to sufficiently withstand repeated use over a long period of time.

Further, unlike the conventional joining method, since no other member is present, the joint portion can be made smaller and lighter in weight, the joint portion can be prevented from having a large diameter, and the joint portion is extremely swollen. It is excellent in appearance quality with no broken parts.

In the present invention, a reinforcing member is arranged at the end of the solid rod inserted in the hollow rod tube, if necessary. By arranging the reinforcing member, it is possible to reduce stress concentration due to a change in wall thickness at the portion where the end of the solid rod moves to the hollow rod tube. Therefore, the strength of the joint portion between the solid rod and the hollow rod tube can be further increased.

According to the method for manufacturing a fishing rod of the present invention, a core metal is attached to an end of the solid rod having a winding area on the area side via a reinforcing member, and a reinforcing fiber prepreg is wound from the area to the core metal to prepare a prepreg. It is characterized in that the resin is cured and the solid rod and the hollow rod tube are joined.

According to such a process, it is not necessary to dispose or form another member at the joint portion. Therefore, it is possible to efficiently obtain the fishing rod having the joint portion of the solid rod and the hollow rod pipe.

[0017]

Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a cross-sectional view for explaining one embodiment of a fishing rod of the present invention. Reference numeral 1 in the figure denotes a solid rod made of carbon fiber and having a winding region 1a. Solid rod 1
A hollow rod tube 2 is provided on the side of the winding area 1a. That is, the end of the solid rod 1 on the winding region 1a side is inserted in the hollow portion of the hollow rod tube 2. The wall thickness of the hollow rod tube 2 formed on the winding region 1a is the same as that of the other region of the hollow rod pipe 2 from the end on the winding region 1a side to the region of several mm to 1 cm on the solid rod 1 side. It is preferable that the thickness is the same, and the thickness gradually decreases from that region toward the solid rod 1. By setting the wall thickness of the hollow rod tube 2 in this manner, the rigidity balance and strength of the fishing rod can be improved.

A reinforcing member 4 made of an elastic material such as rubber or plastic is attached to the end of the solid rod 1 on the winding region 1a side by adhesion. The reinforcing member 4
As a method of attaching the reinforcing rod 4, a reinforcing member 4 is simply arranged between the solid rod 1 and the core metal, and a reinforcing fiber prepreg is wound on the reinforcing member 4, and a reinforcing member is provided at the end of the solid rod 1 on the winding region 1a side. 4 is temporarily fixed, and the reinforcing fiber prepreg is wound on it. A reinforcing rod prepreg is wound from the winding region 1a of the solid rod 1 to form a hollow rod tube, and then the winding region 1a of the solid rod 1 Reinforcing member 4 at the end
And the like.

The reinforcing member 4 is provided with a recess 4a which is open to the hollow rod tube 2 side. With this recess 4a, the stress concentration at the end of the solid rod 1 on the winding region 1a side can be alleviated further. An auxiliary prepreg 3 is interposed between the inner wall of the hollow rod tube 2 and the reinforcing member 4.
A resin tape may be used instead of the auxiliary prepreg 3.

The fishing rod having the above structure is manufactured as follows. First, as shown in FIG. 2 (A), the reinforcing member 4 is arranged at the large-diameter side end of the solid rod 1 so that the concave portion 4a thereof faces the core metal 5 side. Attach the core metal 5 by sandwiching it. At this time, the surface of the cored bar 5 is preferably coated with a release agent or the like so that the cored bar 5 can be easily pulled out from the hollow rod tube 2. The surface of the core metal 5 and the surface of the solid rod 1 (particularly, the winding region) are coated with a temporary fixing resin, for example, tacking resin (epoxy resin) in order to easily wind the reinforcing fiber prepreg 2a. It is preferable.

In such a state, the auxiliary prepreg 3 is a region including the reinforcing member 4, that is, a region including the large diameter end of the solid rod 1, the reinforcing member 4, and the small diameter end of the cored bar 5. Wrap around. Then, the winding area 1a of the solid rod 1
The reinforcing fiber prepreg 2a is wound from the core metal 5 to the core metal 5. The auxiliary prepreg 3 and the reinforcing fiber prepreg 2
The fiber direction of "a" should be substantially aligned with the axial direction of the solid rod 1 and the cored bar 5.

Then, as shown in FIG. 2B, the solid rod 1, the auxiliary prepreg 3, and the reinforcing fiber prepreg 2a.
The tape 6 is wound on the top of the fishing rod to produce a fishing rod material. After that, a weight of about 300 g is attached to the end of the solid rod 1 on the small diameter side, and the solid rod 1 is placed downward and the heat treatment is performed so that the axial direction is vertical. The resin of the fiber prepreg 2 and the auxiliary prepreg 3 is cured. Thus, by weighting the solid rod 1 and hardening the resin, tension is applied to the reinforcing fiber prepreg 2 and the auxiliary prepreg 3 in the vertical direction (axial length direction), and the meandering of the fiber of the prepreg is prevented, The bending of the fishing rod material is corrected. Further, it is possible to prevent the reinforcing fiber prepreg 2 and the auxiliary prepreg 3 from being wound into the inside at the jointed portion.

After that, the surface of the fishing rod material is ground and the cored bar is pulled out in the same manner as in the conventional method to produce a fishing rod. According to the above manufacturing method, since no other member is arranged at the joint between the solid rod 1 and the hollow rod tube 2, a step or joint for bonding another member conventionally required to the joint is possible. Steps such as a step of increasing the wall thickness of the joint portion (build-up step) can be omitted, and the fishing rod can be efficiently manufactured.

Unlike the conventional joining method, the fishing rod manufactured in this manner has no other members, so that the stress when the fishing rod is largely deflected is not concentrated and can be dispersed relatively easily. Damage to the joint between the rod and the hollow rod tube 2 is prevented. This makes it possible to withstand repeated use over a long period of time.

Further, since the reinforcing member 4 is disposed at the end of the solid rod 1 inserted in the hollow rod tube 2, the solid rod 1
The stress concentration due to the change in the wall thickness of the portion moving from the end portion of the hollow rod tube 2 to the hollow rod tube 2 is relaxed, and the strength of the joint portion of the solid rod 1 and the hollow rod tube 2 is increased.

Concretely, a bending test was conducted on the fishing rod according to the present invention and a conventional fishing rod, that is, a fishing rod provided with a joining member at the joining portion of the solid rod 1 and the hollow rod tube 2. In this bending test, for the fishing rod material that has been subjected to core metal removal and tape peeling, the original part of the fishing rod material is fixed, the tip part is bent toward the original part to bend, and the bending amount when damage occurs ( The bending radius and the tension) were examined. As a result, the bending amount of the fishing rod material of the present invention was larger than the bending amount of the conventional fishing rod material. That is, the fishing rod material of the present invention did not break even if the bending amount was larger than the bending amount of the conventional fishing rod material. From this, it was found that the fishing rod of the present invention had excellent bending resistance.

In the above embodiment, the construction in which the auxiliary prepreg 3 and the reinforcing member 4 are interposed between the solid rod 1 and the hollow rod 2 has been described, but the solid rod 1 and the hollow rod 2 are described.
The same effect can be obtained without interposing the auxiliary prepreg 3 and the reinforcing member 4 between and. In this case, the reinforcing fiber prepreg 2 is provided with a gap of about 1.0 mm or less, preferably 0.5 mm or less, between the solid rod 1 and the core metal 5.
a. Wrap the auxiliary prepreg 3 if necessary. As a result, the resin of the reinforcing fiber prepreg 2a and the auxiliary prepreg 3 exudes to the inside of the hollow rod tube when the resin is cured, and thus serves as a reinforcing member when the resin is cured. The auxiliary prepreg 3 may not be used when a sufficient amount of resin to exude from the reinforcing fiber prepreg 2a to serve as a reinforcing member.

[0028]

As described above, the fishing rod of the present invention is
Since the solid rod and the hollow rod tube are integrally joined by curing the reinforced fiber prepreg, the joint part has high strength and is not damaged even if it bends greatly, and it can be used repeatedly. It has excellent endurance.

Further, in the method for manufacturing a fishing rod of the present invention, a cored bar is attached to an end of the solid rod having a winding area on the side of the area through a reinforcing member, and the reinforcing fiber prepreg is wound from the area to the cored bar. Since the resin of the prepreg is cured to join the solid rod and the hollow rod tube, it is not necessary to dispose or form another member at the joint portion, and the fishing rod can be efficiently obtained.

[Brief description of drawings]

FIG. 1 is a sectional view for explaining an embodiment of a fishing rod of the present invention.

2A and 2B are views for explaining a method for manufacturing the fishing rod of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Solid rod, 1a ... Winding area, 2 ... Hollow rod tube, 2a
... Reinforcing fiber prepreg, 3 ... Auxiliary prepreg, 4 ... Reinforcing member, 4a ... Recess, 5 ... Core metal, 6 ... Tape.

Claims (3)

[Claims] 1. A solid rod having a winding region, and a hollow rod tube which is joined to the winding region of the solid rod and is formed by winding and hardening a reinforcing fiber prepreg. A fishing rod, wherein a part of a rod is inserted into the hollow rod pipe, and the solid rod and the hollow rod pipe are integrally joined by curing the reinforcing fiber prepreg. 2. The fishing rod according to claim 1, wherein a reinforcing member is arranged at an end of the solid rod inserted in the hollow rod tube. 3. A step of attaching a core metal to an end of the solid rod having a winding area on the winding area side via a reinforcing member, and impregnating a reinforcing fiber with a resin from the winding area to the core metal. A method of manufacturing a fishing rod, comprising: a step of winding a prepreg; and a step of joining the solid rod and the hollow rod tube by curing the resin.