JPH08432B2 - Fishing rod - Google Patents

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art A prepreg whose reinforcing fibers are aligned in the circumferential direction is wound on the inner and outer sides of an intermediate layer formed by winding prepregs in which the reinforcing fibers are aligned in the axial direction to form an inner and outer layer. The fishing rod constructed as described in JP-A-63-39327 and JP-B-2-16628 is known, and the side edges of the prepreg forming the inner and outer layers in these cases are
They are abutted against each other or superposed in a stepped manner as shown in FIGS. 5 and 7 of the above-mentioned JP-A-63-39327.

[0003]

However, in the abutting method, since the circumferentially aligned reinforcing fibers are not continuous at the abutting portion, when stress such as bending and compression is applied to the fishing rod, the resin at the abutting portion is cracked. There is a defect that causes a decrease in strength, and the latter polymerization method also has a problem in that a delamination phenomenon occurs in a polymerization part in a step portion and the strength also decreases.

In view of these circumstances, the present invention provides a fishing rod in which inner and outer layers are formed by winding a prepreg having reinforcing fibers aligned in the circumferential direction on the inner and outer sides of an intermediate layer to form inner and outer layers. An object of the present invention is to provide a fishing rod which is designed to prevent a peeling phenomenon in a portion.

[0005]

In order to achieve the above-mentioned object, the present invention has a reinforcing fiber alignment direction on the inner and outer sides of an intermediate layer formed by winding a prepreg in which the reinforcing fiber alignment direction is an axial direction. In a fishing rod integrally formed by winding inner and outer layers by winding a circumferential prepreg, both side edges of the inner and outer prepregs are polymerized, and the circumferential alignment reinforcing fibers in the polymerized portion are aligned with each other. The reinforcing fibers are joined together so that the thickness of the overlapped portion becomes approximately equal to the thickness of the prepreg.

The length of the polymerized portion of the prepreg whose reinforcing fibers are aligned in the circumferential direction is 100 to 600 times, preferably 300 to 600 times the diameter of the reinforcing fiber, and the fiber areal weight of the prepreg is easily meshed. 35 g / m ² or less,
Impregnated resin amount 35-60 wt%, prepreg thickness 0.0
5 mm, preferably 0.035 or more.

The degree of meshing of the reinforcing reinforcement fibers in the circumferential direction in the overlapping portion of the prepreg is preferably such that the thickness of the prepreg in the overlapping portion is as close as possible to the thickness of the prepreg, and at least the prepreg is at least as thick as possible. Is 50% thick
It is formed so as to bite and mesh with each other.

As means for engaging the overlapped portion of the circumferentially aligned reinforcing fibers, the overlapped portion is wound by rolling means after winding a circumferential prepreg, and 40 to 80 ° C., 3 to 10 ° C.
The prepreg impregnated resin is fluidized by heating and pressurizing at 5 kg / cm ² for about 5 to 20 seconds, and one of the aligned reinforcing fibers is polymerized to be press-fitted between the other aligned reinforcing fibers. According to the method described above, a taping process and a thermosetting process are performed to form a fishing rod.

[0009]

In the present invention, the reinforcing fibers forming the inner and outer layers of the fishing rod are aligned in the circumferential direction, and the aligning reinforcing fibers in the overlapping portion of the prepreg are joined together in a state of meshing with each other between the aligning reinforcing fibers. Therefore, the tensile shearing force in the portion is increased to prevent delamination in the polymerized portion and improve the strength of the fishing rod.

[0010]

Embodiments of the present invention will now be described with reference to the drawings.
The fishing rod 1 has an intermediate layer 2 formed by winding 2 plies of a 0.14 mm thick prepreg (fiber basis weight 150 g / m ² ) in which 7 μ carbon reinforcing fibers are aligned in the axial direction and impregnated with 30 to 38 wt% of epoxy resin. A 7 μm carbon reinforcing fiber integrally provided on the inner and outer sides is aligned in the circumferential direction and a 0.03 mm-thick prepreg (fiber basis weight 30 g / m ² ) impregnated with 30 to 38 wt% of epoxy resin is wound into one ply. The inner layer 3 and the outer layer 4 thus formed have an inner diameter of 20 mm.

However, carbon reinforcing fibers are polymerized on both side edges of the prepreg forming the inner layer 3 and the outer layer 4 over a length of 3500μ, which is 500 times the fiber diameter, and the carbon reinforcing fibers 5 on one side and the other side. The carbon reinforcing fibers 5'on the edges are engaged with each other by press fitting, and the thickness of the interlocking overlapping portions of the inner layer 3 and the outer layer 4 is 0.04 mm.

The bending strength of the fishing rod constructed as described above was 52.6 kg / mm ² in the four-point bending test, while the ^{second one} of the conventional fishing rod JP-A-63-39327 was used.
The bending strength of the fishing rod according to the method shown in the figure is 45.4kg.
/ Mm ² .

[0013]

INDUSTRIAL APPLICABILITY According to the present invention, an intermediate layer is formed by a prepreg whose reinforcing fibers are aligned in an axial direction, and an inner layer and an outer layer which are formed inside and outside by a prepreg whose reinforcing fibers are aligned in a circumferential direction. In a fishing rod consisting of layers, since both side edges of the prepreg of the inner and outer layers are polymerized and the circumferential reinforcing fibers are joined together by interlocking with each other between the other reinforcing fibers, the aligning reinforcing fibers in the polymerized portion are formed. Firmly mesh with each other and press fit tightly to improve tensile shear strength and reliably prevent cracks and delamination phenomena which are conventional defects, significantly improve the fishing rod strength and strengthen the circumferential direction accordingly. Since the amount of fiber is small, it has an excellent feature that the weight of the fishing rod can be reduced.

[Brief description of drawings]

FIG. 1 is an enlarged vertical sectional front view of a main part of a fishing rod according to the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a vertical sectional front view of the fishing rod of the present invention.

FIG. 4 is a vertical sectional front view of the main part.

[Explanation of symbols]

 1 Fishing Rod 2 Middle Layer 3 Inner Layer 4 Outer Layer 5 Reinforcing Fiber

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location B29L 23:00 31:52

Claims (2)

[Claims] 1. A prepreg whose reinforcing fibers are aligned in the circumferential direction is wound on the inner and outer sides of an intermediate layer formed by winding a prepreg whose reinforcing fibers are aligned in the axial direction. In the fishing rod configured as described above, both side edges of the inner and outer prepregs are polymerized, and the circumferential alignment reinforcing fibers in the overlapping portion mesh with each other between the other reinforcing reinforcing fibers so that the thickness of the overlapping portion is equal to that of the prepreg. A fishing rod characterized by being joined so that the thickness is approximately the same as the thickness. 2. The length of the polymerized portion of the inner and outer prepregs is 100 times or more the diameter of the aligned reinforcing fibers, and the fiber areal weight of the inner and outer prepregs is 35 g / m ² or less. Fishing rod.