JP3139564B2 - Head 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 tip rod used at the tip of a fishing rod.

[0002]

2. Description of the Related Art Conventionally, as a tip rod used at the tip of a fishing rod, a reinforcing fiber bundle impregnated with a thermosetting resin is heated as disclosed in, for example, Japanese Utility Model Publication No. 55-69975. After molding, a solid core is formed by polishing, and the outside of this solid core is coated with a thermoplastic resin thickly.In such a head rod, the bending amount of the head rod is increased, It is possible to obtain a supple-headed rod.

[0003]

However, in such conventional spikes, the solid core is formed by subjecting a reinforcing fiber bundle impregnated with a thermosetting resin to heat molding, followed by polishing to form an outer layer. However, since the outside of the solid core is formed by coating the thermoplastic resin thickly, the speed at which the tip reverts to its original shape after bending is greatly affected by the solid core, and the sticky bending There has been a problem that it is difficult to obtain a tip with good flexibility.

Further, since the outside of the solid core is coated with a thermoplastic resin thickly to form an outer layer, a thermal deformation stress is generated between the solid core and the outer layer due to a temperature difference between the solid core and the outer layer. As a result, there is a problem that bending and twisting are liable to occur in the tip rod.

Further, since the amount of fiber in the cross section of the tip rod is relatively small, and particularly, the outer layer has a thick layer without any reinforcing fibers, the strength is low for the thickness of the tip rod.
There is a problem that it is easily damaged and breaks easily occur.

There is also a problem that it is difficult to coat the outside of the solid core with a relatively thick and uniform thermoplastic resin so that the solid core is not displaced. The present invention has been made in order to solve such a conventional problem, and an object of the present invention is to provide a tip rod having high bending strength and sufficient bending strength capable of sufficiently withstanding large bending.

[0007]

Means for Solving the Problems] top rod of claim 1, the reinforcing fibers impregnated with thermoplastic resin, Rutotomoni aligned drawn number in the axial direction of the rod body, the reinforcing fibers of the rod body
It is characterized by being arranged more on the shaft core side than on the outer peripheral side and integrally formed by heat molding . The spike of claim 2 is described in claim 1.
In the above-mentioned ear tip rod, natural lacquer or
Is characterized by forming a coating layer made of thermosetting resin.
Sign.

[0008]

According to the first aspect of the present invention, since the thermoplastic resin is used as the matrix, the allowable deformation amount against bending is larger than that when the thermosetting resin is used as the matrix. Since the fibers are aligned in the axial direction, the adhesion between the reinforcing fibers and the thermoplastic resin becomes uniform and good. Then, place the reinforcing fibers on the outer peripheral side of the rod body.
The rigidity on the shaft side is large
When no force acts on the tip of the tip
And bends more than necessary. Also,
When a force is applied to the tip of the tip, the outer rigidity is low.
Therefore, the tip rod can be largely bent. Claim
In the 2nd pole, natural lacquer or thermosetting outside the rod body
A film layer made of a conductive resin is formed,
Compared to the case where the side layer is made of thermoplastic resin thicker
The temperature between the skin layer and the rod body during the formation of the skin layer.
Thermal stress due to the difference in temperature is reduced, the tip rod bends, there is
Or the twist becomes smaller.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows an embodiment of a head rod according to the present invention. The head rod is tapered from a rear end 11 to a front end 13.

As shown in FIG. 2 and FIG. 3, this ear tip rod is formed by forming a coating layer 17 on the outer periphery of a rod body 15. The rod main body 15 is formed by aligning a large number of reinforcing fibers 19 impregnated with a thermoplastic resin in the axial length direction of the rod main body 15 and integrally heat-molding them.

The thermoplastic resin includes, for example, polyetheretherketone (PEEK), polyetherimide (PEI), polycarbonate (PC), polyphenylene sulfide (PPS), polyethersulfide (PES), and polyamide (PA). ), Polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polypropylene (PP), ABS resin (A
Resins such as BS) are used.

The reinforcing fibers 19 include carbon fibers,
High-strength fibers such as glass fibers and aramid fibers are used, but are not necessarily high-strength fibers. For example, known low-elastic fibers may be used.

In this embodiment, the reinforcing fibers 19
Are arranged more on the axis side than on the outer side of the rod body 15.
You. In the above-mentioned ear tip rod, a large number of reinforcing fibers 19 impregnated with a thermoplastic resin are aligned in the axial direction of the rod body 15 so as to have a circular cross section, and are integrally heat-formed to form the rod body 1.
5 is formed, and then a film layer 17 is formed on the surface of the rod body 15 to manufacture the rod body 15.

In this embodiment, since the rod body 15 is tapered at the front end, as shown in FIG. 2, the length of the reinforcing fiber 19 located on the outside in the axial direction is changed, and the rear end portion is changed. On the 11 side, more reinforcing fibers 19 than the distal end portion 13 are arranged.

Thus, in the head rod configured as described above, a large number of reinforcing fibers 19 impregnated with a thermoplastic resin are aligned in the axial direction of the rod body 15 and integrally formed by heating to form the rod body 15. Since it is formed, it is possible to obtain a high-strength spike rod that has sufficient flexibility to withstand large deflections.

That is, in the above-mentioned ear tip rod, since the thermoplastic resin is used as the matrix, the allowable deformation amount against the bending becomes larger than that in the case where the thermosetting resin is used as the matrix. Since the fibers 19 are aligned in the axial direction, the adhesion between the reinforcing fibers 19 and the thermoplastic resin becomes uniform and good, so that it is possible to obtain a flexible rod that can sufficiently withstand large bending. it can.

Further, since the reinforcing fibers 19 are disposed on the entire cross section of the rod body 15, the bending properties are sufficiently maintained by the reinforcing fibers 19, and the damage and breakage from the coating layer 17 are prevented. For this reason , it is possible to obtain a high-strength head rod.

Further, in the above-mentioned ear tip rod, the rod body 15
Since the coating layer 17 made of natural lacquer or thermosetting resin is formed on the outside of the base material, the formation of the coating layer 17 is thicker than in the conventional case where the outer layer is made thicker with a thermoplastic resin.
The thermal stress due to the temperature difference between the coating layer 17 and the rod body 15 at the time of shaping is reduced, and the bending or torsion of the spike can be reduced.

In the embodiment described above, the rod body 15
Has been described in a solid state, but the present invention is not limited to such an example, and it is of course possible to form a hollow tube.

In the embodiment described above, the reinforcing fibers 1
Although an example in which 9 is completely aligned in the axial direction has been described, the present invention is not limited to such an example.
For example, to hold the reinforcing fibers 19 in the axial direction, or to prevent the rod body 15 from being crushed when the rod body 15 is a tubular body,
Of course, some reinforcing fibers 19 may be arranged in the circumferential direction, or may be arranged at a predetermined angle with respect to the axial direction.

Further, in the embodiment described above, the rod body 1
Although the example in which the coating layer 17 made of natural lacquer or thermosetting resin is formed on the outer side of the coating layer 5 has been described, the present invention is not limited to such an embodiment, and the coating layer 1 is not necessarily required.
7 may not be formed, and the coating layer 17 may be formed of a thermoplastic resin.

In the embodiment described above, an example using one kind of reinforcing fiber 19 has been described. However, the present invention is not limited to this embodiment. Highly elastic reinforcing fibers may be arranged, and reinforcing fibers having relatively low elasticity may be arranged outside the reinforcing fibers.

Further, in the present invention, as the reinforcing fibers 19 of the rod body 15, low elasticity pitch type carbon fibers having an elastic modulus of 20 ton / mm ² or less can be used. In this case, even if the pitch-based carbon fiber has a low elasticity and hardly absorbs water, even if it is immersed long in the water as a spikestick,
There is no decrease in strength or change in condition due to water absorption deterioration, and a good-bending spike can be obtained.

Further, according to the present invention, by reducing the reinforcing fibers 19 of the rod main body 15 to a certain amount or less, the spike rod can be plastically deformed at the time of large bending. In other words, for example, after the tip of the tip rod is enlarged in a ring shape until it reaches the original rod, it is possible not to restore to the original shape position, but to make a state in which a little deflection remains, in this case, Like a whale ear, it can be used as a sticky stick.

In this case, it is preferable that the reinforcing fibers 19 are arranged substantially uniformly in the cross section of the rod body 15 or arranged in a large amount at the center, and the fiber ratio is 60% by weight or less, particularly carbon fiber or carbon fiber. 50% by weight for glass fiber
It is preferable to set the following.

Further, in this case, as the reinforcing fiber 19 having a high breaking elongation is used, even if the fiber ratio is increased, the fiber is not broken and the plastic deformation can be sufficiently performed.

[0027]

As described above, in the head rod according to the first aspect of the present invention, a large number of reinforcing fibers impregnated with a thermoplastic resin are aligned in the axial direction of the rod body, and integrally heated and formed. Since it is formed, it is possible to obtain a high-strength spike rod that has sufficient flexibility to withstand large deflections . And the reinforcing fiber is
More rigidity on the shaft side due to more arrangement on the shaft side
When no force acts on the tip of the tip,
Tension can be added to prevent bending more than necessary
it can. Also, when force is applied to the tip of the tip,
Low rigidity on the side allows the tip rod to flex significantly
Can be In the head rod according to claim 2, the rod body
Forming a coating layer made of natural lacquer or thermosetting resin on the outside
The outer layer is made of thermoplastic resin as before.
Compared to the case of forming a thicker, when forming the coating layer
Thermal stress due to temperature difference between the coating layer and the rod body is reduced.
To reduce the bending or twisting of the spike
it can.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of a tip rod according to the present invention.

FIG. 2 is a sectional view showing details of a portion II of the tip rod of FIG. 1;

FIG. 3 is a sectional view taken along the line III-III in FIG. 2;

[Explanation of symbols]

 15 Rod body 17 Coating layer 19 Reinforcing fiber

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A01K 87/00 630

Claims (2)

(57) [Claims] 1. A reinforcing fibers impregnated with thermoplastic resin, pulling many in the axial direction of the rod body aligned Rutotomoni, the strong chemical fiber
A tip rod in which fibers are arranged more on the axis side than on the outer peripheral side of the rod body, and are integrally formed by heating. 2. A spike rod according to claim 1, wherein said rod body is made of natural lacquer or thermosetting resin.
A spike rod comprising a coating layer formed thereon.