JP2002101788A - Fishing rod - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fishing rod capable of preventing the reduction of extent of its bending at a fitting part having a small diameter and producing a smooth joined rod touch. SOLUTION: This tip rod 4 of the fishing rod has a fitting male part 12 consisting of a low elastic modulus prepreg P2 for grinding and formed at the circumferential surface of its rod end side. On the other hand, a tip rod- receiving rod 3 has a fitting female part 14 consisting of the low elastic modulus prepreg P2 for grinding and formed at the inner circumferential surface of its tip end side. By grinding the low elastic modulus prepregs P2 for grinding and adjusting their diameters, the fitting male part 12 and the fitting female part 14 are formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a "joint rod" for connecting a plurality of fishing rods in a joint manner.

[0002]

2. Description of the Related Art A conventional connecting rod is constructed by sequentially connecting a plurality of tapered cylindrical rods made of a fiber reinforced resin obtained by impregnating fibers such as carbon fibers with a synthetic resin. Specifically, a fitting male portion is formed on the outer peripheral surface on the rod base side of one rod body, a fitting female portion is formed on the inner peripheral surface on the tip side of the other rod body, and the fitting male portion is fitted. By connecting to the female part, they are connected to form a single rod.

[0003] Such a fitting male part and a fitting female part are generally formed by the following method in order to produce a delicate fitting force. That is, a fiber reinforced resin sheet (prepreg) is wound around a core material to constitute a rod body, and a prepreg for polishing is laminated on a portion forming a fitting male portion or a fitting female portion, and these are baked and integrated. To Then, after firing, the polishing prepreg is polished to form a fitting male part and a fitting female part, and adjust the diameter thereof.

[0004]

When the rod body is manufactured as described above, a polishing prepreg is laminated at a predetermined position for adjusting the diameter of the fitting male portion and the fitting female portion. However, although being polished, not all polishing prepregs are eventually polished and disappear, and some of the polishing prepregs eventually remain in the fitting male part and the fitting female part. . Then, the remaining polishing prepreg leads to lowering the degree of bending of the fitting male part and the fitting female part as compared with other parts. However, the degree of bending tends to decrease in the fitting male part and the fitting female part where the two rod bodies overlap, compared to the other parts. I want to avoid as much as possible.

[0005] In particular, the degree of bending is important in the small-diameter tip rod located closest to the tip and the fitting portion with the ear-rod connected thereto, and the unnatural bending degree in such a fitting portion is important. Must be prevented.

SUMMARY OF THE INVENTION An object of the present invention is to provide a fishing rod capable of preventing a decrease in the degree of bending particularly at a small-diameter fitting portion and capable of producing a smooth rod condition.

[0007]

Means for Solving the Problems The fishing rod according to the invention 1 is:
It is a fishing rod formed by connecting a plurality of rod bodies in a spliced form,
A tip rod having a fitting male part made of a low elastic modulus fiber reinforced resin formed on the rod side peripheral surface, and the fitting male formed on the tip side inner peripheral surface connected to the rod base side of the tip rod. A rod having a fitting female portion engageable with the portion.

In this fishing rod head, a prepreg is wound around a core material to form a rod body, and a polishing prepreg made of a fiber reinforced resin having a low elastic modulus is laminated on a portion forming a fitting male portion. Is fired to integrate, and after firing, the fitting male part is polished to adjust its diameter. Even if the prepreg for polishing remains in the male fitting portion after polishing, the male fitting portion is made of a low modulus fiber reinforced resin and has a low elastic modulus, so that the influence on the degree of bending of the rod is small. Therefore, it is possible to sufficiently prevent the unnecessary bend degree from being reduced at the fitting portion with the small-diameter head rod located closest to the head side and the ear-rod connected thereto.

The present invention may be applied to a portion other than the fitting portion between the head rod and the holding rod. It is preferable to use a non-low-modulus fiber-reinforced resin as a polishing prepreg, as before, since sharp casting is possible when there is a portion having a small degree of bending.

[0010] The "low modulus" used in the present invention.
The term refers to the tensile modulus of the reinforcing fibers in the fiber reinforced resin. The fishing rod according to the invention 2 is the invention 1
Wherein the fitted female portion is made of a low modulus fiber reinforced resin.

In this fishing rod, since the fitting female portion of the ear-holding rod is also made of a low elasticity fiber reinforced resin, the influence on the degree of bending of the rod body is small, and the small-diameter ear tip located closest to the ear tip side. Unnecessary bending can be more effectively prevented from lowering at the portion where the rod and the rod connected thereto are fitted.

A fishing rod according to a third aspect of the present invention is a fishing rod formed by connecting a plurality of rods in a side-by-side manner, comprising: a head rod having a fitting male portion formed on a peripheral surface of the base of the rod; An ear-holding rod which is connected to the rod base side and which has a fitting female portion made of a low elastic modulus fiber reinforced resin on an inner peripheral surface of the tip side and which can be fitted to the fitting male portion.

In this fishing rod, since the fitting female portion of the ear-holding rod is made of a low elasticity fiber reinforced resin, the influence on the degree of bending of the rod body at the fitting portion is small, and the fishing rod is located closest to the ear tip side. It is possible to effectively prevent an unnecessary bending degree from being reduced at a portion where the small-diameter head rod and a head rod connected thereto are fitted.

A fishing rod according to a fourth aspect of the present invention is the fishing rod according to any one of the first to third aspects, wherein the low modulus fiber reinforced resin has a tensile modulus of 5 to 10 t / mm ² . By using such a low elastic modulus having a predetermined tensile elastic modulus, it is possible to satisfactorily suppress a decrease in the degree of bending of the fitting portion.

A fishing rod according to a fifth aspect of the present invention is the fishing rod according to the fourth aspect, wherein the low modulus fiber reinforced resin constituting the fitting male portion and the fitting female portion is obtained by impregnating a glass fiber with a thermosetting resin.
By using such a low elastic modulus fiber reinforced resin in which a glass fiber is impregnated with a thermosetting resin, abrasion or the like due to repeated fitting of fitting portions can be sufficiently prevented.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a fishing rod adopting an embodiment of the present invention includes an original rod 1 and an original rod 1.
And a front end rod 2, a head end rod 3, and a head end rod 4 which are sequentially connected to the front end side of the front end in a joining manner. Each of these rod bodies connected in a side-by-side manner has a fitting male portion formed on the outer peripheral surface of the rod body located on the tip side of the rod body located on the tip side and fits on the inner peripheral surface of the tip body of the rod body located on the rod base side. A mating female portion is formed, and the mating male portion is connected to the mating female portion by fitting (see FIG. 2).

The original rod 1 includes a rod grip 5 fixed to an end of the rod side, a front grip 6 fixed to the tip side of the rod grip 5, and a gap between the rod grip 5 and the front grip 6. Reel sheet 8 formed to be capable of detachably fixing the reel 7
And A plurality of fishing line guides 9 are provided at intervals on the peripheral surface of each of the rods 1 to 4.

Each of the rods 1 to 4 is formed by winding a plurality of sheet-shaped prepregs in which reinforcing fibers such as carbon fibers are impregnated with a thermosetting synthetic resin such as an epoxy resin around a mandrel as described in detail below. It is a tapered cylindrical member obtained by firing. Particularly, a polishing prepreg is wound around the fitting male portion and the fitting female portion, and a low elastic modulus prepreg is used as the polishing prepreg for the tip rod 4 and the holding rod 3 as follows.

As shown in FIG. 2, each of the tip rod 4 and the tip rod 3 is a tapered cylindrical member. The head tip rod 4 has a cylindrical main body part 11 and a fitting male part 12 partially formed over the entire circumference on the rod base side outer peripheral surface of the main body part 11. It has a cylindrical main body 13 and a fitting female part 14 which is partially formed on the inner peripheral surface on the tip side of the main body 13 over the entire circumference.

The main bodies 11, 13 are made of a prepreg formed by impregnating a reinforcing fiber such as carbon fiber or glass fiber with a thermosetting synthetic resin. Its elastic modulus is about 15
３０30 t / mm ² . The fitting male part 12 and the fitting female part 14 are made of a low elastic modulus prepreg formed by impregnating a thermosetting resin into glass fiber having a small elastic modulus.
Its elastic modulus is about 5~10t / mm ^2, more preferably from 7~8t / mm ^2.

The spike rod 4 and the spike rod 3 are manufactured as follows. As shown in FIG. 3, a release agent such as wax is applied as needed to the outer periphery of a mandrel (core material) 100 which is a rod-shaped member having a predetermined tapered shape, as shown in a method of manufacturing the ear rod 3. . Subsequently, the polishing prepreg P2 is wound around the tip side portion of the mandrel 100.
The polishing prepreg P2 is arranged at a position corresponding to the fitting female portion 14. As described above, the polishing prepreg P2 is a low elastic modulus prepreg formed by impregnating glass fiber having a small elastic modulus with a thermosetting resin.

Subsequently, the sheet-shaped main prepreg P1 is wound around the mandrel 100. The main prepreg P <b> 1 is formed by processing a sheet obtained by impregnating a reinforcing resin such as a glass fiber or a carbon fiber with a synthetic resin into a sheet shape, and constitutes the main body 13 described above. Main prepreg P to be used
Although 1 shows only one prepreg in the figure, a plurality of main prepregs P1 are used as necessary. The main prepregs P1 may have different orientation directions of the reinforcing fibers.

On the other hand, as shown in FIG. 4, a method for manufacturing the tip rod 4 requires a release agent such as wax on the outer periphery of a mandrel (core material) 100 which is a rod-shaped member having a predetermined taper. Apply as appropriate. Subsequently, the sheet-shaped main prepreg P1 is wound around the mandrel 100.
The main prepreg P <b> 1 is similar to the above-mentioned ear rod 3, and forms the main body 11. Subsequently, the polishing prepreg P2 is wound around the outer periphery of the main prepreg P1 on the rod base side. This polishing prepreg P2 is arranged at a position corresponding to the fitting male portion 12. As described above, the polishing prepreg P2 is a low elastic modulus prepreg formed by impregnating glass fiber having a small elastic modulus with a thermosetting resin.

Thereafter, a polypropylene tape for molding is wound around the outer periphery of the prepreg while applying pressure, and the shape of the rod body 1 is adjusted while increasing the adhesion of the prepregs to obtain a rod material. After the rod material thus obtained is fired while suspended in a furnace, the mandrel 100 is pulled out and the tape is peeled off. Then, both ends are cut to a desired length, the surface is polished smoothly, and the necessary coating is applied. The prepreg P2 for polishing is polished and the diameter is adjusted to adjust the diameter of the fitting male part 12 and the fitting female part 14. Are formed, and the head rod 4 and the endless rod 3 are manufactured.

In the head rod 4 and the head rod 3 manufactured as described above, the prepreg P2 for polishing is attached to the male part 1 after polishing.
2. Even if the polishing prepreg P2 remains in the fitted female portion 14, the polishing prepreg P2 is made of a predetermined low modulus fiber reinforced resin and has a low modulus of elasticity, so that the influence on the degree of bending of the rod is small. Therefore, it is possible to sufficiently prevent the unnecessary bending degree from being reduced at the fitting portion between the small-diameter tip rod 4 located closest to the tip side and the ear-rod 3 connected thereto.

In the present embodiment, the tip rod 4,
Since this low elastic modulus polishing prepreg P2 is not used except for the fitting part of the ear-holding rod 3, there is a part where the degree of bending is small to some extent at the connecting part of the rods located on the hand side. , Sharp casting is possible.

[Other Embodiments] (a) In the above embodiment, the head rod 4 and the head rod 3
Although the low elastic modulus polishing prepreg P2 is used for both of the fitting male portion 12 and the fitting female portion 14 with this, it may be used for only one of them.

[0028]

According to the method of the present invention, it is possible to prevent the unnecessary bending of the joint fitting portion from being lowered.

[Brief description of the drawings]

FIG. 1 is an overall view of a fishing rod employing an embodiment of the present invention.

FIG. 2 is a view showing a spliced fitting part of the head rod 4 and the ear rod 3 of FIG. 1;

FIG. 3 is a view showing a manufacturing process of the ear-holding rod 3 of FIG. 1;

FIG. 4 is a view showing a manufacturing process of the tip rod 4 of FIG. 1;

[Explanation of symbols]

 Reference Signs List 3 Head holding rod 4 Head rod 11, 13 Main body part 12 Fitting male part 14 Fitting female part P1 Main prepreg P2 Low elastic modulus polishing prepreg

Claims (5)

[Claims] 1. A fishing rod formed by connecting a plurality of rods in a side-by-side manner, comprising: a tip rod having a fitting male portion made of a low elastic modulus fiber reinforced resin formed on a rod base side peripheral surface; A fishing rod having a fitting female part connected to the rod base side of the tip rod and capable of fitting to the male fitting part formed on the inner peripheral surface of the tip side. 2. The fishing rod according to claim 1, wherein said mating female portion is made of a low modulus fiber reinforced resin. 3. A fishing rod in which a plurality of rods are connected in a side-by-side manner, comprising: a tip rod having a fitting male portion formed on a peripheral surface of a rod side; A fishing rod, comprising: a spliced rod that is connected to the inner peripheral surface of the tip side and that is made of a low-modulus fiber-reinforced resin and that has a fitted female portion that can be fitted to the male fitting portion. 4. The fishing rod according to claim 1, wherein said low modulus fiber reinforced resin has a tensile modulus of 5 to 10 t / mm ² . 5. The fishing rod according to claim 4, wherein the low elasticity fiber reinforced resin forming the fitting male part and the fitting female part is made by impregnating glass fiber with thermosetting resin.