JPH11266747A - Fishing rod - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fishing rod remarkably improved in bending balance of the whole fishing rod by integrally forming a padding part fitting with an outer joint part of a rod tube on the rear side at the rear end of an inner joint part. SOLUTION: This fishing rod is obtained by inserting an inner joint part 15 formed at the rear end of a rod tube 11 on the front side into an outer joint part 17 formed at the front end of a rod tube 13 on the rear side, connecting the rod tube 11 on the front side to the rod tube 13 on the rear side, impregnating reinforcing fibers comprising reinforcing fibers in the axial longitudinal direction and the reinforcing fibers in the peripheral direction with a synthetic resin, forming the rod tube 11 on the front side and the rod tube 13 on the rear side, reducing the amount of the reinforcing fibers in the axial longitudinal direction in the inner joint part 15 of the rod tube 11 on the front side, forming the rod tube 11 on the front side so as to reduce the rigidity of the inner joint part 15 in the axial longitudinal direction and integrally forming a padding part 25 fitting into the outer joint part 17 of the rod tube 13 on the rear side at the rear end of at least the inner joint part 15.

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 an inner joint formed at a rear end of a front rod pipe and an outer joint formed at a front end of a rear rod pipe. The present invention relates to a fishing rod that is inserted and connects a front rod pipe and a rear rod pipe.

[0002]

2. Description of the Related Art Generally, as disclosed in Japanese Utility Model Publication No. Sho 58-41831, a fishing rod such as a swing rod is provided with an inner joint formed at a rear end of a front rod pipe and a rear rod. It is configured by fitting into an outer joint formed at the front end of the pipe and connecting the front rod pipe and the rear rod pipe.

[0003] In the fishing rod disclosed in Japanese Utility Model Publication No. 58-41831, a concave groove is formed in the outer circumferential surface of the inner joint portion of the front rod pipe in the circumferential direction. At the time of joining with the rear rod pipe, even if excessive fitting is made, the inner joint part of the front rod pipe and the outer joint part of the rear rod pipe do not come into close contact, and the attachment and detachment is smoothly and securely. It is possible to do.

[0004]

However, in such a conventional fishing rod, a projection for forming a convex portion is simply provided at a predetermined interval outside a position for forming an inner joint portion of a prepreg sheet for forming a front rod tube. Since the auxiliary prepreg sheet is wound and a concave groove is formed between the built-up portions formed thereby, the rigidity of the inner joint portion of the front rod tube becomes relatively high, and the front rod tube and the rear side There is a problem that the rigidity of the joint portion with the rod pipe becomes larger than other portions, and it becomes difficult to enhance the bending (bending) balance of the fishing rod as a whole.

That is, for example, in a fishing rod such as an ayu rod, it is particularly desired that the entire fishing rod be formed in a smooth arc shape. However, in a conventional fishing rod, the rigidity of a joint portion is larger than other portions. In addition, there is a problem in that the fishing rod is bent in a cross shape at the joint portion, and it is difficult to obtain a sufficient balance. The present invention has been made to solve such a conventional problem, and an object of the present invention is to provide a fishing rod capable of greatly improving the bending balance of the entire fishing rod as compared with the conventional fishing rod.

[0006]

According to the fishing rod of the first aspect, an inner joint formed at the rear end of the front rod tube is inserted into an outer joint formed at the front end of the rear rod tube. Then, while connecting the front rod pipe and the rear rod pipe, the front rod pipe and the rear rod pipe are formed by impregnating a synthetic resin into a reinforcing fiber composed of an axial length reinforcing fiber and a circumferential reinforcing fiber. Fishing rod
The inner joint portion of the front rod pipe is formed such that the amount of the axial reinforcing fibers is reduced so that the rigidity of the inner joint portion in the axial direction is reduced, and at least a rear end portion of the inner joint portion. In addition, a built-up portion to be fitted to the outer joint portion of the rear rod pipe is integrally formed.

(Function) In the fishing rod of the first aspect, the amount of reinforcing fibers in the axial direction is reduced at the inner joint portion of the front rod tube so that the rigidity of the inner joint portion in the axial direction is reduced. In addition, the rigidity of the joint between the front rod pipe and the rear rod pipe does not extremely increase at the joint.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a fishing rod according to a first embodiment of the present invention. In the drawing, reference numeral 11 denotes a front rod disposed on the front side of the fishing rod, and reference numeral 13 denotes a rear side of the front rod 11. Fig. 3 shows a rear pole tube arranged.

At the rear end of the front rod 11 is an inner joint 1
5 is formed, and an outer joint portion 17 is formed at the front end of the rear rod 13. Then, the front rod pipe 11 is inserted through a rear end opening (not shown) of the rear rod pipe 13, and is inserted into the outer joint part 17 of the rear rod pipe 13 and the inner joint part 1 of the front rod pipe 11.
By fitting 5, the front rod pipe 11 and the rear rod pipe 13 are connected.

However, in this embodiment, the front rod 1
The thickness of the inner joint portion 15 of the first rod pipe 11 is
The inner joint portion 15 is formed to be thinner than the wall thickness and to have a lower rigidity in the axial direction of the inner joint portion 15, thereby forming a thin wall portion 21. And the front end 1 of the inner joint 15 of the front rod 11
Overlay portions 23 and 25 that fit into the outer joint portion 17 of the rear rod 13 are formed integrally with the rear end portion 9a and the rear end portion 19b.

In this embodiment, a portion of the inner joint portion 15 of the front rod 11 excluding the front end 19a is a thin thick portion 21. The fishing rod configured as above,
It is manufactured as described below. That is, first, a mandrel 27 for forming the front rod 11 as shown in FIG. 2A is prepared.

Thereafter, on the outer periphery of the mandrel 27,
A prepreg sheet 29 as shown in (b) is wound. The prepreg sheet 29 includes a main body prepreg sheet 31 and auxiliary prepreg sheets 33 and 35.

The main prepreg sheet 31 is composed of a first prepreg sheet 37 and a second prepreg sheet 39. These prepreg sheets 37 and 39 are provided with an axial reinforcing fiber 43 on a circumferential reinforcing fiber 41. They are arranged and impregnated with a synthetic resin. The first prepreg sheet 37 has a rectangular shape, and has a length corresponding to the entire length of the front rod 11.

The second prepreg sheet 39 has a trapezoidal shape in which the upper end of the figure is overlapped with the lower end of the first prepreg sheet 37 and the lower end of the figure is tapered.
Has a length up to the thin thick portion 21. And the first
At the rear ends of the second prepreg sheets 37 and 39, rectangular auxiliary prepreg sheets 33 and 35 for forming the built-up portions 23 and 25 are arranged.

After the prepreg sheet 29 is wound around the mandrel 27, a tape 45 is wound around the prepreg sheet 29, as shown in FIG. By pulling out 27, the front rod 11 as shown in (d) is manufactured. However, in the fishing rod configured as described above, the amount of the axial reinforcement fibers 43 in the inner joint 15 of the front rod tube 11 is reduced so that the axial rigidity of the inner joint 15 is reduced. And at least the inner joint 1
Since the built-up portion 25 that fits into the outer joint portion 17 of the rear rod tube 13 is formed integrally with the rear end of the rear rod 5, the rigidity of the joint portion between the front rod tube 11 and the rear rod tube 13 is reduced. It does not increase extremely at the joint portion, and the bending balance of the entire fishing rod can be greatly improved as compared with the conventional art.

That is, in the fishing rod configured as described above, when the front rod pipe 11 and the rear rod pipe 13 are spliced, the rigidity of the spliced part does not extremely increase at the spliced part. As a result, the bending rigidity of the fishing rod as a whole is reduced very smoothly toward the tip end of the fishing rod, and the bending balance of the entire fishing rod can be greatly improved as compared with the conventional fishing rod. A strong fishing rod can be provided.

Further, since the thin portion 21 is formed in the inner joint portion 15 of the front rod 11, the weight of the front rod 11 can be reduced. In the above-described method for manufacturing a fishing rod, the prepreg sheet 29 is formed by combining the prepreg sheet 29 with the main prepreg sheet 31 in which the amount of the axial longitudinal reinforcing fibers 43 is reduced in the portion located at the inner joint portion 15 of the front rod pipe 11. The front rod tube 11 formed directly on the seat 31
And the auxiliary prepreg sheet 35 for forming the built-up portion 25 at the rear end of the inner joint portion 15 of the front rod tube 11, the rigidity of the inner joint portion 15 of the front rod tube 11 is reduced, and
It is possible to easily manufacture a fishing rod in which the rigidity of the joint between the first rod and the rear rod tube 13 does not extremely increase at the joint, and the bending balance of the entire fishing rod can be greatly improved as compared with the related art. Becomes possible.

FIG. 3 shows a second embodiment of the fishing rod of the present invention. In this embodiment, the entire outer periphery of the thin thick portion 21 of the inner joint 15 of the front rod 11 is strengthened in the circumferential direction. A built-up portion 47 made of the fiber 41 is formed. The fishing rod configured as described above is manufactured as described below. In other words, in this embodiment, as shown in FIG. 4B, the overlay is formed in a space formed between the lower rear portion of the first prepreg sheet 37 and the rear end of the second prepreg sheet 39. Circumferential reinforcing fiber 41 for forming the portion 47
An auxiliary prepreg sheet 49 is formed, and an auxiliary prepreg sheet 35 for forming the overlay 25 is arranged on the auxiliary prepreg sheet 49.

After the prepreg sheet 51 is wound around the mandrel 27, as shown in FIG. 3 (c), a tape 45 is wound around the outer periphery of the prepreg sheet 51, and after firing, the mandrel is baked. By pulling out 27, the front rod 11 as shown in (d) is manufactured.

In the fishing rod configured as described above, substantially the same effects as in the embodiment shown in FIG. 1 can be obtained. In this embodiment, the overlaid portion 47 is formed on the thin and thick portion 21 of the inner joint portion 15 of the front rod 11, but the overlaid portion 47 is formed by the circumferential reinforcing fibers 41. In addition, the bending rigidity in the axial direction of the joint portion is relatively small, and conversely, the strength of the thin thick portion 21 can be improved while maintaining the bending balance of the fishing rod.

[0021]

As described above, in the fishing rod of the first aspect, the amount of reinforcing fibers in the axial direction in the inner joint portion of the front rod is reduced, and the rigidity of the inner joint portion in the axial direction is reduced. Formed at least at the rear end of the inner joint portion, since the built-up portion that fits into the outer joint portion of the rear rod pipe is integrally formed,
The rigidity of the joint portion between the front rod tube and the rear rod tube does not increase extremely at the joint portion, and the bending balance of the entire fishing rod can be greatly improved as compared with the related art.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a first embodiment of a fishing rod of the present invention.

FIG. 2 is an explanatory view showing a method of manufacturing the fishing rod of FIG.

FIG. 3 is a longitudinal sectional view showing a fishing rod according to a second embodiment of the present invention.

FIG. 4 is an explanatory view showing a method of manufacturing the fishing rod of FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Front rod pipe 13 Rear rod pipe 15 Inner joint part 17 Outer joint part 25 Overlay part 27 Mandrel 31 Main body prepreg sheet 35 Auxiliary prepreg sheet 41 Circumferential reinforcing fiber 43 Axial longitudinal reinforcing fiber

Claims (1)

[Claims] 1. An inner joint formed at a rear end of a front rod pipe is inserted into an outer joint formed at a front end of a rear rod pipe. And a fishing rod formed by impregnating the front rod and the rear rod with a synthetic resin in a reinforcing fiber comprising an axial reinforcing fiber and a circumferential reinforcing fiber, wherein the inside of the front rod is The joint portion is formed so that the amount of the reinforcing fiber in the axial direction is reduced so that the rigidity of the inner joint portion in the axial direction is reduced, and at least a rear end of the inner joint portion is provided with the rear rod. A fishing rod characterized in that a built-up portion fitted to an outer joint portion of a pipe is integrally formed.