JPH11346602A - Fishing rod body and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a readily producible fishing rod body having high rotation stability in the circumferential direction. SOLUTION: A first middle fishing rod is a tapered cylindrical member having a hollow part in the interior. The end part at the tip side has a smaller diameter of an inner periphery than those at other parts, is formed slightly thinner and is made into a part 2a to be engaged. The first middle fishing rod is a rod body obtained by arranging a winding start side 30a of prepreg 30 in an inclined state based on the direction of a shaft center on a mandrel 100, winding the prepreg 30 on the mandrel 100 and baking the prepreg.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rod constituting a fishing rod used for fishing and a method of manufacturing the same.

[0002]

2. Description of the Related Art A rod body constituting a conventional fishing rod is manufactured as follows. First, a release agent (not shown) such as wax is applied to the outer periphery of the mandrel 100. And
As shown in FIG. 6, the prepreg 60
Is wound. The prepreg 60 is a sheet-like member in which a reinforcing fiber such as a carbon fiber is impregnated with a resin. The prepreg 60 is wound while applying pressure to the mandrel 100 such that one side 60a of the prepreg 60 is aligned with the axial direction of the mandrel 100 to obtain a rod material. Then, the rod material is fired. Thereafter, the mandrel 100 is pulled out and subjected to a surface treatment or the like to manufacture a rod body.

[0003]

As shown in FIG. 6, the rod body manufactured as described above has a portion 60a (hereinafter referred to as a "winding start side") where the prepreg has begun to be wound around the mandrel during manufacturing, as shown in FIG. The thickness between the wound portion 60b (hereinafter, referred to as “winding end side”) becomes thicker than other portions (see the portion A in FIG. 6). This thick portion becomes thicker than other portions even after firing, and becomes a portion having higher rigidity than other portions. For this reason, the completed rod body has a large rigid part and a small rigid part in the circumferential direction.

[0004] If there is such a change in rigidity in the circumferential direction,
The rotational stability in the circumferential direction decreases. That is, if the rigidity is high or low in the circumferential direction, when a load exceeding a certain level is applied, the force concentrates on the position where the rigidity is low, and the rotation in the circumferential direction is not constant. Such a decrease in rotational stability may hinder casting of the device to an accurate point.

[0005] By matching the winding start side and the winding end side,
The above-mentioned problem can be solved if no thickened portion is formed. However, it is not practical because very high precision is required for the dimensions of the prepreg, the pressure at the time of winding, and the like. SUMMARY OF THE INVENTION An object of the present invention is to provide a rod body having a high rotational stability in the circumferential direction, which can be easily manufactured, and a method for manufacturing the same.

[0006]

A method of manufacturing a rod according to a first aspect of the present invention is a method of manufacturing a rod constituting a fishing rod, and includes the following steps. ◎ A step of arranging the winding start side of the prepreg on the rod-shaped core in a state inclined with respect to the axial direction of the core.

[0007] A step of winding a prepreg around a core material to obtain a rod material. ◎ Process of firing rod material. ◎ Process of extracting heartwood. In this case, since the winding start side of the prepreg is arranged on the rod-shaped core material and wound in a state inclined with respect to the axial direction of the core material, the portion where the prepreg has started to be wound around the mandrel (winding start side) ) And a part that is thicker than another part generated between the wound part (winding end side) is also inclined with respect to the axial direction. That is, the thick portion is dispersed and shifted in the circumferential direction as it moves in the axial direction.
As a result, the strength of the rod in the circumferential direction is dispersed, and the rotation stability of the rod is improved.

The inclination of the winding start side with respect to the axial direction of the core is preferably such that one end and the other end of the winding start side corresponding to one end and the other end of the rod body are shifted by 360 degrees. preferable. A rod body according to a second aspect of the present invention is a rod body used for fishing, wherein a winding start side of a prepreg is arranged on a rod-shaped core in a state inclined with respect to the axial direction of the core, and the prepreg is wound around the core and fired It is a rod obtained by doing.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. (Structure of Fishing Rod) As shown in FIG. 1, a fishing rod adopting one embodiment of the present invention comprises a first rod 1 and a first middle rod 2 connected to the tip side of the former rod 1 in parallel. It has a second middle rod 3 connected to the tip side of the middle rod 2 and a tip rod 4 connected to the tip side of the second middle rod 3. The former rod 1 to the tip rod 4 are formed by winding a sheet-shaped prepreg in which a reinforcing fiber such as carbon fiber is impregnated with a resin around a mandrel, and have a tapered tip. It is cylindrical.

The original rod 1 has a rod grip 5 arranged at the end on the hand side and a front grip 6 arranged on the tip side of the rod grip 5. Further, a reel sheet 8 on which a reel 7 for winding the fishing line L is mounted is provided between the rod grip 5 and the front grip 6. In addition, former pole 1
The head rod 4 is provided with a line guide 9 through which the fishing line L can be inserted.

(Structure of the first rod body 2) As shown in FIG.
The first inner rod 2 is a tapered cylindrical member having a hollow portion 200 therein. The tip end side has a smaller inner peripheral diameter than other portions and is formed to be slightly thicker, and this portion serves as the fitted portion 2a. In addition, the rod base end has a smaller outer peripheral diameter than the other parts and is formed to be slightly thinner, and this part serves as a fitting part 2b. A fitting portion (not shown) formed on the second middle rod 3 connected to the tip of the first middle rod 2 is fitted into the fitted portion 2a, and the fitting portion 2b is The first rod 2 is fitted to a fitting portion (not shown) formed on the former rod 1 connected to the rod base side of the first rod 2.

As described in detail below, the first middle rod 2 has a winding start side of a prepreg arranged on a mandrel in a state inclined with respect to the axial direction of the mandrel, and the prepreg is wound around the mandrel and fired. It is a rod obtained by doing. (Method of Manufacturing First Middle Rod 2) The first middle rod 2 employing one embodiment of the present invention is manufactured as follows.

First, a releasing agent (not shown) such as wax is applied to the outer periphery of the mandrel 100, and a releasing tape (not shown) made of polypropylene resin is wound around the outer peripheral surface of the releasing agent. . Then, as shown in FIG. 3A, the prepreg 20 for the fitted portion for forming the fitted portion 2a is wound at a predetermined position on the tip side end. Next, as shown in FIG. 3A, the prepreg 30 is wound around the outer peripheral surfaces of the prepreg 20 for the fitted portion and the release tape. The prepreg 30 is a sheet-shaped prepreg obtained by impregnating a reinforcing fiber such as a carbon fiber with a resin. The part (winding start side) 30a where the prepreg 30 has started to be wound around the mandrel 100
Is set so that the left end L and the right end R of the winding start side 30a are shifted by 180 degrees on the circumference of the mandrel 100.
It is arranged to be inclined with respect to the direction of the axis 0 (see FIG. 4).
Further, a portion (winding end side) 30b of the prepreg 30 opposite to the winding start side 30a is formed to be longer in the width direction as the rod base side (the right side in FIG. 3). And FIG.
As shown in (b), the prepreg 30 is connected to the mandrel 10.
Wind while applying pressure to zero.

Incidentally, if necessary, another prepreg may be wound around the outer periphery around which the prepreg 30 is wound. Also,
An auxiliary prepreg may be wound around the rod-side end. Subsequently, as shown in FIG. 5, a protective tape (not shown) made of polyethylene terephthalate or polypropylene is wound around the outer periphery of the prepreg 30 to obtain a rod material. The obtained rod material is fired, the mandrel 100 is pulled out, and the protective tape and the release tape are sequentially peeled off. Thereafter, both ends are cut, and the outer peripheral surface of the rod base side end is shaved to form a fitting portion 2b. The surface treatment is further performed to manufacture the first inner rod 2.

The original rod 1 and the second intermediate rod 3 have the same configuration as the first intermediate rod 2 and are manufactured in the same manner. (Operation) The first inner rod 2 configured as described above is wound with the winding start side 30a of the prepreg 30 arranged on the mandrel 100 while being inclined with respect to the axial direction of the mandrel 100. A portion (see A in FIG. 5) which is thicker than other portions formed between the winding start side 30a and the winding end side 30b also becomes inclined with respect to the axial direction, and is formed after manufacturing. The portion thicker than the portion is dispersed in the circumferential direction of the rod body. As a result, the strength of the rod in the circumferential direction is dispersed, and the rotation stability of the rod is improved.

[0016]

The present invention will be described below with reference to examples. (Example 1) A prepreg (please give rough information on this prepreg) was arranged such that one end and the other end of the winding start side of the mandrel are shifted by 180 degrees on the outer periphery of the mandrel. This prepreg was wound around a mandrel for three turns and fired to produce a rod body having a length of 990 mm, a diameter of 3.9 mm on the tip side, and a diameter of 5.6 mm on the rod side.

(Example 2) The prepreg was arranged such that one end and the other end of the winding start side of the mandrel were shifted by 270 degrees on the outer periphery of the mandrel. Prepreg on mandrel 3
It was wound around the circumference and fired to produce a rod having a length of 990 mm, a diameter of 3.9 mm on the tip side, and a diameter of 5.6 mm on the rod base. (Example 3) The prepreg was arranged such that one end and the other end of the winding start side of the mandrel were shifted by 360 degrees on the outer periphery of the mandrel. Wrap the prepreg around the mandrel for three laps,
This is baked, length 990mm, diameter 3.9m on the tip side
m, a rod body having a diameter of 5.6 mm on the rod base side was manufactured. (Comparative Example) As in the prior art, the prepreg was arranged such that one end and the other end of the winding start side of the mandrel were along the axial direction of the mandrel. The prepreg is wound around the mandrel for three turns and then fired to have a length of 990 mm and a diameter of the tip side of 3.
A rod having a diameter of 9 mm and a diameter of 5.6 mm at the base of the rod was manufactured. (Experiment) Each of the rod bodies of Examples 1 to 3 and Comparative Example manufactured as described above was curved by applying a force of 200 g to the tip side while fixing the rod base side. In this curved state, each rod body was rotated both left and right in the axial direction, and the maximum value of the torque during both left and right rotations was measured. The results are shown in the table below.

[0018]

[Table 1]

As is clear from Table 1, the fishing rod manufactured by arranging the prepreg such that one end and the other end of the winding start side of the mandrel are shifted on the outer periphery of the mandrel has a maximum torque value as compared with the comparative example. And a good result is obtained. In particular, in the third embodiment, the maximum value of the torque is greatly reduced, and the change in the circumferential rigidity of the rod body is sufficiently small. [Other Embodiments] (a) When the one end L and the other end R of the winding start side 30a are arranged so as to be shifted by 360 degrees on the outer periphery of the mandrel 100, a portion thicker than other portions formed after manufacturing. Are preferably distributed over 360 degrees in the circumferential direction of the rod body.

[0020]

According to the present invention, the rod body is manufactured by disposing the one end and the other end of the winding start side of the prepreg so as to be shifted on the outer periphery of the mandrel. A rod body having high rotation stability can be provided.

[Brief description of the drawings]

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

FIG. 2 is an enlarged sectional view of a first middle rod.

FIG. 3 is a diagram illustrating a manufacturing process of a first middle rod, in which a prepreg is arranged on a mandrel (a) and a prepreg is wound (b).

FIG. 4 is a view taken in the direction of arrows IV-IV in FIG.

FIG. 5 is a perspective view showing a state in which a prepreg is wound around a mandrel.

FIG. 6 is a perspective view showing a state in which a prepreg is wound around a mandrel by a conventional method of manufacturing a rod body.

[Explanation of symbols]

 1 original rod 2 first middle rod 100 mandrel 200 hollow part 30 prepreg 30a winding start side 30b winding end side

Claims (2)

[Claims] 1. A method for manufacturing a rod body constituting a fishing rod, comprising: arranging a winding start side of a prepreg on a rod-shaped core in a state inclined with respect to an axial direction of the core; A method of manufacturing a rod body, comprising: winding a rod material around a core material, firing the rod material, and extracting the core material. 2. A rod used for fishing, wherein a winding start side of a prepreg is arranged on a rod-shaped core in a state inclined with respect to an axial direction of the core, and the prepreg is wound around the core and fired. The rod body you got.