JPH0549372A - Fishing rod and its production - Google Patents

Abstract

PURPOSE:To provide a fishing rod needless to change core metal's conventional shape, also giving desired performance in a relatively simple operation. CONSTITUTION:The objective cylindrical fishing rod R made up of a main fiber-reinforced resin layer TA and a sub-fiber-reinforced resin layer TB with the respective fiber directions S, S along the rod R's axial core Y direction and the layer TB smaller than the layer TA in dimension and also said fiber directions S, S crossed at a bias angle alpha.

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 a method for manufacturing the fishing rod, and more particularly to a technique for determining the condition of the rod.

[0002]

2. Description of the Related Art Conventionally, as a technique for determining the condition of a fishing rod, Japanese Utility Model Laid-Open No. 59-11675, or
There is a technique disclosed in Japanese Patent Laid-Open No. 62-292422. Among these techniques, in the former technique, different prepregs are used for the tip end side and the base end side to wind a fishing rod around a core material when manufacturing the fishing rod. , The strength is set differently on the tip side and the base end side of the completed fishing rod, and in the latter case, a sharp taper portion is formed in the middle part of the core material used in the production of the fishing rod to complete the difference in diameter. The fishing rod is configured to have different strengths on the tip end side and the base end side.

[0003]

Here, considering the above-mentioned conventional examples, in any of the examples, the desired tone can be determined relatively well by selecting the prepreg and setting the shape of the core material. Among the techniques, joining two types of prepregs in the front-back direction of a fishing rod may lead to a decrease in strength at this joining portion. Not only the prepregs are misaligned during winding, but also when the aligning type is used for any of the prepregs, the prepreg is likely to be crushed by the action of the pressure at the time of winding. There is room for improvement in terms of
In the latter of the conventional techniques, wrinkles are formed in the prepreg at the intermediate portion of the core metal when winding a single sheet-shaped prepreg, or the prepreg cannot be wound in a state where an appropriate pressure is applied, There is room for improvement in terms of workability during production. An object of the present invention is to configure a fishing rod and a method for manufacturing the fishing rod, in which the conventional shape of the cored bar does not need to be changed and the desired condition is obtained by a relatively simple operation.

[0004]

The first feature of the present invention is that a main fiber reinforced resin layer and a sub fiber reinforced resin layer are formed in a superposed state in which the respective fiber directions are along the axial direction of the rod. Together, the sub fiber reinforced resin layer is set to a size smaller in the axial direction of the rod than the main fiber reinforced resin layer, and the fiber direction between the main fiber reinforced resin layer and the sub fiber reinforced resin layer is a bias angle. The point is that they are formed into a cylindrical shape by intersecting at α,
Further, the present invention is characterized in that a draw-aligned sheet-shaped main prepreg and a draw-aligned sheet-shaped auxiliary prepreg whose dimension is set smaller than the main prepreg in the axial direction of the core material By superposing and joining in a state in which the directions intersect at the bias angle α, by winding this superposed product around the core material in a state where the fiber direction of each prepreg is along the axis of the core material, and firing. It is in the point of forming into a tubular shape, and its action and effect are as follows.

[0005]

According to the above characteristics, the structure is as shown in FIGS.
As shown in, since the sub fiber reinforced resin layer T _B is formed to have a short dimension in the axial Y direction of the rod R with respect to the main fiber reinforced resin layer T _A , when a force acts in the bending direction, , The main fiber-reinforced resin layer T _A is largely bent, and the main and sub fiber-reinforced resin layers T _A and T _B resist the area where the sub-fiber-reinforced resin layer T _B is present, so that the bending amount is small. Therefore, the strength in the direction of the axis Y can be greatly changed by the single rod R, and further, the respective fiber reinforced resin layers T _A ,
Since the fiber directions S 1 and S 2 of T _B intersect at the bias angle α, the resin layers are prevented from being torn by the respective drag forces of the fibers in the twisting direction and the compressing direction. Moreover, the According to a feature of the second invention, even at the time of rod fabrication be those core 1 is thin, each is at the time of winding of the core 1 prepreg P _A,
Since P _B is joined, no deviation occurs,
Moreover, even if a high pressure is applied to the prepregs P _A and P _B during this winding, the fibers of one prepreg block the displacement of the other fiber, which prevents crushing.
That is, in the present invention, the two fiber-reinforced resin layers T _A and T _B
Even if the taper-shaped core material 1 of the related art is formed by forming the above, by setting the dimension of the sub fiber reinforced resin layer T _B and selecting the material, the rod R in the axial center Y direction can be formed. it is possible to change the value of the strength, moreover, it is assumed to prevent the occurrence of tearing, also two prepreg P _a,
By overlapping P _B and joining them together, the workability during winding around the core 1 can be improved.

[0006]

As described above, the fishing rod and the manufacturing method therefor can be constructed in which the shape of the cored bar does not need to be changed and the desired condition can be obtained by a relatively simple operation. In particular, according to the present invention, the main and sub prepregs are wound at a time in a superposed state, so that there is an effect that the work becomes simpler as compared with the case where the prepregs are wound separately.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1 and FIG. 2, a sheet-like prepreg obtained by impregnating a draw-aligned carbon fiber with a thermosetting resin such as an epoxy resin has a mandrel 1 (an example of a core material) in a fiber direction S thereof. In a state of being substantially aligned with the axis X of
As shown in the figure, two main prepregs P _A and P _A are cut by cutting into a trapezoid. Next, as with the main prepreg P _A , a draw-and-align sheet-shaped prepreg is replaced with the main prepreg P _A.
So that the fibers of the main prepreg P _A and the fiber directions S, S thereof intersect at the bias angle α when superposed with each other, and the dimension of the mandrel 1 in the axial center X direction is smaller than that of the main prepreg P _A. , The auxiliary prepreg P _B is formed by cutting into the shape shown in FIG.

Further, the auxiliary prepreg P _B has a width D at the tip side portion which is equal to the circumferential length of the mandrel 1, and an inclined surface P _S which is cut obliquely at the tip portion to form stress. This sub prepreg P is configured for dispersion.
_B is the main prepreg P _{A for the} base end side part and the side edge part
And are joined to the main prepreg P _A in a state of being overlapped with each other. In this rod manufacturing method, the main prepreg P is used for the purpose of setting the tone and improving the strength of the base end side.
Site of the base end side of the auxiliary prepreg P _{C-matched A} and fiber direction auxiliary prepreg P _B, and are joined in a state superimposed by matching a portion of the side edges and portions of each of the sub-prepreg P _B .. Furthermore, in the manufacturing method of the rod, by joining by overlapping primary prepreg P _A in this upper surface, sub-auxiliary prepreg P _B, the state sandwiching the sandwich the P _C in two main prepreg P _A Configured.

Next, as shown in FIG. 3, the prepregs superposed as described above are attached to the mandrel 1, and the fiber directions S and S of the prepregs P _A and P _B are set on the basis of the axis X of the mandrel 1. The heat-shrinkable tape 2 is further wound on the upper surface of the roll, the wound product is baked at a predetermined temperature, the tape 2 is removed, and the mandrel 1 is pulled out to form a tubular shape. The molded product (1) is obtained, and thereafter both ends are cut, and surface treatments such as painting and polishing are carried out to obtain the rod R.

The rod R thus manufactured is shown in FIG.
As shown in (a) and (b), the main fiber reinforced resin layer T _A and the sub fiber reinforced resin layer T _B in which the fiber directions S and S are along the axis Y of the rod R are in inner and outer layers. Further, the main fiber reinforced resin layer T _A and the sub fiber reinforced resin layer T _B have their respective fiber directions S, S intersecting at a bias angle α, and a relatively light load is applied on the tip side thereof. Due to this, it bends greatly, and at the base end side, it becomes difficult to bend. Incidentally, FIG. 4 (b)
In FIG. 1, the main fiber reinforced resin layer T _A and the sub fiber reinforced resin layer T _B are shown in an independent state. However, these layers T _A and T _B are fused and integrated with each other during firing. Is becoming

[Other Embodiments] In addition to the above embodiments, the present invention is
For example, the winding amount when winding the stack on the core material is 1
Layers (1 ply) or multiple times,
Further, as the rod, it is possible to apply to the original rod in addition to the tip rod and the second rod, and it is also possible to carry out winding by using the prepregs of the main and the sub one by one. In the present invention, an adhesive may be used to bond the main and sub prepregs, or the viscosity of the prepreg itself may be used.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a perspective view showing a mandrel and a prepreg.

FIG. 2 is a plan view showing a mandrel and a prepreg.

FIG. 3 is a perspective view of a prepreg wound around a mandrel.

FIG. 4 is a partially cutaway side view and sectional view of the rod.

[Explanation of symbols]

1 Core material P _A Main prepreg P _B Sub prepreg R Rod S Fiber direction T _A Main fiber reinforced resin layer T _B Sub fiber reinforced resin layer X Core axis Y of rod Y Core axis α Bias angle

Claims (2)

[Claims] 1. A rod (R) for each fiber direction (S), (S)
Main fiber reinforced resin layer (T _A ) along the axis (Y) of the
And secondary fiber-reinforced resin layer (T _B) and thereby formed in a state superposed, the axial direction of the secondary fiber-reinforced resin layer the main fiber-reinforced resin layer (T _B) (T _A) from the rod (R) in set to a small size, and the main fiber-reinforced resin layer (T _a) and the fiber direction of the secondary fiber-reinforced resin layer (T _B) (S),
A fishing rod formed by intersecting (S) at a bias angle (α) to form a tubular shape. 2. A main sheet prepreg (P) having a draw-and-align type sheet shape.
_A ) and the parallel sheet type auxiliary prepreg (P _B ) whose dimensions are set smaller than the main prepreg (P _A ) in the axial center (X) direction of the core material (1) in the respective fiber directions ( S),
(S) are overlapped and joined in a state where they intersect at a bias angle (α), and the prepregs (P _A ), (P _B ) of the overlapped product have the fiber direction of the core material (1). A method for manufacturing a fishing rod, which comprises winding a core material (1) along a shaft core (X) and firing it to form a tubular shape.