JP3616228B2 - Fishing rod for fishing rod - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fishing rod, and more particularly, to a fishing rod for a fishing rod constituted by a prepreg sheet in which a reinforcing fiber is impregnated with a synthetic resin.
[0002]
[Prior art]
In general, fishing rods for fishing rods are formed by winding a prepreg sheet around a tapered cored bar, heating it, and then decentering the cored bar, A fishing rod is constructed by adding a plurality of such rods. In this case, the prepreg sheet wound around the core is used in various configurations depending on the use of the fishing rod, the required characteristics, the location where the rod is used, and the like, for example, the material of the reinforcing fiber in the prepreg sheet Conventionally, various configurations have been proposed with respect to the resin impregnation amount, the number of windings on the core, the laminated structure of the tubular body, and the like.
[0003]
By the way, normally, when a prepreg sheet is wound around a metal core, a prepreg sheet (also referred to as a main body prepreg) configured so that the number of windings on the heel side is equal to the number of windings on the base end side is used. It is done. However, when all the rods are molded with such a main body prepreg, the rigidity on the tip side becomes too large or the rigidity on the base end side is insufficient, so that the rod tube has a desirable bending state as a fishing rod. Disappear. Therefore, normally, a rod for fishing rod needs to be configured so that its rigidity gradually decreases from the base end side toward the tip of the rod.
[0004]
For this reason, in addition to the main body prepreg, a prepreg sheet (also referred to as an auxiliary prepreg) having a configuration in which the number of windings approaches 0 is used in addition to the main body prepreg. It has been. The auxiliary prepreg usually has a triangular shape so that the base end side is turned 1 to 2 times and the tip portion is turned about 0 times.
[0005]
[Problems to be solved by the invention]
However, when the auxiliary prepreg having the above-described configuration is wound around the core metal together with the main body prepreg, the winding state becomes a spiral shape, so that the thickness of the soot tube varies in the circumferential direction. If the soot tube has such a difference in wall thickness, the reinforcing fiber may bend during cooling after thermoforming, and the soot tube may be bent in a bow shape or partially bent. It is possible. That is, since a temperature difference occurs between the thermoforming process and the cooling process, the resin is thermally deformed (stretched) due to this temperature difference. However, if there is a thickness difference due to the spiral as described above, A difference occurs in the internal stress caused by the deformation, which makes it easier for the reinforcing fibers to deform, and the finally formed soot tube is curved or bent. Such bending and bending are particularly likely to occur in a small diameter tubule such as a tip.
[0006]
An object of the present invention is to provide a fishing rod for fishing rod having a structure in which bending, bending or the like hardly occurs at the time of molding in a fishing rod for fishing rod configured to include the above-described triangular auxiliary prepreg.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, a fishing rod for a fishing rod according to the present invention is formed by winding a main body prepreg sheet and an auxiliary prepreg sheet in which a reinforcing fiber is impregnated with a synthetic resin, and the auxiliary prepreg sheet has a substantially right triangle shape. formed of at least two pair, these two set of auxiliary prepreg sheets, that are coordinated so as to face to the inclined part of each other intersect, and wound such that the opposite direction of the spiral state It is characterized by.
[0008]
The auxiliary prepreg sheet having a substantially right-angled triangle shape has higher rigidity on the base end side with respect to the molded soot tube, and gradually decreases in rigidity toward the distal end side (flexibility on the distal end side of the soot tube). Giving the characteristics that the balance of the tone is improved by hardening the original side. At least one set of auxiliary prepreg sheets is provided, and the auxiliary prepreg sheets are disposed so that the inclined portions thereof face each other, so that the auxiliary prepreg sheets are spirally wound from both directions. In this way, since it is spirally wound from both directions, the influence on the bending due to the change in the wall thickness is canceled over the axial length direction, and it is difficult for the entire vertical tube to bend, bend, etc. Become.
[0009]
[Outline of the present invention]
The feature of the present invention is the shape, arrangement state, and winding state of the auxiliary prepreg sheet that gives the characteristic that the rigidity is reduced from the base end side to the tip end side in the molded tube. Therefore, with respect to prepreg sheets (main body prepreg, etc.) other than the auxiliary prepreg sheet that give such characteristics, the configuration of the assembling direction of the reinforcing fibers, the type, the resin impregnation amount, the thickness, etc. Various modifications may be made according to the required characteristics depending on the application, and there is no limitation.
[0010]
Further, at least one set of the above-described auxiliary prepreg sheets is provided, and each has a substantially right triangle shape so as to give the above-described characteristics. In this case, by making the auxiliary prepreg sheet into a substantially right triangle shape, the direction of the reinforcing fiber becomes the direction along the axis of the soot tube, so that the bending elasticity can be increased and the spiral bending can be prevented. Then, by providing a set of such auxiliary prepreg sheets and winding them around the core metal in a state where the inclined portions are opposed to each other, a symmetrical spiral winding state in opposite directions can be obtained. In addition, the substantially right triangle shape is not limited to an accurate right triangle, but may be any fiber as long as it can be in the axial direction as described above. Also good. In addition, the set of auxiliary prepreg sheets may be wound in a state of being overlapped in advance, or may be wound individually one by one. Therefore, a main body prepreg may be interposed between the auxiliary prepreg sheets.
[0011]
Furthermore, a set of auxiliary prepreg sheets have the same shape and the same configuration as each other, and when these are wound on the core metal so as to overlap each other accurately, each spiral state can be accurately symmetrical, This makes it possible to cancel out the cause of bending caused by the mutual auxiliary prepreg sheets generated by being spirally wound, and is most preferable. However, one set of auxiliary prepreg sheets may have different lengths in the axial length direction. The shapes may be slightly different from each other. That is, if the inclined parts of the auxiliary prepreg sheets are opposed to each other and the spiral direction when wound is reversed, the bending factors can be offset, so the shapes of each other are slightly different. Also good.
[0012]
Embodiment
Hereinafter, embodiments of the present invention will be specifically described with reference to the accompanying drawings.
(Embodiment 1)
FIG. 1 is a diagram illustrating an arrangement configuration example of prepreg sheets wound around a core metal 1. According to a conventional method, the fishing rod for fishing rod superposes the main body prepreg 2, the pair of auxiliary prepregs 5 and 6, the main body prepreg 8, and the auxiliary prepreg 9 for the joining portion in order on the cored bar 1. Then, the cellophane tape is wound and stabilized on it, and then the synthetic resin is heat-cured in a heating furnace, and after cooling, the core is removed, and the cellophane tape is peeled off, polished and painted. It is created through such processes. In addition, the part shown with the length 1 of the metal core 1 is a part actually used as a soot tube, and the other winding part becomes a cutting allowance.
[0013]
The main body prepreg 2 which is the innermost layer side is cut with respect to the core metal 1 so that the number of turns (1 to 2 plies) is the same on the front side and the base end side, and the carbon fibers are aligned in the circumferential direction. The prepreg sheet 2a having a thickness of 0.1 mm or less is lined with a woven fabric 2b having a thickness of 0.03 mm or less, such as a glass scrim sheet.
[0014]
Each of the auxiliary prepregs 5 and 6 has a right triangle shape so that the base metal 1 is usually ply 1-2 at the base end side and 0 ply at the tip end. It has been cut. The auxiliary prepregs 5 and 6 are formed by aligning carbon fibers in the axial direction and having a thickness of 0.08 mm or less, preferably 0.06 mm or less. In this case, the difference in thickness between the auxiliary prepreg 5 and the auxiliary prepreg 6 should be ± 0.06 mm or less, preferably ± 0.04 mm or less, and most preferably the same thickness. Moreover, it is good to make thickness thinner than the main body prepreg 2 for the purpose of suppressing the meandering of the main body fibers. Furthermore, it is preferable to make the average synthetic resin impregnation amount of the auxiliary prepregs 5 and 6 lower than that of the main body prepreg 2 so as to suppress the movement of the fibers at the time of molding and to prevent bending.
[0015]
The auxiliary prepregs 5 and 6 are arranged so that the inclined portions are opposed to each other, and are wound around the core metal 1 with the inclined portions opposed to each other. In this case, each of the auxiliary prepregs 5 and 6 may be partially overlapped and wound around the core bar 1, but the top part 5a and the top part 6b and the top part 5b and the top part 6a are made to coincide with each other on the base end side. Most preferably, it is wound around 1.
[0016]
The main body prepreg 8 which is the outermost layer side is cut with respect to the core metal 1 so as to have the same number of turns (1 to 2 plies) on the front side and the base end side, and the thickness is 0.1 mm or less. It is composed of a glass scrim sheet. Then, an auxiliary prepreg 9 for a joining portion in which carbon fibers are aligned in the axial direction is applied to the base end portion of the outer layer of the main body prepreg 8.
[0017]
In addition, it is preferable to provide the auxiliary prepregs 5 and 6 arranged so that the inclined portions face each other as an intermediate layer of the soot tube as in this embodiment. This is because the outer layer and the inner layer side are easily affected by bending.
[0018]
The configuration of the soot tube formed by the arrangement configuration example of the prepreg sheet shown in FIG. 1 is shown in FIG. As described above, the pair of auxiliary prepregs 5 and 6 have the same shape and the same configuration as each other, and these are wound so that the inclined portions are opposed to the cored bar 1 and are accurately overlapped with each other. Thus, the auxiliary prepregs 5 and 6 are spirally and symmetrically wound from both directions. In addition, the tip positions 5c and 6c of the auxiliary prepregs coincide with each other in the axial direction.
[0019]
As described above, when the auxiliary prepreg is in a spiral winding state, a thickness difference is generated in the soot tube, and this thickness difference is different from the internal stress due to the temperature difference in the cooling process after heat forming. This causes the tubule itself to bend or bend in the shape of an arc, but another auxiliary prepreg that causes such a factor is provided, and these inclined portions are opposed to each other so that each other can be accurately By being wound so as to overlap, the cause of the bending caused by the auxiliary prepreg in the spiral state can be offset, and the occurrence of bending, bending, or the like can be prevented in the finally formed soot tube.
(Embodiment 2)
The embodiment shown in FIG. 3 is a configuration example in which the shape of each sheet of a set of auxiliary prepregs is modified. As described above, the auxiliary prepregs preferably have the same shape and configuration as each other, but may be somewhat different from each other as described in detail below.
[0020]
As shown in the figure, the axial lengths of the auxiliary prepregs 15 and 16 may be slightly different. In this case, when the difference between the lengths of the two is d, the effect of canceling the above-described bending factors can be obtained within ± 25% of the length of the long auxiliary prepreg 15.
[0021]
Each of the auxiliary prepregs 15 and 16 may not be an exact right triangle, and may have a trapezoidal shape in which a part 16p parallel to a part thereof is formed like the auxiliary prepreg 16 shown in the drawing. According to this configuration, the number of turns of the auxiliary prepregs 15 and 16 on the base end side is different, but the difference in the number of turns is preferably less than 1 ply.
[0022]
As described above, even if the shapes of the auxiliary prepregs 15 and 16 are slightly different, even if the inclined portions of the auxiliary prepregs are opposed to each other and wound spirally from both directions, the factors of bending can be offset each other. . Although not shown, it is more preferable that the auxiliary prepreg 15 has the same shape as the auxiliary prepreg 16.
[0023]
Further, the main body prepreg 18 disposed on the outermost layer side of this embodiment is configured by overlapping a prepreg sheet 18a in which carbon fibers are aligned in the axial direction and a prepreg sheet 18b in which carbon fibers are aligned in the circumferential direction. Has been. Thus, the configuration of the main body prepreg can be variously modified.
(Embodiment 3)
The embodiment shown in FIG. 4 is a configuration example in which a main body prepreg 20 is interposed between a set of auxiliary prepregs 5 and 6 in the embodiment shown in FIG. As shown in FIG. 1, the auxiliary prepregs 5 and 6 are preferably wound in a polymerized state. However, as shown in this embodiment, a main body prepreg 20 is interposed between them. Also good. The configuration of the main body prepreg interposed therebetween can be variously modified. In this embodiment, the prepreg sheet 20a in which the carbon fibers are aligned in the circumferential direction and the prepreg in which the carbon fibers are aligned in the axial direction are provided. It is configured by stacking sheets 20b.
[0024]
Thus, even if the pair of auxiliary prepregs 5 and 6 are not in a superposition relationship with each other, as a result, the auxiliary prepregs 5 and 6 are spirally wound from both sides. Is possible.
[0025]
【The invention's effect】
As described above, the set of substantially right triangle shaped auxiliary prepregs constituting the soot tube is wound spirally from both directions, so that the influence of the bending due to the change in wall thickness is offset during molding. The occurrence of bending, bending, etc. is prevented as a fistula plug body. Moreover, by using such an auxiliary prepreg, the front side rigidity is flexible, the original side rigidity is increased, and the overall pipe and the strength balance are improved.
[Brief description of the drawings]
FIG. 1 is a diagram showing an example of an arrangement configuration of prepreg sheets wound around a core bar according to the first embodiment.
2 is a view showing a configuration of a soot tube formed by the arrangement configuration example of the prepreg sheet shown in FIG. 1. FIG.
FIG. 3 is a diagram showing an arrangement configuration example of a prepreg sheet wound around a core bar according to the second embodiment.
FIG. 4 is a diagram illustrating a configuration example of a prepreg sheet wound around a core bar according to a third embodiment.
[Explanation of symbols]
1 Core 2 Main body prepreg 5, 6 Auxiliary prepreg 8 Main body prepreg 9 Auxiliary prepreg (for joining)

Claims (3)

In a fishing rod for a fishing rod formed by winding a main body prepreg sheet and an auxiliary prepreg sheet in which a reinforcing fiber is impregnated with a synthetic resin,
The auxiliary prepreg sheets are formed substantially at least two pair having a right triangle shape, these two set of auxiliary prepreg sheets, and distribution to be opposed to the inclined portion of each other intersect, reverse fishing rods for rod pipe, characterized in that the wound such that the direction of the spiral state. The fishing rod for a fishing rod according to claim 1, wherein the auxiliary prepreg sheet is formed thinner than the main body prepreg sheet. The fishing rod for a fishing rod according to claim 1 or 2, wherein the auxiliary prepreg sheet is wound as an intermediate layer of the main body prepreg.

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