JP4325826B2 - fishing rod - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fishing rod characterized by a layer structure of a fiber-reinforced resin rod.
[0002]
[Prior art]
2. Description of the Related Art A fiber reinforced resin steel plate using an epoxy resin or the like as a matrix and carbon fibers or the like as reinforcing fibers is manufactured by winding a so-called prepreg. If the number of windings of the prepreg wound around the core metal is the same over the entire length of the prepreg, for example, the front part is 3 times and the rear part is 3 times, there is no problem.
[0003]
[Problems to be solved by the invention]
However, when one prepreg is used and the number of turns is different between the front part and the rear part, such as 3 times for the front part and 4 times for the rear part, the number of turns is less than the decimal point in the middle of the longitudinal direction. Is the number of turns in the fractional number. This results in uneven thickness in the ridge after molding, bending of the material occurs during pressure heating molding, and also in the product bowl, there is uneven distribution of rigidity in the circumferential direction. A directionality occurs in the bag, which is not preferable.
Therefore, the present invention aims to provide a fishing rod having a high-quality rod with reduced directionality in the middle region in the longitudinal direction even when the number of windings of the prepreg differs between the front portion and the rear portion of the rod. To do.
[0004]
[Means for Solving the Problems]
In view of the above-described object, the present invention provides a layer structure of a fiber-reinforced resin cocoon according to claim 1, except for the prepreg for local reinforcement of the cocoon, wherein the cocoon has a plurality of N prepregs in a circle. It is formed by winding in the circumferential direction, and the total number of windings of the prepreg at the tip part is different from the total number of windings of the prepreg at the back part, and the position of each winding start edge is approximately ( A fishing rod having a rod characterized by being shifted by 360 / N) degrees and having the same width at each fractional part generated by winding of each prepreg at an arbitrary position in the longitudinal direction of the rod.
[0005]
If there is a reinforcing prepreg provided in a local part of the heel, this is considered to be excluded. As described above, when the total number of windings of the prepreg is different between the tip part and the rear part, the number of windings is inevitably in the middle region. For this reason, the prepreg to be used is divided into a plurality of N sheets in the winding direction. That is, a structure in which N prepregs are stacked. At that time, if each winding start end edge is shifted by approximately (360 / N) degrees, the fractional part of the winding part, which is the number of turns in the fractional part, is dispersed at the angular positions of N places in a substantially uniform arrangement. The directionality of is relaxed.
[0006]
According to a second aspect of the present invention, there is provided the fishing rod according to the first aspect, wherein the width of the fractional portion is 0 at the tip of the rod, and the width of the fractional portion increases from the tip toward the rod.
According to claim 3, wherein each of the N sheets of the prepreg, a width a wound direction, provide a fishing rod of substantially the same number of turns to be made dimension claim 1 or 2, wherein at the same position in the longitudinal direction of the rods To do.
If the thickness (layer thickness) is ignored, it is stated that each of the N prepregs has substantially the same size and shape. Even if the width dimension in terms of the number of turns in the direction, that is, the circumferential direction of the heel, is the same, the width dimension increases somewhat as it is located on the outside. However, if it can be said that the number of turns is approximately the same, the difference in actual size is considered to be within the error range.
There exists an effect similar to Claim 1 or 2 .
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in more detail based on an embodiment shown in the accompanying drawings.
FIG. 1 shows one prepreg P, which is wound around a core metal (not shown) to form a ridge. For example, if the number of windings is 1 at the front part A of the prepreg and 2 times at the rear part C, the number of windings is odd in the middle region. This will be described with reference to FIG. 2 schematically showing the winding state of the prepreg (or the cross-sectional view of the ridge after molding). In FIG. 6A corresponding to the front portion A, the winding start end edge F1 and the end edge F2 of the prepreg coincide with each other and the number of windings is one. The same applies to the following, but when the prepreg is actually wound as industrial production, a slight gap may occur or a slight overlap may occur even if the number of windings is aimed at just one time due to various errors. Although this may occur, such an error is not a problem in the present application, and in any case, it is called one winding. The same applies to two or more times.
[0008]
In FIG. 8C corresponding to the rear part C, the angle position of the winding start end edge F1 of the prepreg and the angle position of the end edge F2 coincide with each other, and the number of turns is two. However, in FIG. 6B corresponding to the intermediate position B, the winding ending edge F2 of the prepreg has a number of windings that is about a half turn greater in this case B than the winding start end edge F1. It has a fraction. The fractional part is hatched. A fishing rod having this rod has a directionality, and thus becomes a difficult fishing rod.
[0009]
In order to eliminate the above drawbacks, the present invention is disclosed. Referring to FIG. 3 and subsequent figures, as an example in which the number of windings of the front part and the rear part is different, the front part is 3 times and the rear part is 4 times. In the case of a wrinkled layer structure, it is not formed with a single prepreg, but the number of turns with the smaller number of turns, here the number of turns of the front part is 3, but divided into 3 Three prepregs P1, P2 and P3 are used. In this example, the prepreg shape is a trapezoidal shape formed by straight lines. And in this example, when the width dimension which is the winding direction to the metal core which is not illustrated of each prepreg is expressed by the number of windings at the same position in the longitudinal direction of the metal core (form of claim 3) However, as will be described later, the number of windings may be varied.
[0010]
That is, here, the front part of the prepreg P1 is one winding number, the rear part is 1.33 winding number (1 and 1/3 winding number, and so on), and the prepreg P2 leading part is The dimensions are set so that the number of turns is one, the number of turns at the rear is 1.33, the number of turns at the front of the prepreg P3 is 1.3, and the number of turns at the rear is 1.33. Because of the thickness relationship, the slightly larger dimension of the prepreg located on the outer side results in the same number of turns as the inner prepreg, so the actual dimension differs for each prepreg. Therefore, in the present specification, dimensions other than those specified are expressed by the number of turns.
[0011]
The width WA1 of the front portion (left side in FIG. 3) of the prepreg P1 is one time, the width WC1 of the rear portion is 1.33 times, the width WA2 of the front portion of the prepreg P2 is one time, and the width WC2 of the rear portion is 1.33. The width WA3 of the front part of the prepreg P3 is one time, and the width WC3 of the rear part is 1.33 times. First, the prepreg P1 is wound around a core bar (not shown), and the winding start edge FL1 is wound in parallel to the core of the core bar. The winding start edge FL2 of the next prepreg P2 is wound from a position separated from the winding start edge FL1 of the prepreg P1 by (360/3) degrees, that is, 120 degrees in the winding direction. The remaining prepreg P3 is also wound from a position where its winding start edge FL3 is separated from the winding start edge FL2 of the prepreg P2 by 120 degrees in the winding direction.
[0012]
If this is expressed by the rear end of the heel, winding is performed from a position where the rear end of the winding end edge FL1 ′ of the prepreg P1 and the rear end of the winding start edge FL2 of the prepreg P2 are brought into contact with each other, and further, the prepreg P2 Winding is started from a position where the rear end of the winding end edge FL2 ′ is brought into contact with the rear end of the winding start end edge FL3 of the prepreg P3.
Then, it is heated under pressure by a conventional method to form a ridge.
[0013]
FIG. 4 showing a schematic cross-sectional view of the soot formed in this way is a front part of the scissors, FIG. 5 is an intermediate part, and FIG. 6 is a rear part. In FIG. 4, the winding start edge FL1 and the termination edge FL1 ′ of the prepreg P1 coincide with each other, and the winding start edge FL2 of the next prepreg P2 is positioned in the position and the winding direction of the winding start edge FL1 of the prepreg P1. Since the leading edge width WA2 of the prepreg P2 is one turn, the winding start end edge FL2 and the end edge FL2 ′ coincide with each other. Further, the winding start end edge FL3 of the prepreg P3 is shifted by about 120 degrees in the winding direction from the position of the winding start end edge FL2 of the prepreg P2, and the prepreg P3 also has the tip width WA3 of one turn. The rotation start edge FL3 and the terminal edge FL3 ′ coincide with each other.
[0014]
In FIG. 6, the winding end edge FL1 ′ of the prepreg P1 exceeds the position of the winding start edge FL1 by 1/3 turn, which is shown as a hatched fractional part ΔP1. The winding start edge FL2 of the prepreg P2 is separated from the position of the winding start edge FL1 of the prepreg P1 by 120 degrees in the winding direction, and the winding end edge FL2 ′ of the prepreg P2 is the winding start edge. The position is over by 1/3 turn with respect to the position of FL2, which is shown as a hatched fractional part ΔP2. The winding start edge FL3 of the prepreg P3 is separated by 120 degrees in the winding direction from the position of the winding start edge FL2 of the prepreg P2, and the winding end edge FL3 ′ of the prepreg P3 is the winding start edge. The position is over by 1/3 of the position of FL3, which is shown as a hatched fractional part ΔP3.
[0015]
FIG. 5 is an intermediate state between the state of FIG. 4 and the state of FIG. 5, and the end edge FL1 ′ of the prepreg P1 exceeds the start edge FL1 by a predetermined fraction, and that portion is ΔP1. It shows with. The ending edge FL2 ′ of the prepreg P2 exceeds the predetermined edge by a predetermined fraction with respect to the starting edge FL2, and the portion is indicated by ΔP2. The end edge FL3 ′ of the prepreg P3 exceeds the start edge FL3 by a predetermined fraction, and the part is indicated by ΔP3.
[0016]
As described above, the fractional parts ΔP1, ΔP2, and ΔP3 of each prepreg excluding the front part of the heel are located at angular positions that are 120 degrees apart from each other at each cross-sectional position. For example, FIG. Is prevented from being biased to one side on the circumference, and the directionality of the heel is prevented. This is because the prepregs P1, P2, and P3 are not the same type of fiber reinforced resin material (the matrix resin is the same type, the reinforced fibers are the same type, the fiber directions are approximately the same, and the thickness is approximately the same). This also holds in the sense that the fractional part is dispersed in the circumferential direction. However, the same kind of fiber reinforced resin further prevents the directionality.
[0017]
Consider the case where the winding number of the front part is 4 and the winding number of the rear part is 5, taking the case where the prepreg is divided into three trapezoidal shapes. The width of the leading edge of the first sheet is one time, the width of the trailing edge is 1.33 times, the width of the leading edge of the second sheet is two times, the width of the trailing edge is 2.33 times, the leading edge of the third sheet The width can be set to one time, and the rear width can be set to 1.33 times. In this case, compared with the case shown in FIGS. 4 to 6, the number of windings of the second prepreg is increased by one, but the others are the same. That is, the distribution state of the fractional part is similarly shifted by 1/3 round. Therefore, the directionality of wrinkles is prevented. That is, the total number of windings of the front part and the total number of windings of the rear part may be divided so as to be an integer number.
[0018]
In the case of the prepreg for directing the reinforcing fibers of the ridges to be formed generally in the axial length direction, for example, the prepreg P1 of FIG. 3 is wound along the direction of the reinforcing fibers S as shown in FIG. It is a trapezoid having a shape as shown in the figure, with the start edge FL1 cut. However, in this shape, the greater the number of windings on the core bar, the greater the reinforcing fibers near the winding end edge FL1 ′ are inclined with respect to the core of the core bar. Therefore, it becomes one cause which produces the directionality of a wrinkle, when a raw material bends by thermoforming. In order to reduce this, as shown in FIG. 8, the winding start edge fL1 and the winding end edge fL1 ′ are cut and formed so as to be symmetrical with respect to the center line CL along the direction of the reinforcing fiber S. Prepreg P1 ′.
[0019]
That is, the width of the upper base of the prepreg P1 ′ is WA1, and the width of the lower base is WC1, but the remainder excluding the central portion L1 (= WA1) is on the winding start edge side and the winding end edge side. Each has an equal length L2, which is half the value obtained by subtracting the width dimension WA1 from the width dimension WC1 of FIG. When winding this prepreg P1 ', the winding start end edge fL1 is not parallel to the core of the core bar, and the center line CL is parallel to the core of the core bar to the core bar of the prepreg P1'. Although it is desirable that the direction of the reinforcing fiber S by winding is most difficult to deviate from the bus line direction, this center line is a virtual line, so that the work efficiency is poor. Therefore, out of the long side of the rectangle whose short side is the L1 part which is a part of the lower base, the side UL (indicated by a two-dot chain line) closer to the winding start edge fL1 is aligned to be parallel to the generatrix. Wrap it.
[0020]
Therefore, the winding end of the rear portion of the prepreg P1 ′ wound in this state is a position wound by (L1 + L2) times from the position of the side UL having the reinforcing fiber parallel to the bus bar. This is based on the position UL of the reinforcing fiber parallel to the generatrix, using the prepreg P1 of FIG. 7, and less than the winding method described in FIG. The inclination of the reinforcing fiber with respect to the generatrix direction is reduced, and the directionality is reduced accordingly.
[0021]
In the present application, regardless of whether the prepreg as shown in FIG. 7 is used or the prepreg as shown in FIG. 8 is used to perform the winding as described above, each winding start edge of the N-sheet prepreg is approximately (360). / N) degrees of shift are unchanged and both are within the scope of the claims.
[0022]
【The invention's effect】
As is clear from the above description, according to the present invention, even when the number of prepreg windings is different between the front part and the rear part of the scissors, the high-quality scissors with reduced directionality in the middle region in the longitudinal direction. It is possible to provide a fishing rod having
[Brief description of the drawings]
FIG. 1 is a drawing of a prepreg used in a conventional scissors.
FIG. 2 is a cross-sectional view at each position of a conventional bag.
FIG. 3 is a drawing of a prepreg used for a rod of a fishing rod according to the present invention.
4 is a cross-sectional view of a tip portion of a ridge formed by the prepreg of FIG. 3. FIG.
FIG. 5 is a cross-sectional view of a midway portion of a ridge formed by the prepreg of FIG. 3;
6 is a cross-sectional view of a rear portion of a ridge formed by the prepreg of FIG. 3. FIG.
FIG. 7 is a drawing showing directions of reinforcing fibers in the prepreg shown in FIG. 3;
FIG. 8 is a drawing of a prepreg having another shape in place of the prepreg of FIG. 7;
[Explanation of symbols]
P1, P2, P3 Prepreg FL1, FL2, FL3 Winding start edge FL1 ', FL2', FL3 'Winding end edge

Claims (3)

A layer structure of fiber reinforced resin cocoons, except for the reinforced prepreg of the heel, wherein the heel is formed by winding a plurality of N prepregs in a circumferential direction, The total number of windings of the prepreg at the tip of the heel is different from the total number of windings of the prepreg at the back of the heel, and the position of each winding start edge is shifted by approximately (360 / N) degrees . A fishing rod having a rod, characterized in that, at an arbitrary position in the longitudinal direction, the width of each fractional portion generated by winding each prepreg is the same . The fishing rod according to claim 1, wherein the width of the fractional portion is 0 at the tip of the rod, and the width of the fractional portion increases from the tip toward the rod. The fishing rod according to claim 1 or 2 , wherein a width in the winding direction of each of the N prepregs is a dimension that provides substantially the same number of windings at the same position in the longitudinal direction of the rod.

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