JP2000236781A - Rod body for fishing rod, internally threadable fishing rod and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a rod body for fishing rod improved in torsional rigidity on the tip side and in both bending and collapsing rigidity on the basal end side. SOLUTION: This mildly conical rod pipe for fishing rod is obtained by hollowly winding a prepreg sheet prepared by impregnating a reinforcing fibrous sheet unidirectionally arranged in parallel with a synthetic resin so as to substantially orient the reinforcing fibers axially, and then by winding cross tapes 2, 4 made by weaving warps and wefts at least as the inner layer and outer layer or intermediate layer of the rod pipe; wherein the cross tapes 2, 4 are wound in such a way that the respective winding angles θ of the resulting layers with the axis of the rod pipe become gradually larger from the tip toward the basal end of the rod pipe.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fishing rod, a hollow fishing rod and a hollow fishing rod having a torsion rigidity at the tip end of the fishing rod at right and left sides and high rigidity against bending and crushing at the base end. About the method.

[0002]

2. Description of the Related Art A fishing rod formed by winding a carbon yarn or a carbon drawing tape around an outer periphery of a hollow rod body or a solid rod body (hereinafter referred to as "solid") for forming a fishing rod has a torsional rigidity. The torsional rigidity in the left-right direction must be the same in order to increase the rigidity. For this purpose, it is necessary to wind the above-mentioned carbon yarn or carbon-pulling tape in a cross-shaped oblique manner.

However, when wound in a twill pattern, the carbon yarn and the carbon drawing tape cross each other, and when they overlap, the carbon fiber bends in and out of the fishing rod. There is a risk of cutting.

Also, when winding a carbon yarn, there is a disadvantage that if the tension is increased at the time of winding, the yarn is easily cut and fluff is formed. Since the carbon fibers are arranged only in the direction, if the tension is increased during winding, the tape shrinks in the short direction and the tape width becomes narrow, so that there is a disadvantage that wrinkles are easily formed.

[0005] Further, where the carbon yarn or the carbon drawing tape overlaps and overlaps with each other, the winding with the winding tape is incomplete, and air bubbles are easily generated, and if the air bubbles remain, blisters are generated after painting. However, there is a problem that the coating film is peeled off from that portion.

As a means for solving the above problem, Japanese Patent Publication No. 4-1
No. 4870 has a drawing sheet (or drawing tape) or plain weave cloth (or cloth tape) in the inner layer, a unidirectional drawing prepreg in which fibers are arranged in the axial direction in the intermediate layer, and a high level in the outer layer. A laminated pipe such as a fishing rod is disclosed in which a cross prepreg formed by weaving strength fibers is wound so that the woven fibers maintain a predetermined angle with respect to the axial direction. In this case, the predetermined angle is
The angles are substantially the same (from 40 to 50 degrees with respect to the axial direction in the embodiment) from the proximal end to the distal end of the laminated tube.

Japanese Patent Application Laid-Open No. 9-37684 discloses that a release tape is spirally wound around a core bar at a predetermined interval, a thin film is put on the tape, and a guide forming material is spirally wound in a gap between the release tapes. There is a disclosure that a rod body is formed by winding a prepreg of a rod body from above. It is assumed that a one-way aligned sheet is used as the prepreg.

In Japanese Patent Application Laid-Open No. Hei 9-182545, in particular, since a penetrating fishing rod is formed so as to be able to bend largely while keeping its inner diameter large, the direction of the reinforcing fibers is set in the axial direction of the cored bar. There is a disclosure that a prepreg sheet provided to be inclined at an angle of 45 degrees is wound.

[0009]

However, the tip of a fishing rod generally has sufficient rigidity against bending and crushing, but is weak against torsion, so that it is necessary to impart torsional rigidity. On the other hand, although the base end has high torsional rigidity, it is weak against bending and crushing, so it is necessary to provide bending rigidity and crushing rigidity.

Nevertheless, in the above laminated tube, since the cross prepreg is wound at substantially the same angle (the fiber is 40 to 50 degrees with respect to the axial direction) from the base to the tip, the torsional rigidity is obtained. However, the bending rigidity and the crushing rigidity of the base end cannot be improved. This is because, as shown in FIG. 5, the torsional rigidity (shear modulus M) is
It is the highest when the angle θ of the fiber with respect to the axial direction of the rod is 45 degrees, and decreases at the same descent rate regardless of whether the angle is larger or smaller. On the other hand, the bending rigidity and crushing rigidity (tensile elastic modulus T)
Is highest when the angle of the fiber with respect to the axial direction is 0 degrees,
It can be seen from a sharp decrease when the angle is larger than that. In other words, when the cross prepreg is wound so that the fiber is at an angle of 40 to 50 degrees with respect to the axial direction, as in the above-described laminated pipe, the torsional rigidity is high, but the bending rigidity and the crush rigidity are low. I will.

In general, since a fishing rod is formed in a tapered, gentle conical shape, when a cross prepreg is wound in a tape shape, even if it is wound from the base end to the tip at the same angle, the tape is formed into a tape. You have to change the winding pitch of the tape while winding,
Since a portion that cannot be wound or a portion that is wound repeatedly occurs, a desired torsional rigidity cannot be obtained due to uneven rigidity. Furthermore, there is a problem that the surface becomes irregularly uneven.

Also, in the through fishing rod disclosed in JP-A-9-37684, since the guide forming material is generally formed of carbon yarn or the like having a high elastic modulus, even if the prepreg is wound and pressed from above, the guide forming material is not required. However, the elastic force tends to bounce outward in the radial direction of the core metal, and the prepreg of the innermost layer usually has its fiber direction in the circumferential direction,
Since the prepreg also tends to bounce from the wound state, there are problems that the wound prepreg is peeled off from the thin film, and that the formed guide forming material cannot sufficiently project to the inner surface of the tubular rod body.

The through fishing rod disclosed in Japanese Patent Application Laid-Open No. 9-182545 is wound around the same angle from the rod tip to the base of the rod. In addition, there is a problem that the required bending rigidity and torsional rigidity cannot be obtained at the pole base. In addition, since the separate prepreg sheets are separately wound, there is a problem that the prepreg sheet tends to rebound as in the rod body of Japanese Patent Publication No. Hei 4-14870.

Accordingly, an object of the present invention is to provide a rod body of a fishing rod which is simple to manufacture, has high torsional rigidity at the distal end, and has increased bending rigidity and crushing rigidity at the proximal end, and a method of manufacturing the same. And

[0015]

Means for Solving the Problems In order to achieve the above object, the invention according to claim 1 is directed to a prepreg sheet obtained by impregnating a synthetic resin into a reinforcing fiber sheet which is aligned in one direction, and the reinforcing fibers are mainly formed in the axial direction. A gentle cone provided with a layer formed by winding a cross tape (2, 4, 9, 10) in which weft and warp are woven at least on an inner layer, an outer layer, or an intermediate layer of a rod body which is hollowly wound so as to be oriented. In a rod-shaped fishing rod, a layer formed by winding the above-mentioned cross tape (2, 4, 9, 10) is formed by moving the cross tape (2, 4, 9, 10) from the distal end to the proximal end of the rod. A rod body of a fishing rod provided to be wound so that the winding angle (θ) with respect to the axis of the body becomes gradually larger is adopted.

[0016] The invention according to claim 2 is characterized in that the weft and the warp are formed on the outer layer or the intermediate layer of the rod body which is formed by solidifying the reinforcing fibers impregnated with the synthetic resin so that the reinforcing fibers are mainly oriented in the axial direction. In a rod body of a gentle conical fishing rod provided with a layer formed by winding a cross tape (2, 4, 9, 10) woven with Winding angle (θ) of the cross tape (2, 4, 9, 10) with respect to the axis of the rod body from the tip to the base end of the rod body
Is adopted so as to be gradually wound and provided.

In the invention according to claim 3, the cross tape (2, 4, 9, 10) is formed by being wound so that the feed pitch in the axial direction is the same. The rod body of the fishing rod described in 2 is adopted.

Further, in the invention according to claim 4, in the cloth tape (2, 4, 9, 10), the amount of weft is within a range of ± 50% with respect to the amount of warp. The rod body of the fishing rod according to any one of the items 3 is adopted.

According to a fifth aspect of the present invention, there is provided a rod in which a prepreg sheet obtained by impregnating a synthetic resin into a reinforcing fiber sheet aligned in one direction is hollowly wound so that the reinforcing fibers are mainly oriented in the axial direction. Cross tape (2,4,9,1) in which weft and warp are woven on at least the inner layer, outer layer or intermediate layer of the body
0), the layer formed by winding the above-mentioned cross tape (2, 4, 9, 10) is a cross tape (2, 4, 9, 10). From the distal end to the proximal end of the rod body, a through fishing rod is provided which is wound so that the winding angle with respect to the axis of the rod body gradually increases.

The invention according to claim 6 is the invention according to claim 5, wherein the cross tape (2, 4, 9, 10) is wound so as to have the same feed pitch in the axial direction. Adopt a through fishing rod.

According to a seventh aspect of the present invention, there is provided a cored bar (5).
Cloth tape (2, 4, 9, 10) in which a releasing tape (6) and a fishing line guide forming material (7) are alternately wound in a spiral or ring shape, and a weft and a warp are woven thereon. From the distal end to the proximal end of the rod body so as to gradually increase the winding angle with respect to the axis of the rod body.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a rod body of a fishing rod according to the present invention,
An embodiment of a through fishing rod and a method of manufacturing the through fishing rod will be described.

The present invention provides at least an inner layer and an outer layer of a rod body in which a prepreg sheet obtained by impregnating a synthetic resin into a reinforcing fiber sheet aligned in one direction is hollowly wound so that the reinforcing fibers are mainly oriented in the axial direction. Alternatively, in a rod body of a gentle conical fishing rod provided with a layer formed by winding a cross tape woven of a weft and a warp in an intermediate layer, the layer formed by winding the cross tape is such that the cross tape is formed from the tip of the rod body. This is a rod body of a fishing rod provided to be wound so that the winding angle with respect to the axis of the rod body gradually increases toward the end.

A reinforcing fiber impregnated with a synthetic resin is wound around a cross tape in which a weft and a warp are woven around an outer layer or an intermediate layer of a solid rod body such that the reinforcing fibers are mainly oriented in the axial direction. In a rod body of a loose-cone fishing rod provided with a layer formed by turning, the layer formed by winding a cross tape gradually turns the winding angle with respect to the axis of the rod body from the tip of the rod body to the base end of the cross tape. It is a rod body of a fishing rod characterized by being wound so as to be large.

When the above-mentioned cross tape is wound from the distal end to the proximal end of the rod body so that the winding angle with respect to the axis of the rod gradually increases, the cross tape has the same feed pitch in the axial direction. Can be wound around.

The cloth tape is made of carbon, graphite, or the like in the longitudinal direction (warp) and the transverse direction (weft) of the cloth.
A cross-prepreg made by impregnating a thermosetting resin such as epoxy resin into a reinforcing fiber sheet that is oriented and reinforced with high elasticity and high-strength fibers such as boron, amide, ceramic, glass, or metal, and cut into a predetermined width to form a tape It was made.

This cross tape is wound at the same pitch in the axial direction from the distal end to the proximal end or from the proximal end to the distal end.

The fishing rod has a tapered gentle cone shape, and a cross tape is wound around the outer peripheral surface of a hollow or solid rod body for forming a fishing rod from the tip to the base or from the base to the tip. In this fishing rod, the cross tape is made of a sheet or cloth in which the circumferential fibers are aligned in the innermost layer and the outermost layer in addition to the solid for forming the fishing rod, and the intermediate layer is aligned in the axial fibers in the intermediate layer. It may be wound around a laminated tube or the like formed by using a sheet or cloth.

The width of the cross tape is the tip (the side with the smaller diameter)
To the base end (larger diameter side), and the cross tape is wound so that the angle formed by the warp with respect to the axial direction becomes gradually smaller toward the front end.

At this time, the relational expression E of the outer diameter D of the rod body, the winding pitch L of the cross tape, and the winding angle θ of the cross tape (in this case, the calculation is performed assuming that the rod body is a cylindrical object). ) Is as follows.

L / D * π = Tan (90 ° −θ) E π: Pi

Here, from the viewpoint of simplicity in manufacturing, the cross tape is wound with a constant winding pitch L (the same pitch) so as to be easily wound.

Here, the same pitch means the center P in the width direction of the cross tape 2 at the time of winding as illustrated in FIG.
_{1, P 2, P 3,} ... P n-2, P n-1, it refers to match the feed length L ₁ of P _n.

When the winding angle of the warp with respect to the axial direction is within the range of ± 30 to 45 degrees at the tip of the fishing rod, the torsional rigidity of the tip is preferably high.

The cross-tape winding pitch L ≒ the width of the cross-tape may be such that the cross-tapes are wound closely together at their side ends, or the cross-tape winding pitch L <cross-tape The tape may be wound so that the side edges of the tape overlap each other, or the winding pitch of the cross tape L> the width of the cross tape may be wound so that the tapes do not contact each other.

At this time, the cross tape may be wound over the entire area from the distal end to the proximal end, or may be wound only on an arbitrary part of the fishing rod.

In the cloth tape, the amount of weft may be within a range of ± 50% with respect to the amount of warp. This makes it possible to select a tape that is easy to wind in accordance with the outer diameter of the fishing rod. At this time, the right and left torsional stiffnesses are different, but there is no problem in use.If the range exceeds this range, the difference in the shear modulus M becomes large and the left and right torsional stiffnesses become large. Not preferred.

In the cloth tape, another kind of fiber may be used within a range of ± 50% of the weft to the warp.

The present invention also relates to at least an inner layer of a rod body in which a prepreg sheet obtained by impregnating a synthetic resin into a reinforcing fiber sheet aligned in one direction is hollowly wound so that the reinforcing fibers are mainly oriented in the axial direction.・ In a moderately conical fishing rod provided with a layer formed by winding a cross tape woven of a weft and a warp in an outer layer or an intermediate layer, the layer formed by winding the above-mentioned cross tape is the tip of the rod body. The fishing rod is provided so as to be wound so that the winding angle with respect to the axis of the rod body is gradually increased from to the base end.

In this through fishing rod, the cross tape can be wound so that the feed pitch in the axial direction is the same.

In addition, the through fishing rod is configured such that a releasing tape and a fishing line guide forming material are alternately wound in a spiral shape or a ring shape on a core metal, and a cross tape in which a weft and a warp are woven thereon is used as a rod. It can be manufactured by winding the rod so that the winding angle with respect to the axis of the rod gradually increases from the distal end to the proximal end of the body.

[0042]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

(Example 1) FIG. 1 shows a distal end and a proximal end of a slightly conical fishing rod formed by winding a cross tape 2 around a solid 1. FIG.

The solid 1 has a tip diameter of 1 mm on the front end side, an original diameter of 8 mm on the base end side, and a length of 1000 mm, and is formed by impregnating a carbon fiber in the axial direction with a thermosetting epoxy resin.

An epoxy resin adhesive is applied to the outer peripheral surface of the solid 1, and the cloth tape 2 is wound therefrom at the same winding pitch L ₁ in the axial direction from the front end to the base end.
Further, the cross tape 2 was wound around the outer peripheral surface of the solid 1 with a fastening tape (not shown) from above, and then heat cured.

The cloth tape 2 is made of carbon fiber warp (1).
K 4 yarns / cm) and carbon fiber weft (1K 4 yarns / cm)
cm), and a cloth prepreg formed by impregnating this with 42% by weight of a thermosetting epoxy resin is 2.36 m.
It was formed by cutting to a width of m.

The width of the cross tape 2 was set as described below. The carbon fiber warp was cut in the longitudinal direction of the cloth tape 2 and the carbon fiber weft was cut in the width direction of the cloth tape 2.

That is, in the present embodiment, the winding angle (the winding angle of the warp yarn 2a with respect to the axial direction A of the fishing rod) θ ₁ of the cross tape 2 at the front end is set so that the torsional rigidity is highest at the front end. It was set at about 45 degrees. This is based on the fact that the shear modulus M is highest and the torsional rigidity is highest when the winding angle is 45 degrees, as shown in FIG.

Therefore, in the above equation E, θ ₁ = 45 °
Then, the winding pitch L of the cross tape 2 is 3.14 m.
m.

Next, the winding pitch L ₁ of the cross tape 2 ≒
3.14 mm and the winding angle θ of the base cross tape 2
_{When 2} is calculated according to the above equation E, θ ₂ ≒ 82.9 °.

That is, the cross tape 2 is wound from the leading end to the base end, and is wound at the leading end at a winding angle of about 45 degrees, and gradually wound at a constant ratio as it is wound in the base end direction. The angle θ was increased, and the base was wound at an angle of about 82.9 degrees.

The tip of the fishing rod thus formed is
Since the winding angle θ ₁ of the cross tape 2 is about 45 degrees,
The winding angle θ ₁ of the warp yarn 2a with respect to the axial direction A of the fishing rod is about 4
5 degrees, and the winding angle of the weft 2b with respect to the axial direction A of the fishing rod is also about 45 degrees. Therefore, it was possible to obtain a tip having not only high torsional rigidity but also torsional rigidity equally to the left and right with respect to the axis of the fishing rod.

Meanwhile, the proximal end, since the winding angle theta ₂ of the cloth tape 2 is about 82.9 degrees, the winding angle theta ₂ with respect to the axial direction A of the fishing rod of the warp 2a 'at about 82.9 degrees Yes,
The winding angle of the weft 2b 'with respect to the axial direction A of the fishing rod is about 7.
Once. Therefore, the angle formed by the weft 2b 'and the axial direction A of the fishing rod is about 7.1 degrees, which is almost horizontal, and its tensile modulus of elasticity T in the axial direction A is extremely high as shown in FIG. We were able to. The angle between the warp thread 2a 'and the radial direction B (perpendicular to the axial direction A) of the fishing rod is also about 7.1 degrees, and the tensile modulus T in the radial direction B is very high. The base end had high rigidity against bending and crushing.

The torsional stiffness of the base end is determined by the warp 2
The winding angle θ ₂ of the fishing rod a ′ with respect to the axial direction A of the fishing rod is about 82.2.
Since the winding angle of the weft 2b 'with respect to the axial direction A of the fishing rod is about 7.1 degrees, the shear modulus of elasticity M is not high as shown in FIG. However, since the shear modulus M is symmetrical about the center of 45 degrees, the shear modulus M at about 82.9 degrees and about 7.1 degrees is equal, and therefore, the right and left with respect to the axis of the fishing rod. A base end having even torsional rigidity could be obtained.

As described above, it was possible to easily and surely manufacture a fishing rod having a tip-to-twisting tip, a bending-tolerant tip, and a well-balanced right and left balance of the entire rod.

(Embodiment 2) FIG. 2 shows a distal end and a proximal end of a gentle conical fishing rod formed by winding a cross tape 4 around a hollow rod tube 3.

The hollow rod tube 3 has a tip diameter of 0.8 m on the tip side.
m, Toray carbon prepreg 3052-1003 at the tip of a core metal with a base diameter of 5 mm and a length of 1000 mm at the base end.
Plies, cut at 5 ply at the base end,
It was formed by rolling according to a conventional method.

An epoxy resin adhesive is applied to the outer peripheral surface of the rod tube 3, and the cross tape 4 is wound therefrom at the same winding pitch L ₂ in the axial direction from the front end to the base end. After the cross tape 4 was wound around the outer peripheral surface of the rod tube 3 with a not-shown winding tape from above, a thermosetting treatment was performed.

The cross tape 4 is made of carbon fiber warp (1).
K 4 yarns / cm) and carbon fiber weft (1K 4 yarns / cm)
cm), and a cloth prepreg formed by impregnating 42% by weight of a thermosetting epoxy resin was cut into a width of 9 mm.

The width of the cross tape 4 was set as described below. The carbon fiber warp was cut in the longitudinal direction of the cloth tape 4 and the carbon fiber weft was cut in the width direction of the cloth tape 4.

That is, in this embodiment, in order to increase the torsional rigidity widely from the distal end toward the proximal end side, the winding angle of the cross tape 4 at the distal end (the winding angle of the warp 4a with respect to the axial direction A of the fishing rod). the times angle) θ ₃ was set to about 30 degrees.

Therefore, in the above equation E, θ ₃ = 30 °
Then, the winding pitch of the cross tape 4 is L ≒ 8.6 m
m.

Next, the winding pitch L ₂ of the cross tape 4 ≒
8.6 mm and the winding angle θ ₂ of the base cross tape ₂
Is calculated according to the above equation E, θ ₄ ≒ 66.5 °.

That is, the cross tape 4 is wound from the leading end to the base end, but is wound at a winding angle of about 30 degrees at the leading end, and gradually at a constant ratio as it is wound in the base direction. The winding angle was increased so that the base end was wound at about 66.5 degrees.

The tip of the fishing rod thus formed is
Since the winding angle θ ₃ of the cross tape 4 is about 30 degrees,
The winding angle θ _{3 of the} warp yarn 4a with respect to the axial direction A of the fishing rod is also about 3
0 degree, and the winding angle of the weft 4b with respect to the axial direction A of the fishing rod is about 60 degrees. Therefore, from FIG.
In addition to the high torsional stiffness at 0 degrees, the tip has the same torsional stiffness to the left and right with respect to the axis of the fishing rod because it exhibits the same torsional stiffness.

[0066] On the other hand, the proximal end, since the winding angle theta ₄ of cloth tape 4 is about 66.5 degrees, with the winding angle theta ₄ also about 66.5 degrees with respect to the axial direction A of the fishing rod of the warp 4a ' Yes,
The winding angle of the weft 4b 'with respect to the axial direction A of the fishing rod is about 2
It becomes 3.5 degrees. Therefore, the weft 4b 'and the fishing rod in the axial direction A
Was about 23.5 degrees, and as shown in FIG. 5, the tensile modulus T with respect to the axial direction A could be increased. The angle between the warp 4a 'and the radial direction B of the fishing rod (perpendicular to the axial direction A) is also about 23.5 degrees, and its tensile modulus of elasticity T with respect to the radial direction B is extremely high. The base end had high rigidity against bending and crushing.

Further, regarding the torsional rigidity of the base end, the warp 4
The winding angle θ ₄ of the fishing rod a ′ with respect to the axial direction A of the fishing rod is about 66.
5 degrees, and the winding angle of the weft 4b 'with respect to the axial direction A of the fishing rod is about 23.5 degrees. Therefore, as shown in FIG. However, since the shear modulus M is symmetrical about 45 degrees, the shear modulus M at the time of about 66.5 degrees and about 23.5 degrees is equal, and therefore, with respect to the axis of the fishing rod. A base end having an equal torsional rigidity was obtained.

In the case of the fishing rod thus formed, the winding angle of the cross tape 4 is about 30 degrees at the tip, and
It is about 66.5 degrees at the base end, but 2 degrees from the tip of the fishing rod.
Since the angle is about 45 degrees at the position of 45 mm, the torsional rigidity is the highest at this position.

Here, the carbon prepreg 3052
-1003 is formed by backing an ultra-thin glass cloth having a thickness of 0.03 mm on carbon fibers aligned in the axial direction, and is a material having extremely low torsional rigidity by itself, By twisting No. 4 as described above, the torsional rigidity could be increased. In particular, the winding angle of the cross tape 4 at 245 mm from the tip of the fishing rod is about 45 degrees, and the winding angle at the tip is also about 30 degrees. Thus, a fishing rod having very high torsional rigidity in a wide range was obtained. From the above, from the tip to the base end, it is strong against twisting as a whole, especially the torsional rigidity is very high over a wide range from the tip end, and the base end is strong against bending and crushing, and furthermore, a fishing rod excellent in left-right balance of the whole rod It could be easily and reliably manufactured.

Embodiment 3 As shown in FIG. 3, a release tape 6 and a guide forming material 7 are alternately spirally wound around a cored bar 5, and a cross tape 2 is shown in FIG. Winding was performed in the same manner as in Example 1, and a circumferential prepreg 8 was further wound thereon.

Since the cloth tape 2 is woven so that the fibers are orthogonal to each other, it does not jump up itself after winding, and the guide forming material 7 tends to jump radially outward from the cored bar 5. Hold down. In the illustrated example, the cross tape 2 is wound as the innermost layer of the tubular rod body. However, the cross tape 2 may be wound first, with the circumferential prepreg 8 wound first.

The cloth tape 2 is formed by weaving carbon fiber warp yarns (4 yarns / cm of 1K / cm) and carbon fiber weft yarns (4 yarns / cm of 1K / cm).
1. A cloth prepreg formed by impregnation with 2% by weight.
It was formed by cutting to a width of 36 mm.

When cutting the cross tape, the carbon fiber warp was aligned with the longitudinal direction of the cross tape 2 and the carbon fiber weft was aligned with the transverse direction of the cross tape 2. That is, in order to maximize the torsional rigidity at the tip of the rod, the winding angle θ ₁ (see FIG. 1) of the cross tape 2 at the tip was set to about 45 degrees. Further, as in the first embodiment, the winding pitch L of the cross tape 2 is approximately 3.14 mm.
And the winding angle θ _{2 of} the base cross tape 2 ク ロ ス 82.9
°. Under this condition, the cross tape 2 is wound from the leading end to the base end, and is wound at the leading end at a winding angle of about 45 degrees,
The winding angle θ was gradually increased at a constant ratio as the coil was wound in the proximal direction, and was wound at an angle of about 82.9 degrees at the proximal end.

Thereafter, a winding tape (not shown) was wound around the outer peripheral surface of the circumferential prepreg 14, and was subjected to a thermosetting treatment.

The tip of the fishing rod thus formed is
As in the case of Example 1, the distal end is resistant to twisting, the proximal end is resistant to bending and crushing, and the fishing rod with a good balance between left and right can be obtained as a whole rod. Further, it was possible to prevent the guide forming material 7 from jumping up from the surface of the cored bar 5 and to form a guide projecting sufficiently on the inner surface of the rod pipe.

(Embodiment 4) In Embodiment 3, the cross tape 2 was wound by only one strip from the base of the rod to the tip of the rod. However, in Embodiment 4, as shown in FIG. 7 is wound around the cored bar 5 (see FIG. 3), and then the cross tape 9 is wound from the base of the rod to the tip of the rod, and then the rod is wound so that the winding angle is symmetrical with respect to the axial direction. The cross tape 10 was wound again from the tip side to the rod base side.

By winding the two cross tapes 9 and 10 in different directions around the outer peripheral surface of the solid in this way, it is possible to more reliably prevent the guide forming material 7 from jumping up and further improve the torsional rigidity. I was able to.

[0078]

According to the first and second aspects of the present invention, the layer formed by winding the cross tape is such that the winding angle of the cross tape with respect to the axis of the rod gradually increases from the distal end to the proximal end of the rod. The following effects can be obtained because the winding is made larger. a) The desired torsional rigidity equivalent to the left and right sides can be easily and reliably provided. b) Especially when a lure or a weight such as a lure rod or a pole is thrown toward a target, the rod is prevented from being twisted right and left and shaken, so that the controllability of casting is improved. Further, when taking in fish that escape to the left and right, such as spatula, mejina, and gibbon, the rod is less likely to be twisted left and right, and fish is easier to take in. c) Since the winding angle of the longitudinal fiber with respect to the axial direction is small in the vicinity of the tip, the shear modulus is very high, and the torsional rigidity is reliably provided. In the base part, the winding angle is large, the tensile modulus of the fiber is increased, and the bending rigidity and the rigidity against crushing can be efficiently increased.

According to the third and sixth aspects of the present invention, since the winding angle of the tape with respect to the axial direction gradually decreases gradually from the base end to the tip end of the rod, wrinkles can be prevented. .

According to the fourth aspect of the present invention, since the amount of weft is within the range of ± 50% with respect to the amount of warp of the cross tape, a cross tape that is easy to wind according to the outer diameter of the fishing rod is selected. be able to.

According to the fifth aspect of the invention, the following effects can be obtained in addition to the effects obtained by the first aspect of the invention. In other words, since the cross tape is a fiber in which the fibers are straight and woven, there is little jumping after winding, and it is possible to suppress that the guide forming material tends to jump outward in the radial direction from the core during manufacturing. Therefore, it is possible to obtain a fishing line guide which is simple to manufacture and functions reliably.

According to the seventh aspect of the invention, the following effects can be obtained in addition to the effects obtained by the fifth aspect of the invention. In other words, when forming the main body of the fishing rod, the cross tape is wound so that the winding angle becomes smaller toward the rod tip, so that a uniform torsional rigidity is easily provided on the rod tip side, and a bending rigidity is provided on the rod base side. In addition, rigidity against immersion can be reliably provided. Further, when the guide body is provided on the inner surface of the fishing rod, the lifting of the guide body wound around the core metal can be reliably suppressed.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a first embodiment of the present invention, and is a schematic diagram of a fishing rod in a distal end side and a proximal end side in a state where a cross tape is solidly wound.

FIG. 2 is an explanatory view of a second embodiment of the present invention, and is a schematic diagram of a distal end side and a proximal end side of a fishing rod shown in a state in which a cross tape is wound around a hollow rod pipe.

FIG. 3 is an explanatory view of Embodiment 3 of the present invention, and is a partially cutaway schematic view of a fishing rod showing a guide forming material, a cloth tape, and the like wound around a cored bar.

FIG. 4 is an explanatory view of Embodiment 4 of the present invention, and is a schematic view of the distal end side and the proximal end side of a fishing rod in a state in which two cross tapes or the like are wound around a cored bar.

FIG. 5 is a graph showing a relationship between a shear modulus M in torsional rigidity, a tensile modulus T in flexural rigidity and crush rigidity, and an angle θ of a fiber with respect to an axial direction of a rod.

[Explanation of symbols]

 2, 4, 9, 10 ... cross tape 5 ... core metal 6 ... release tape 7 ... guide forming material L ... winding pitch A ... axial direction θ ... winding angle T ... tensile modulus M ... shear modulus

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B29C 67/14 BF Term (Reference) 2B019 AA02 AB03 AB13 AB14 AB15 AB16 AC00 4F100 AB01E AD11 AK01A AK53 AR00E BA04 BA05 BA06 BA10A BA10B BA14 BA22 CA23A DA11 DB03A DG01A DG12B DG12C DG12D DH01A EA011 EG002 EH032 EH51B EH51C EH51D EH51E EH512 EJ82A GB87 JA20A JA20B JA20C HA20C JA20D JK01 J18A14H03 AG03 A18A03A03A03A18 HT13 HT22

Claims (7)

[Claims] 1. A rod body in which a prepreg sheet in which a synthetic resin is impregnated into a reinforcing fiber sheet which is aligned in one direction and is wound hollow so that the reinforcing fibers are mainly oriented in an axial direction is at least an inner layer, an outer layer or an intermediate layer. In a rod body of a gentle conical fishing rod provided with a layer formed by winding a cross tape in which wefts and warps are woven in layers, the layer formed by winding the cross tape is a cross tape tapered from the tip of the rod body to the base end. A rod body of a fishing rod characterized by being wound so that the winding angle of the rod body with respect to the axis of the rod gradually increases. 2. A cloth tape in which a weft and a warp are woven around an outer layer or an intermediate layer of a solid rod body formed so that a reinforcing fiber impregnated with a synthetic resin is mainly oriented in an axial direction. In a rod body of a fishing rod of a conical shape provided with a layer formed by turning, the layer formed by winding the cross tape has a winding angle with respect to the axis of the rod body from the tip of the rod body to the base end of the cross tape. A rod body of a fishing rod characterized by being wound so as to become gradually larger. 3. The rod body of a fishing rod according to claim 1, wherein the cross tape is wound so as to have the same feed pitch in the axial direction. 4. The rod for a fishing rod according to claim 1, wherein the cloth tape has a weft yarn amount within a range of ± 50% of a warp yarn amount. body. 5. A rod body obtained by winding a prepreg sheet obtained by impregnating a synthetic fiber into a reinforcing fiber sheet aligned in one direction and hollow so that the reinforcing fibers are mainly oriented in the axial direction. In a moderately conical middle fishing rod provided with a layer formed by winding a cross tape in which wefts and warps are woven in layers, the layer formed by winding the cross tape moves the cross tape from the tip of the rod body to the base end. A through fishing rod, which is provided so as to be wound so that the winding angle of the rod body with respect to the axis of the rod body gradually increases. 6. The fishing rod according to claim 5, wherein the cross tape is wound so as to have the same feed pitch in the axial direction. 7. A releasing tape and a fishing line guide forming material are alternately wound around a core metal in a spiral shape or a ring shape, and a cross tape in which a weft and a warp are woven thereon is applied from the tip of the rod body to the base end. A method of manufacturing a through fishing rod, characterized in that the fishing rod is wound so that the winding angle of the rod body with respect to the axis becomes gradually larger.