JP2000106793A - Internally threaded fishing rod - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an internally threaded fishing rod where resistance in threading a fishing line is diminished while retaining delicate sensibility of the fishing rod. SOLUTION: When this internally threaded fishing rod is made of a synthetic resin as a matrix and is reinforced with a reinforcing fiber, the fishing rod has a tip section 12 which has a reinforcing fiber having high elongation at break in the outside and has a reinforcing fiber having low elongation in the inside. As the reinforcing fiber having high elongation at break and low elastic modulus, 21 carbon fiber having <=ca. 7,000 kg/mm2 (68,600 N/mm2) can be employed. The tip section 12 is easy to bend, can have a large inside diameter and is difficult to be plastically deformed due to the manner of the above arrangement. The tip section 12 has ca. 2% elongaaion at break due to the employment of the above carbon fiber and is difficult to be broken.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fishing rod having a characteristic feature at its tip.

[0002]

2. Description of the Related Art Fishing rods have a certain condition. For example, fishing rods for small fish are set delicately.

[0003]

However, in the through fishing rod, since the fishing line is inserted through the inside of the rod tube and the line resistance needs to be reduced, the inner diameter of the rod tube at the tip cannot be made smaller than a predetermined value. . If the inner diameter of the tip is large, a delicate tone cannot be obtained, and it has conventionally been difficult to construct a fishing rod with a delicate tone through the inside.

Accordingly, an object of the present invention is to provide a fishing rod having a delicate tone as a through fishing rod which reduces the line resistance while maintaining the delicate tone.

[0005]

SUMMARY OF THE INVENTION In view of the above objects, according to the present invention, there is provided a reinforcing fiber having a synthetic resin as a matrix and having a large elongation at break as to a reinforcing fiber oriented substantially in the axial direction. And a spike portion in which small fibers are disposed on the inner side.

According to a second aspect of the present invention, the low-elasticity reinforcing fiber having a large breaking elongation is 7000 kg / mm ² (68 kg).
^{2. The} through fishing rod according to claim 1, wherein carbon rods having an elastic modulus of about 600 N / mm ² or less are used.
024, 0038).

According to the first aspect of the present invention, the reinforcing fibers having a large breaking elongation generally have low elasticity, the reinforcing fibers having a small breaking elongation have high elasticity, and the reinforcing fibers having a large breaking elongation are provided on the outside and the small fibers are provided on the inside. Because it is arranged, the tip is easy to bend,
The inner diameter can be increased, and plastic deformation is difficult. In the configuration according to the second aspect, since the breaking elongation is about 2%, it is difficult to break (element 0024).

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in more detail based on an embodiment shown in the accompanying drawings. FIG. 1 shows a form of through fishing rod. Casting handle 16
A front rod 10 is fixed in front of the base rod 10, and a head rod 12 is joined to the former rod 10 by a swing-out type or a parallel connection. A top guide 14 is provided at the tip, a mounting device 20 for a reel 18 is provided at the casting handle 16, and a fishing line introduction guide 24 is provided at the original rod 10. The fishing line 22 is introduced from the reel 18 through the fishing line introduction guide 24 to the inside.

FIG. 2 is an enlarged vertical sectional view of the tip rod 12. As shown in FIG.
In the present invention, the fishing rod may be a single rod instead of such a joint fishing rod. That is, the head portion in the present invention does not necessarily correspond to a rod tube named a head rod, but refers to a substantial head portion of a fishing rod. Therefore, 1
No. 2, No. 3 and No. 3
In some cases, only the forward part of the guard is used. The tip rod 12 formed by the method shown in FIG. 3 has four regions, namely, a tip a,
It is composed of an intermediate tip b, an intermediate c, and a base d.

First, this manufacturing method will be described with reference to FIG. The metal core 30 has a very gentle tapered substantially straight portion 30F in the front half (this corresponds to the tip portion) and a slightly large tapered portion 30R in the rear half, and the former 30F is 3/1000. The following substantially straight taper is preferred. In this case, the inner diameter of the tip of the formed rod is substantially straight, so that the inner diameter of the tip of the tip can be increased, and a hollow portion through which the fishing line can pass freely can be obtained, thereby reducing the line resistance. Through-hole structure becomes possible. This core 3
A tape-shaped or sheet-shaped reinforcing prepreg I is wound around 0. This reinforcing prepreg may be mainly composed of fibers oriented substantially in the circumferential direction, or may be a combination of ceramic fibers oriented substantially in the axial direction and a scrim sheet. This has the effect of reducing the resistance and preventing the inner surface of the rod tube from being worn. This reinforcing layer is not shown in FIG.

Next, a leading prepreg A having a slanted rear end is wound, an intermediate leading prepreg B having both slanted ends is wound thereon, and both ends are slanted. The formed intermediate prepreg C is wound, and finally, a front thin prepreg D having a slender front end is formed in a slanted shape. The lengths of these prepregs are A <B <C <D as shown in the figure, and are pre-tuned. When the tip rod 12 is formed by winding in the above order, the elasticity of the rear prepreg is higher than that of the front part, and the rear part is wound outside the front part, so that the rigidity difference between the front part and the rear part is given. It is preferable because it is easy to bend and the tip is easy to bend, and the inner diameter can be increased by that amount. Or may be wound. This tip part 3
The prepregs A and B and the first half of C are wound around 0F.

The reinforcing fibers used in the prepregs A, B, C, and D have different elastic moduli, and the elastic moduli are sequentially increased in a geometric progression from the front part a to the base part d. Selected. The term “sequential” in this specification refers to a main reinforcing fiber, except for a reinforcing fiber such as an auxiliary prepreg that is partially reinforced by fixing a guide or the like. For example, in the order of prepregs A, B, C, and D, 5000 kg /
mm ² (49000 N / mm ² ), 10,000 kg / m
m ² (98,000 N / mm ² ), 20,000 kg / mm
² (196000 N / mm ² ), 40000 kg / mm
² (392000 N / mm ² ). For example, the elastic modulus (kg / kg) of each type of fiber such as carbon fiber, alumina fiber, aramid fiber, techmilon (trade name), glass fiber, steel fiber, polyester fiber, and nylon fiber
mm ² (= 9.8 N / mm ² )), the order is generally 70,000 to 15,000 (5000 to 9000).
0), 25000 (10000-46000), 134
00 (6900-16300), 9000-10000
(6000-10000), 7400 (6400-87
30), is about 19400,1100,500, elastic modulus in this way a case is shown particularly widely within and over a wide range (parentheses, is the same kg / mm ² units), select these appropriately By doing so, a substantially desired value can be obtained.

[0013] Particularly, carbon fiber is 90000 kg / m
m ² (882000 N / mm ² ), below 5000
It exists up to about kg / mm ² (49,000 N / mm ² ) or less, and can be composed of only carbon fibers.
Such a structure having a changed elastic modulus may be combined with the following other embodiments. However, the geometric series in the present invention does not mean that the geometric series is set to a strict geometric series, but means that there is a considerable difference.

Among the carbon fibers, the elastic modulus is 7000 kg /
Those having low elasticity of about ² mm ² (68600 N / mm ² ) or less have considerable flexibility, and have a breaking elongation of about 2%, so that they are not easily broken, and can be suitably used as a tip portion or a tip portion of a tip portion. . In particular, when used as a reinforcing fiber in the axial direction, the bending rigidity can be reduced. In actual use, a prepreg in which the volume ratio of the low elastic carbon fiber is 50% or more is used. This low-elasticity carbon fiber may be used as a reinforcing fiber in each of the following embodiments.

The tip rod 12 thus formed has an inner diameter of a predetermined size through which the fishing line can be freely inserted up to the tip, and is more easily bent forward, and has a delicate bending characteristic. Through fishing rod can be provided. The length of each of the tip a, the middle tip b, the middle c, and the base d is preferably a <b <c <d. This is because it is easy to perform a tip action. Further, the thickness is preferably a ≦ b <c <d. This is because a larger bending force acts on the base portion.

In this embodiment, a ceramic guide ring G1 held by a holding member SG is provided at the rear end of the tip rod 12, and the bending characteristics are devised by using materials having different elastic moduli as described above. As a result, the inner diameter of the tip rod 12 can be set to be relatively large, which facilitates the arrangement of the ceramic guide ring, and the respective area portions a, b, c, and d.
Guide ring G2 at the connecting boundary of
G3 and the like are provided to reinforce the connection boundary portion and reduce the insertion resistance of the fishing line. A similar guide ring G4 is also provided at the end of the joint boundary between the top guide 14 and the tip rod 12.
However, a ceramic guide ring G5 is also provided at the tip of the top guide 14.

FIG. 4 shows another example of the tip rod 1 shown in FIG.
2 '. Each of the regions a ', b', c ', and d' has a joint structure formed by reverse joining or welding, but may be joined or spliced as in the case of ordinary joining, or they may be adhesively joined. May be. Further, it may be detachable by screwing. However, the connection structure of this embodiment is preferable because the inside can be easily formed large. Further, guide rings G2 ', G
3 'and the like are provided. In this structure, the guide ring can be arranged when the parts a ', b', c ', d' are connected,
The installation work is easy. The tip a 'may be a synthetic resin tube. Other structural features are the same as in FIG.

In FIG. 2, prepregs having fibers having different elastic moduli are used. However, even if the prepregs are formed of one kind of fiber, a synthetic resin is used as a matrix and a range of ± 30 degrees with respect to the axial direction. The inside fishing rod is reinforced by reinforcing fibers oriented substantially in the axial direction and reinforcing fibers oriented substantially in the circumferential direction within a range of ± 45 degrees with respect to the circumferential direction. It is formed in a substantially straight shape of 3/1000 or less, or in a gentle taper shape of about 6/1000, and the tip of the spike portion has a ratio of the substantially circumferential fiber of 5/1000.
0% or more, and the rear part is made 20% or less, and the reinforcing fiber (50% or less) in the substantially axial length direction at the tip of the spike is less than the rear part (80% or more). The tip portion is more likely to bend, and has the same bending characteristics as a through fishing rod having a tapered delicate tip. At the same time, since the inner diameter of the tip is formed substantially straight, the inner diameter of the tip of the tip can be increased, and a hollow portion through which the fishing line can freely pass is obtained. Will be possible.

In the present invention, not limited to the above-described embodiment, in the present invention, if a reinforcing fiber having a higher elasticity than the axial direction reinforcing fiber is used as the reinforcing fiber in the circumferential direction, it is crushed even though the bending rigidity is low and the bending is delicate. High strength, and can be made thinner and larger in diameter, contributing to weight reduction.

FIG. 5 shows a tip rod having another form of tip part. A through fishing rod having a main layer 12H having a reinforcing fiber oriented substantially in the axial direction, reinforced by a reinforcing fiber using a synthetic resin as a matrix, wherein
The resin layer 12I having a thicker front portion and a thinner rear portion is integrally formed inside the tip rod main body layer 12H by forming the front portion of 2H to be thin and the rear portion to be thick. The inner diameter of the tip portion, which is approximately the front half, is substantially straight or 6/1000 or less.
It is formed in a gentle taper shape up to about / 1000. Therefore, the inner diameter of the tip of the tip can be increased, a hollow portion through which the fishing line can pass freely can be obtained, and a through-hole structure with a reduced line resistance can be achieved. In addition to being able to bend moderately and obtain a delicate bending characteristic similar to that of the tapered tip portion, the crushing strength of the thin portion of the main body layer 12H as a tube is reinforced by the resin layer 12I. It is preferable that the synthetic resin of the resin layer 12I has good thread sliding properties, such as silicon and fluorine. Instead of the resin layer 12I, a layer mainly composed of reinforcing fibers oriented substantially in the circumferential direction may be formed and reinforced.

FIG. 6 shows still another embodiment of the spike portion. The rear portion of the tip body layer 12H ′ in which the reinforcing fibers are oriented so as to be directed at least substantially in the axial direction with the synthetic resin as a matrix is tubular, but has an inclined shape as shown in FIG. It has a cut portion 12C,
A cylindrical body 12I 'mainly made of a synthetic resin is integrated with the inner periphery of the tip body layer 12H' by adhesive bonding or the like so as to cover the cut portion 12C. The inner surface of this cylindrical body and the inner surface of the rear part of the tip part main body layer are formed so as to have no step, and are formed in a substantially straight shape of 3/1000 or less from the rear part to the front part, or a gentle taper shape of about 6/1000. Therefore, the fishing line has a hollow portion through which the fishing line can be freely inserted, and a hollow structure in which the line resistance is reduced can be realized. Also,
Since the number of the main body layers is smaller at the tip, the tip is well bent, and a delicate deflection characteristic similar to that of the tapered tip is obtained.

The cylindrical body 12I 'is mainly made of a synthetic resin. However, it is also possible to use a whisker (trade name) reinforced with short fibers or particles, or an inner surface having improved thread sliding properties. Good. Further, it may be a cylindrical body of a resilient rubber or elastomer resin, or may be formed by winding a synthetic resin tape.

The volume ratio of the synthetic resin as the matrix in each of the above embodiments is often used at 40% or less, but the tip of the tip is set to 60% or more, and the rear is set to about 25%. The ratio may be changed gradually. As a result, the number of fibers in the substantially axial direction becomes smaller toward the tip, and even if the reinforcing fiber or the synthetic resin is one type of tip, the bending characteristics can be close to those of the embodiment of FIGS. 5 and 6. .

FIG. 7 is a partially enlarged view of another example of the tip portion. The reinforcing fibers S1 and S2, which are inclined by an angle θ with respect to the axial length direction J of the tip portion, are substantially symmetrical so as to intersect with each other. Oriented. In this embodiment, θ is 15 degrees,
It is set at about 5 degrees or more and about 25 degrees or less. Further, the reinforcing fibers oriented in the axial direction and the reinforcing fibers oriented in the circumferential direction are not provided, but may be slightly present. Elastic modulus is 200
It is preferable to use a low elasticity reinforcing fiber of about 00 kg / mm ² (196000 N / mm ² ) or less. In the tip of this structure, the bending rigidity can be reduced, the inner diameter can be increased, and the fishing line insertion resistance can be reduced while maintaining a delicate flexure. In addition, since the reinforcing fibers are oblique, there are components that contribute in the circumferential direction, so that the reinforcing fibers can resist crushing and fracture, and there are components that contribute in the longitudinal direction, so that plastic deformation can be prevented.

Further, the spike portion of still another embodiment is configured such that, in addition to the reinforcing fibers S1 and S2 in the cross direction in FIG. In this case, the angle θ is 5 degrees or more, but preferably 15 degrees or more. This is because it is easy to bend and plastic deformation of the tip is prevented. In addition, the length of the longitudinal fiber is made smaller than that of the cross-directional fiber, or a reinforcing fiber having a lower elastic modulus is used to make the deflection fine. This axial length fiber has an elastic modulus of at most 24000 kg / mm ² (235200 N /
mm ² ) to reduce bending rigidity. Since the reinforcing fibers are three-dimensionally oriented in this manner, the spikes are resistant to crushing and kinking. Low bending rigidity, large inner diameter,
As described above, the fishing line insertion resistance can be reduced.

It is necessary to lower the bending rigidity of the spike portion and increase the strength against crushing. This can be achieved by using a laminated structure combining reinforcing fibers and woven fabric aligned in the axial direction. is there. The presence of the fibers in the circumferential direction of the woven fabric improves the crushing strength, and not all the reinforcing fibers contribute to the bending stiffness. Therefore, the bending stiffness is smaller than the amount of the reinforcing fibers used, and the inner diameter can be increased. The spike portion can be formed to be thick in spite of the bending rigidity, and it is hard to be crushed or broken even if it is greatly bent.

The woven fabric has a low fiber ratio of 50% or more of synthetic resin, and the aligned fibers have a synthetic resin ratio of 45% or more.
It is preferable to set the high fiber ratio as follows. Further, when the woven fabric is more than the aligned fibers, the thickness can be secured without increasing the bending rigidity (that is, the inner diameter can be increased with delicate bending characteristics), and the crushing strength is improved. As an example, glass fibers are used for the woven fabric to reduce the elastic modulus, and the aligned fibers are made of carbon fibers (the elastic modulus is 24000 kg / mm ²
(235200 N / mm ² ) or less), and the ratio of each synthetic resin is 35% or more, and the number of woven fabrics is increased. The lamination thickness is 0.06 mm for the woven fabric and 0.03 mm for the aligned fibers. Also, instead of the aligned fiber,
It is also possible to use reinforcing fibers oriented in a crossing manner at an angle θ of 25 degrees (an angle within the range of 15 degrees to 45 degrees) in FIG. Good.

Since the spike portion according to the first aspect is provided with reinforcing fibers of low elongation (high elasticity) on the inner side and reinforcing fibers of high elongation (low elasticity) on the outer side, it is easy to bend and has an inner diameter. It can be formed large and can prevent plastic deformation when it is greatly bent.

[0029] Further, a fishing rod having a hook through which a tubular member formed of a material having a lower elasticity than the spiral member is fitted outside the spiral member through which the fishing line is inserted. Can be configured. The helical member referred to herein includes a plurality of ring members connected by a member extending in the longitudinal direction. In this configuration, the spiral member has extremely low bending rigidity, and the fitted cylindrical member is also formed of a low elastic material, so that the flexibility can be improved, and the inner diameter can be increased by that amount. Due to the presence of the spiral member, the strength against crushing and breaking is also high.

The tip portion of this embodiment is illustrated in FIGS. 8 and 9, and the spiral member 32 of the tip portion is made of fiber reinforced resin, fiber reinforced metal, metal, ceramics, synthetic resin, or the like. The fishing line can be inserted through this with low resistance.
A tubular member 12A made of a material having a lower elasticity than the spiral member is fitted over the outside of the spiral member 32 so as not to hinder the flexibility of the spiral member 32, The fishing line is configured such that it does not become entangled outside the spiral member 32. Therefore, the inner diameter is easily increased while maintaining the fineness of the deflection, and the fishing line resistance can be reduced. Furthermore,
The tubular member 32 is unlikely to be crushed due to the presence of the spiral member.

The cylindrical member 12A is connected to a rear rod 12C via a connecting portion 12B holding the rear end of the spiral member 32, and the front portion is connected to a connecting portion holding the front end of the spiral member 32. It is connected to the top guide 14 via 12B '. In FIG. 9, the spiral member 32 ′ is the same as that of FIG. 8 except that the spiral member 32 ′ is constituted by a plurality of guide rings R made of, for example, ceramics, and a linear elongated member LB connecting these.

[0032]

As is apparent from the above description, according to the present invention, a fishing rod having a delicate tone can be formed as a through fishing rod which reduces the line resistance while maintaining the delicate tone. it can.

[Brief description of the drawings]

FIG. 1 is a side view of a through fishing rod in one form.

FIG. 2 is an enlarged vertical sectional view of the spike of FIG. 1;

FIG. 3 is an explanatory view of a method of manufacturing the tip rod of FIG. 2;

FIG. 4 is a longitudinal sectional view showing another embodiment.

FIG. 5 is a longitudinal sectional view showing another embodiment.

FIG. 6 is a longitudinal sectional view showing another embodiment.

FIG. 7 is a partially enlarged plan view showing another embodiment.

FIG. 8 is a partial perspective side view showing another embodiment.

FIG. 9 is a partial perspective side view showing another embodiment.

[Explanation of symbols]

 12 head rods a, b, c, d each part of the head rod 12H, 12H 'body layer 12I resin layer 12I' cylinder

Claims (2)

[Claims] The present invention is characterized in that a reinforcing fiber having a synthetic resin as a matrix and oriented substantially in the axial direction has a tip portion in which a reinforcing fiber having a large elongation at break is disposed outside and a small fiber is disposed inside. Through fishing rod. 2. The fishing rod according to claim 1, wherein the low elasticity reinforcing fiber having a large breaking elongation is made of carbon fiber having an elastic modulus of about 7000 kg / mm ² (68600 N / mm ² ) or less.