TWI542279B - The front pole and the fishing rod with the front pole - Google Patents

Description

The front head is fine and has a fishing rod with the front head

The present invention relates to a fishing rod including a tip portion of a hollow structure formed of a metal and having a front fine head.

In recent years, the fishing rod has been formed by a fiber-reinforced resin containing reinforcing fibers, and has increased bending rigidity and torsional rigidity, and has been reduced in diameter and weight. It's easy. Although the diameter of the hoe is reduced along with the entire fishing rod, a large load is applied to the hoe due to the fish species, and the overall strength balance design of the fishing rod becomes difficult. Further, the front end is in a state in which the fishing line is forcibly rolled up by a reel in a state in which the fishing line is wound, or a case where a large load is locally applied due to the timing of input of the fishing line. The top guide fitting portion or the tip portion tends to be broken.

In order to deal with such a problem, as a technique for improving the strength of the front fine, for example, Patent Document 1 proposes a front bar which is used as a tip portion (small diameter carcass) of a solid bar made of metal. In the front end of the patent document 1, the small-diameter body is provided with a pre-preg sheet to be solidified, and the inclined connecting portion is solidified by the insertion-tip holding portion (large-diameter body). Side connecting portion (root end side of small diameter body) Tilting (taper) with the forward hoe. The large-diameter body into which the connecting portion is inserted forms a hollow structure in which the prepreg sheet is wound into a tapered shape. The pushing and pulling of the inclined connecting portion is connected to the large-diameter body to be pushed and pulled without a level difference.

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2007-289067

However, the first detail described in the cited document 1 is a joint structure in which a connecting portion of a metal rod-shaped rod-shaped tip portion (small diameter body) is inserted into a hollow structure and a large-diameter body formed of a resin member. The rigidity of the overlapping portion of the rod member serving as the connecting portion and the body composed of the resin member is larger than the front and rear. Further, since the front end is provided with the inclined connecting portion on the tip end side of the connecting portion, the smoothing load curve is formed from the small-diameter body to the insertion end portion of the large-diameter body, but it is in the immediate vicinity. The structure in which the boundary stress of the hollow portion of the large-diameter body of the solid joint portion is easily concentrated. Therefore, the connection of the joint to the large diameter body does not become a continuous load smoothing load curve.

The present invention has been made to solve the problems of the prior art, and an object thereof is to provide a tip end holding portion which is connected to a hollow structure or a solid structure by a tip portion having a hollow structure at least a portion related to the joint portion. The structure has a high rigidity and a smooth load curve, and has the ability to withstand the sensitivity of the fish bite hook. The fish hook is easy to distinguish the head fine and the fishing rod having the front fine.

In order to achieve the above object, the front fines relating to the present invention include: a tip portion which has an elastic elongation of 3 to 8% by swaging. Ni-Ti alloy, Ni-Ti-Fe alloy, Ni-Ti-Cu alloy, β titanium alloy or Ni-Ti-Cr alloy are processed into a tapered cone and have a hollow structure on the dovetail side. The joint portion has a hollow structure formed of a fiber-reinforced resin material, has a tapered shape whose diameter is increased toward the dovetail side, and has a joint portion that is fitted to the joint at the distal end side.

According to the present invention, it is possible to provide a structure having a high rigidity and a smooth load curve by connecting a tip portion having a hollow structure at least with respect to the joint portion to a structure of a hollow structure or a solid structure. It has the ability to withstand the sensitivity of the fish bite hook, and the fish hook is easy to distinguish between the head and the fishing rod with the front fine.

1‧‧‧ fishing rod

2, 11, 21, 31, 41‧‧ ‧ tips

3, 12, 14, 22, 32, 42‧ ‧ 竿 tip holding

3a, 15, 22a, 31a, 42a‧‧‧ Connections

3b‧‧‧ joints

4‧‧‧Before the head (Section 1)

5‧‧‧second (section 2)

11a, 12a, 21a, 32a, 41a‧‧‧ joints

13‧‧‧ Inserting members

21b‧‧‧Expanding Department

31b‧‧‧Reducing section

41b‧‧‧solid construction

41c‧‧‧ hollow structure

S‧‧‧ Straight Department

T‧‧‧ Tapered

Fig. 1 is a view showing a configuration example of a concept of a front end detail relating to the first embodiment.

FIG. 2 is a view showing a configuration example of a joint portion of the front end of the second embodiment.

Fig. 3 is a view showing an example of the configuration of a joint portion of a front end portion according to the third embodiment.

Fig. 4 is a view showing an example of the configuration of a joint portion of a front end portion according to the fourth embodiment.

Fig. 5 is a view showing a configuration example of a joint portion of a front end portion according to the fifth embodiment.

Fig. 6 is a view showing an example of the configuration of a joint portion of a front end portion according to the sixth embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[First Embodiment]

Fig. 1 is a view showing a configuration example of a concept of a front piece of a fishing rod according to the first embodiment. Hereinafter, the front detail of each embodiment can be similarly applied to a plurality of knots that are divided into a plurality of joints by a joint type or the like, or a so-called single knot, or a telescopic file. Any of them. Further, in the following description, it is said that the tip end side having a small diameter is a tip end side or a tip end side in a certain position of the crucible, and the tail side on which the diameter is thick is referred to as a dovetail side or a rear end side.

As shown in Fig. 1, the fishing rod 1 is a configuration example in which a plurality of knots (not shown) are joined to the tail of the scorpion (first section) 4 and the second shackle (second section) 5 to the end of the tail. The front end 4 is a tip portion 2 formed of a metal material, and is integrally formed by being joined to the tip holding portion 3 made of a resin material.

The tip portion 2 of the present embodiment is a swaging process for forming a taper shape on a metal pipe material, and the taper tip is elongated into a straight axis shape to form a conical hollow structure in which the diameter of the crucible is increased from the tip end. (The so-called tubular). The metal material forming the tip portion 2 is, for example, a Ni-Ti alloy, a Ni-Ti-Fe alloy, a Ni-Ti-Cu alloy, a beta titanium alloy (β phase: body centered cubic crystal) or Ni-Ti-Cr. A material such as an alloy or the like is preferably 3% or more, and preferably a synthetic metal having an elastic elongation (ductility) of 5 to 8% is suitable. In the present embodiment, the tip end portion 2 is at least a hollow structure (tube structure) and open Formed by the mouth.

The tip end holding portion 3 is a fiber-reinforced resin sheet in which a resin is impregnated with reinforcing fibers such as carbon, that is, a so-called prepreg is wound, and a hollow structure is formed, and the diameter of the crucible is increased toward the dovetail side.

Although the winding of the sheet differs in rigidity or bending characteristics due to the winding direction of the fibers of the sheet, the general fiber direction is wound in a direction parallel or orthogonal to the longitudinal direction (straight axis direction) of the fishing rod. Further, it is possible to prevent twisting of the crucible by changing the cross direction, for example, the fiber direction of the direction of the fishing rod in the longitudinal direction (straight axis direction) of ±45 degrees, and to change the characteristics of the rigidity or the load curve. Further, a connecting portion 3a that is fitted into the open end of the tip end portion 2 is disposed at the distal end of the tip end holding portion 3 that is joined to the tip end portion 2.

The connecting portion 3a may have any one of a hollow cylindrical shape, a hollow truncated cone shape, a solid cylindrical shape, and a solid truncated cone shape. The connecting portion 3a is fitted into the tip portion 2 and fixed by an adhesive or the like. In the following description, the connecting portion or the connecting member suggests that the portion to be joined and fixed by the joining or the like is used, and the joint portion or the joint member is intended to be detachably fitted.

Although the tip end holding portion 3 of the present embodiment is a hollow structure made of a fiber-reinforced resin material, a solid structure in which a resin material of the same or different material is filled inside may be used. Further, the tip end holding portion 3 may be formed in a hollow structure or a solid structure by the same processing method using the metal pipe material as the crotch tip portion 2. In the case where the tip portion 2 and the tip holding portion 3 are both formed of a metal material, not only the same metal material but also a metal having different characteristics can be set. Bending and rigidity. For example, when a superelastic effect and a soft bending are required for the tip portion 2, a Ni-Ti alloy is used, and the weight of the tip holding portion 3 is considered to be reduced, and a combination of various types such as a β titanium alloy can be employed.

In addition, in the case of a fishing rod of a specification of a fishing line guide, a foot part of the guide is placed at the joint, and a winding wire for fixing the leg is used. Alternatively, the resin material may be used for reinforcement at the joint.

Further, although the crotch portion 2 of the present embodiment has been described by taking a hollow structure as an example, if the joint portion or the joint portion is at least a hollow structure, the filler such as the resin member is dissolved and compacted in the crotch tip side. It is also possible to increase the strength of the solid structure buried in the hollow structure.

Further, in order to detachably engage the immediately adjacent second weir 5, a straight cylindrical shape (solid) or a cylindrical shape (hollow) joint portion 3b is formed on the dovetail side of the mast holding portion 3 It is equipped. The joint portion 3b is detachably fitted into the joint opening end of the immediately adjacent second jaw 5.

As described above, according to the present embodiment, the tip portion of the hollow structure made of a metal material in the front fineness has high rigidity and maintains high sensitivity as compared with the tip portion made of fiber-reinforced resin. In addition, if it is the same diameter, the weight can be reduced compared with the tip of the solid structure. The front fine structure of the hollow structure can be freely designed with rigidity, load curve (bending shape of the shackle when the fish is hooked) and the diameter of the mast by the selection of the metal material and the thickness of the selected wall thickness.

Further, in the present embodiment, since the connection portion of the tip holding portion 3 is fitted into the opening of the tip end portion, the structure is The connection portion (hollow structure) of the tip holding portion 3 covers the outer structure of the tip portion, and the rigidity of the joint portion can be suppressed to be lower, and a load curve without a sudden change in curvature can be realized. Therefore, not only the sensitivity of the hand is transmitted, but also the size of the load (the size of the fish caught) can be known to the angler by the appearance.

[Second embodiment]

Next, the second embodiment will be described. FIG. 2 is a view showing a configuration example of a joint portion of the front end of the second embodiment. In the present embodiment, the tip end portion of the tip end portion and the tip end holding portion are joined by a connecting member of the straight portion S, that is, a so-called spigot type joint structure.

In the tip end portion 11 of the present embodiment, a metal material equivalent to that of the first embodiment is used to form a hollow structure, or at least a hollow structure is formed in the vicinity of the joint portion. The tip portion 11 is formed as a tapered tapered portion T on the tip end side, and only the joint portion of the hollow structure of the insert member 13 (an example of the first joint in the present claim) 11a forms a straight portion S. In addition, the tip end holding portion 12 is a fiber-reinforced resin sheet in which a resin is impregnated with reinforcing fibers such as carbon, that is, a so-called prepreg is wound, and a hollow structure is formed, and the diameter of the crucible is increased toward the dovetail side. Department T. In the joint holding portion 12, only the joint of the hollow structure of the insert member 13 (an example of the second joint in the case of the present application) 12a is formed to form the straight portion S.

The insert member 13 is formed into a cylindrical shape (hollow tube: hollow structure) or a cylindrical shape (solid structure) of a straight tube having an outer diameter of an inner diameter of each joint without gaps, using a resin material equivalent to the tip holding portion 12. Made). Further, the insertion member 13 is not limited to the resin material, and a hollow structure may be formed using a metal material equivalent to the tip portion 11 . Moreover, the rigidity can be adjusted by selecting the type of metal and adjusting the thickness.

Generally, in the tip end portion 11 of the insertion of the insertion member 13, the rigidity of the portion overlapping the insertion member 13 and the non-overlapping portion are different in difference. The same is true for the boundary of the portion overlapping the insert member 13 in the mast holding portion 12. On the other hand, by making the insertion member 13 a hollow structure or slightly lowering the rigidity of the insertion member 13, a part of the rise or fall of the rigidity difference of the boundary portions can be inclined to reduce the variation range of the rigidity. That is, the change in the rigidity from the tip portion 11 to the tip end holding portion 12 can be reduced, and the variation in the step of the load curve characteristic can be alleviated, so that the transmission of the sensitivity is further improved.

The length of the insert member 13 has at least a length obtained by adding the respective joints 11a and 12a to be fitted. The insert member 13 shown in Fig. 2 is formed slightly longer than the length after the addition, and is formed by a gap at the time of joining. This gap is not necessarily required, and is used as the amount of bonding or as a distance in consideration of thermal expansion in at least the metal forming the tip portion 11. Further, at the time of coating of the crucible, the gap may be utilized as a filling place of the adhesive. For example, it may be embedded in an epoxy resin or the like to be processed to flatly connect the joints 11a and 12a, and the member having the gap is preferably a member having elasticity even in a cured state.

Furthermore, the insert member 13 is formed not only of a material such as an outer layer of a metal material and an inner layer of a resin material. The layered structure of the heart is also possible. Alternatively, a hollow laminated structure composed of an outer layer of a resin material and an inner layer of a metal material may be used. Further, a cylindrical outer layer made of a metal material and a solid structure in which a resin material is filled in the cylindrical shape may be used.

According to the present embodiment, the insertion member is joined to the inner side of the tip end portion and the tip end holding portion, so that the outer diameter of the joint portion can be smoothly joined without increasing the outer diameter of the joint portion. Further, since the joint portion is the straight portion S, for example, if the fishing rod is attached to the fishing line guide, the fish line guide can be more stably fixed by arranging the guide leg portion on the straight portion. Moreover, it can be configured by the guide foot portion spanning the gap portion to more firmly engage the joint of the tip end portion and the tip end holding portion.

[Third embodiment]

Next, a third embodiment will be described. Fig. 3 is a view showing an example of the configuration of a joint portion of a front end portion according to the third embodiment. In the present embodiment, the joint structure of the reverse insertion type is provided such that the joint portion (an example of the joint portion in the request) of the tip end holding portion 14 is fitted into the tip end portion 11 of the front end. The open end of the appendix side.

In the tip end portion 11 of the present embodiment, a metal material equivalent to that of the first embodiment is used, and a hollow structure in which the tip end is elongated into a straight axis shape is formed, or at least a hollow structure is formed in the vicinity of the joint portion, and a tapered structure is formed on the tip end side. The tapered portion T forms a straight portion S only with the joint portion 11a having a hollow structure in which the open end of the connecting portion 15 is fitted.

Further, the tip end holding portion 14 is a fiber-reinforced resin sheet in which a resin is impregnated with reinforcing fibers such as carbon to form a conical shape of a solid structure. Department T.

A connecting portion 15 having a cylindrical shape (hollow tube: hollow structure) or a cylindrical shape (solid structure) having a straight tube having an outer diameter of the inner diameter of the joint 11a without a gap is disposed at the tip end of the tip holding portion 14. . Further, the temple holding portion 14 may have a hollow structure. The straight portion S may be formed in the same length as the joint portion 11a in the vicinity of the tip end of the tip holding portion 14.

The length of the connecting portion 15 has at least the length of the joint 11a (the length to be embedded). The connecting portion 15 shown in Fig. 3 is formed slightly longer than the length, and is formed by a gap at the time of joining. This gap is not necessarily required, but is provided in consideration of at least the distance of thermal expansion in the metal forming the tip portion 11 at least. Further, as in the first embodiment described above, for example, an epoxy resin or the like is buried in the gap, and processing may be performed to smoothly connect the joint portion 11a and the tip end holding portion 14 therebetween, and the member in which the gap is buried may be In the cured state, a member having elasticity is suitable.

According to the present embodiment, the connection portion provided at the tip end of the tip end holding portion is fitted into the joint portion of the hollow structure of the tip end portion, and the joint portion can be smoothly joined without increasing the outer diameter of the joint portion. Moreover, it can be disposed by the guide leg portion crossing the gap portion between the tip end portion 11 and the tip end holding portion 14, and the joint portion of the tip end portion and the tip end holding portion can be more firmly joined.

[Fourth embodiment]

Next, a fourth embodiment will be described. Fig. 4 is a view showing an example of the configuration of a joint portion of a front end portion according to the fourth embodiment. In the present embodiment, the joint portion of the insertion portion 22a disposed on the distal end side of the distal end holding portion 22 is fitted into the appendix of the distal end portion 21 of the distal end portion. The opening end of the side diameter is increased (large diameter) at the joint end (an example of the joint in the case of the present invention) 21a.

In the tip end portion 21 of the present embodiment, a metal material equivalent to that of the first embodiment is used, and a hollow structure in which the tip end is elongated into a straight axis shape is formed, or at least a hollow structure is formed in the vicinity of the joint portion. The shape of the body of the portion of the tip portion 21 is such that the diameter of the body of the enlarged diameter portion 21b extends from the tip end side to the portion where the enlarged diameter portion 21b is connected, and the body of the enlarged diameter portion 21b is connected to the tip portion 21 to The diameter is increased (i.e., the tapered portion T in Fig. 4) at the point where the maximum joint portion 21a of the insertable connecting portion (an example of the connecting portion in the case of the present invention) 22a is connected, and the enlarged diameter portion 21b is connected. The joint 21a extends in a straight portion S to the open end.

In the present embodiment, the joint portion 21a and the diameter portion 21b are formed to have the same thickness as the thickness (wall thickness) of the body extending from the side of the tip portion 21, or the thickness of the body is reduced. In this case, if the diameter of the crucible is increased, the rigidity of the crucible itself is increased. Therefore, even if the thickness is reduced, the rigidity of the crucible before the diameter reduction can be maintained, and the joints 21a can be adjusted. The rigidity of the joint portion is adjusted by the thickness of each of the diameter portion 21b and the joint portion 22a.

Further, the tip holding portion 22 is a hollow structure in which a fiber-reinforced resin sheet in which a resin is impregnated with reinforcing fibers such as carbon is wound, and the connecting portion 22a forms a straight portion S, and then the diameter is toward the dovetail side at the tapered portion T. Expanded and formed. Further, in FIG. 4, the hollow tip structure holding portion 22 is shown as an example, but the connecting portion 22a may be a solid structure.

As described above, according to the embodiment, the tip is formed The metal material of the portion 21 is rigid and has no directionality like a fiber-reinforced resin sheet, and the joint 21a and the crucible which expand the diameter of the crucible extending from the taper portion T by the tip end portion can be formed with a constant thickness. The diameter portion 21b realizes a front fineness in which the front and rear rigidity of the joint portion does not greatly change. Further, by adjusting the thickness or the amount of overlap (the length of the insertion) of the joint portion 21a, the diameter portion 21b, and the tip end holding portion 22 constituting the joint portion, the rigidity can be adjusted, and the desired front-fineness can be designed. Flexing situation.

[Fifth Embodiment]

Next, a fifth embodiment will be described. Fig. 5 is a view showing a configuration example of a joint portion of a front end portion according to the fifth embodiment. In the present embodiment, the joint portion of the insertion type is formed by the opening end 32b of the joint (the example of the joint in the case of the present invention) 32a provided on the distal end side of the tip end holding portion 32. A connection portion (an example of a connection portion in the case of the present invention) 31a in which the diameter of the crotch portion of the crotch portion 31 is reduced (the diameter is reduced).

In the tip end portion 31 of the present embodiment, a metal material equivalent to that of the first embodiment is used, and a hollow structure in which the tip end is elongated in a straight axis shape is formed, or at least the vicinity of the joint portion and the joint portion 31a form a hollow structure. The shape is as follows: the crucible having an enlarged diameter extending from the tip end side toward the crotch side in the tapered portion T is reduced in diameter (reduced diameter portion 31b) in the tapered portion T at the front side of the joint portion, and is connected. The connecting portion 31a of the straight portion S.

In addition, the tip end holding portion 32 is a hollow structure in which a fiber-reinforced resin sheet in which a resin is impregnated with reinforcing fibers such as carbon is wound, and a joint portion (an example of a connecting portion in the case of the present invention) 31a is fitted in the joint portion (this case) please In the case of the joint portion 32a, the straight portion S is formed, and the diameter is formed in the tapered portion T toward the dovetail side. As shown in Fig. 5, the open end 32b of the joint portion 32a forms a reversely inclined slope to match the inclination of the reduced diameter portion 31b (tapered surface T), and when the joint portion 32 is fitted with the joint portion 31a, the tip portion 31 is formed. It is connected smoothly with the tip end holding portion 32 without a step. In addition, although the dome-shaped holding part 32 of a hollow structure is shown as an example in FIG. 5, you may be a solid structure in which the inside of the crucible is filled with a resin member or the like in the middle of the crucible.

In the present embodiment, the body of the tip portion 31 and the connecting portion 31a are formed to have the same thickness, or the thickness of the connecting portion 31a and the reduced diameter portion 31b is increased. This is because if the diameter is reduced, even if the diameter is reduced, the rigidity of the body itself becomes small, so that the rigidity and the tip of the connecting portion 31a can be maintained by maintaining the thickness or increasing the thickness. The rigidity of the portion 31 is the same. Of course, the rigidity of the joint portion can be adjusted by adjusting the thickness of each of the reduced diameter portion 31b and the joint portion 31a and the joint portion 32a. Thereby, the change in rigidity of the joint portion and the jaw portion 31 and the tip end holding portion 32 connected to the joint portion can be reduced, respectively.

As described above, according to the present embodiment, since the connecting portion 31a of the tip portion 31 is fitted into the connecting portion of the tip holding portion 32, the connecting portion 31a and the joint portion 32a are abutted by the inclined surface, so that the body is applied to the body. The rigidity is dispersed, and a large change in curvature is suppressed, and the desired deflection of the front fineness can be obtained.

[Sixth embodiment]

Next, a sixth embodiment will be described. Fig. 6 is a view showing an example of the configuration of a joint portion of a front end portion according to the sixth embodiment. Real The joint portion has a joint portion of the joint type: the joint portion (the example of the joint portion in the case of the present invention) 42a disposed on the distal end side of the tip end holding portion 42 is fitted in the middle of the tip portion 41 of the front end. The joint of the hollow structure (an example of the joint in the present claim) 41a.

In the tip end portion 41 of the present embodiment, a tubular metal material equivalent to that of the first embodiment is used, and a metal taper is swaged to form a tapered taper, and the tip end is elongated into a straight axis shape to form a diameter. The taper of the top diameter is enlarged. The tube shape of the thin tip end portion may be crushed into the solid structure 41b by the hollow structure 41c by the degree of pressing in the tapered processing. As shown in Fig. 6, the crotch portion 41 forms a hollow structure 41c near at least the joint portion.

The tip end holding portion 42 winds the above-described fiber-reinforced resin sheet to form a solid structure and has a tapered shape in which the diameter of the crucible is reduced toward the dovetail side. A connecting portion 42a for forming a cylindrical shape (solid structure) for inserting the hollow structure 41c is disposed at a distal end of the tip holding portion 42. The connecting portion 42a is fitted into the joint portion 41a and fixed to the stem portion 41 using an adhesive or the like.

As described above, according to the present embodiment, since the joint portion is joined to the joint portion of the joint holding portion 42 in the joint portion 41a of the hollow structure, the change in rigidity can be reduced, and the curvature of the body can be greatly changed. It is suppressed, and the desired deflection of the front fineness can be obtained.

1‧‧‧ fishing rod

2‧‧‧竿 tips

3‧‧‧竿 Tip Holder

3a‧‧‧Connecting Department

3b‧‧‧ joints

4‧‧‧Before the head (Section 1)

5‧‧‧second (section 2)

Claims (6)

A front fine boring, comprising: a tip portion, a Ni-Ti alloy having a tensile elongation of 3 to 8% by a swaging, a Ni-Ti-Fe alloy, a Ni-Ti-Cu alloy, and a β a titanium alloy or a Ni-Ti-Cr alloy is processed into a tapered tapered shape and has a hollow structure joint on the dovetail side; and a tip retaining portion is formed by a fiber-reinforced resin material to form a hollow structure having a diametry The tail side is tapered to have a connecting portion at the tip end side. A front fine boring, comprising: a tip portion, a Ni-Ti alloy having a tensile elongation of 3 to 8% by a swaging, a Ni-Ti-Fe alloy, a Ni-Ti-Cu alloy, and a β a titanium alloy or a Ni-Ti-Cr alloy alloy processed into a tapered taper having a first joint at a dovetail side; and a tip retaining portion formed of a solid structure by a fiber reinforced resin material The diameter is tapered toward the dovetail side and has a second joint that is straight and embedded in the solid configuration of the first joint on the tip side. A front fine boring, comprising: a tip portion, a Ni-Ti alloy having a tensile elongation of 3 to 8% by a swaging, a Ni-Ti-Fe alloy, a Ni-Ti-Cu alloy, and a β a titanium alloy or a Ni-Ti-Cr alloy is processed into a tapered tapered shape, and has a first joint portion of a straight hollow structure on the dovetail side; a tip retaining portion is formed by a fiber-reinforced resin material to form a hollow structure, a second joint having a tapered shape with a diameter increasing toward the tail side and a straight hollow structure on the side of the tip; and a connecting portion formed of a fiber-reinforced resin material and embedded in the joint without gaps A cylindrical shape of a hollow structure having an outer diameter or a cylindrical shape of a solid structure, and having both ends embedded in the first joint and the second joint. A front fine boring, comprising: a tip portion, a Ni-Ti alloy having a tensile elongation of 3 to 8% by a swaging, a Ni-Ti-Fe alloy, a Ni-Ti-Cu alloy, and a β a titanium alloy or a Ni-Ti-Cr alloy is processed into a tapered tapered shape, and has a diameter of the dovetail side which is expanded to form a joint of a straight hollow structure; and a tip retaining portion by the fiber The reinforced resin material is formed into a hollow or solid structure, and has a taper which is enlarged in diameter toward the dovetail side, has a shape in which it is embedded in the joint, and is formed into a flat surface with a flat surface at the time of insertion. A hollow or solid construction connection. A front fine boring, comprising: a tip portion, a Ni-Ti alloy having a tensile elongation of 3 to 8% by a swaging, a Ni-Ti-Fe alloy, a Ni-Ti-Cu alloy, and a β a titanium alloy or a Ni-Ti-Cr alloy is processed into a tapered tapered shape, and has a joint portion in which a diameter of the dovetail is reduced in diameter to extend into a straight hollow structure; and a tip retaining portion by fiber The reinforced resin material has a hollow structure, and has a tapered shape in which the diameter is increased toward the dovetail side, and has a hollow structure in which the connecting portion is embedded and which is formed into a flat surface with a flat surface at the time of insertion. Joint. A fishing rod having a fine head before any one of the first to fifth claims of the patent application.