JP2000069884A - Internally threaded fishing rod and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an internally threaded fishing rod capable of preventing uptake of water drops attached to a fishing line in the interior of the fishing rod, yet controlling the retention of water drops at the upper side of a spiral or ring-shaped projected part having a specific crossectional shape on the inner face of the fishing rod and avoiding increase in sliding resistance of fishing line by making the fishing rod have the projected part. SOLUTION: This internally threaded fishing rod has a spiral or ring-shaped projected part 2 on the inner face of the fishing rod and the crossectional shape of the projected part 2 has a protruded part 3c at the upper side of the fishing rod tip part toward the tip part of the fishing rod. In the fishing rod, preferably the protruded part 3c has elasticity. The crossectional shape of the protruded part 2 is formed in an approximately trapezoidal shape having an obtuse angle to the inner face of the fishing rod at the fishing rod tip side and an inclined surface of an acute angle to the inner face of the fishing rod at the fishing rod base side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a through fishing rod and a method of manufacturing the same.

[0002]

2. Description of the Related Art A through fishing rod is configured such that a fishing line passes through the inside of a rod tube, and has a spiral or ring-shaped projection for guiding the fishing line on the inner surface of the rod tube.

[0003] With respect to this kind of through fishing rod,
Japanese Patent Publication No. 172980 discloses a through fishing rod in which a protrusion having a substantially trapezoidal cross section is integrally formed in a spiral shape with a fiber-reinforced resin on the inner surface of a rod pipe (hereinafter referred to as “prior art”).

In the prior art, in a substantially trapezoidal cross section of the projection along the length direction of the through fishing rod, arc-shaped portions are provided at both corners of the upper side of the projection, and the upper side has a certain length. Are formed flat. Therefore, the arc-shaped portion of the projection can reduce the contact resistance of the fishing line with the projection to some extent, and can reliably guide the fishing line by the flat portion on the upper side of the projection.

[0005]

However, in the prior art, the arc-shaped portion of the projection has the function of guiding the fishing line to a certain extent as described above, but the function of removing water droplets attached to the fishing line does not. Almost no. Therefore, at the time of winding the fishing line, water droplets attached to the fishing line are easily taken into the inside of the rod tube.

Although the flat portion on the upper side of the projection has the function of reliably guiding the fishing line as described above, water droplets tend to stay on the flat portion, thereby increasing the sliding resistance of the fishing line. is there.

[0007] It is an object of the present invention not only to have a function of smoothly and reliably guiding a fishing line, but also to prevent water droplets adhering to the fishing line from being taken into the inside of a rod pipe.
An object of the present invention is to provide a through fishing rod and a method of manufacturing the same, which can suppress the accumulation of water droplets on the upper side of the protrusion and can avoid an increase in the sliding resistance of the fishing line.

[0008]

According to a first aspect of the present invention, there is provided a through fishing rod having a spiral or ring-shaped protrusion (2, 12, 22) on the inner surface of a rod tube (1a). (2, 1
The cross-sectional shape of (2, 22) is characterized in that it has a protruding portion (3c, 13c, 23c) on the upper side of the rod tip side toward the tip side of the rod tube (1a).

According to a second aspect of the present invention, in the through fishing rod of the first aspect, the projecting portions (3c, 13c, 23c) have elasticity.

According to a third aspect of the present invention, in the through fishing rod according to the first or second aspect, the cross-sectional shape of the projections (12, 22) is set such that the rod tip side has an inner surface with respect to the inner surface of the rod pipe (1a). It is characterized in that it is formed in a substantially trapezoidal shape on the obtuse surfaces (13b, 23b) and the inclined surface (13d, 23d) on the rod base side with an acute angle to the inner surface of the rod (1a).

According to a fourth aspect of the present invention, in the through fishing rod according to the third aspect, a connecting portion between the upper side (23a) of the trapezoid and the acute inclined surface (23d) is an R surface (23e). Features.

According to a fifth aspect of the present invention, there is provided the through fishing rod according to any one of the first to fourth aspects, wherein a plane of a concave portion (G) formed between the adjacent projections (2, 12, 22). The length (L1) of the portion is longer than the height (H) of the protrusion (2, 12, 22).

According to a sixth aspect of the present invention, in the through fishing rod according to any one of the first to fifth aspects, a water-repellent treatment is applied to an inner surface of the rod tube (1a).

According to a seventh aspect of the present invention, there is provided a method for manufacturing a through fishing rod according to the present invention, wherein a fiber string (4) and a peeling tape (8) are alternately provided on a core metal (7) for forming a fishing rod from a rod base side to a rod tip side. Is wound in a spiral shape by applying tension to a notch-shaped space portion (9) at the rod-side end of the peeling tape (8) at the point of contact with the core metal (7). A prepreg (1) for forming a fishing rod body is placed on the woven fiber string (4) and the release tape (8).
0), and the prepreg (10) is fired under pressure.
The melted part is infiltrated into the periphery of the fiber string (4) and the notch-shaped space (9), and is hardened so that it is located on the upper side of the rod tip side at the tip side of the rod pipe (1a). A spiral protrusion (2) having a protrusion (3c) protruding toward it is formed, and then the core metal (7) and the release tape (8)
Is removed.

According to a eighth aspect of the present invention, there is provided a method of manufacturing a through fishing rod according to the present invention, wherein the fiber string (4) is brought into contact with the core metal (7) for forming the fishing rod and the core metal (7) at the base of the rod is cut. A peeling tape (11) having a notch (11a) is alternately wound spirally or in a ring form from the rod base side to the rod tip side, and the wound fiber string (4) and the peeling tape (11) A prepreg (10) for forming a fishing rod body is wound around the prepreg (1).
0) is baked under pressure, and the melted part is used as a fiber string (4).
Into the notch (11a) and the above-mentioned notch (11a), and then hardened to form a helical or helical shape having a protruding portion (3c) protruding toward the tip end of the rod pipe (1a) on the upper side of the rod tip. A ring-shaped projection (2) is formed, and then the core bar (7) and the release tape (11) are removed.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A fishing rod according to a first embodiment of the present invention will be described below with reference to FIGS.

The through fishing rod according to the first embodiment of the present invention comprises an original rod tube 1a and a front rod tube 1b joined to the inside of the tip of the original rod tube. FIG. Fig. 2 shows a joint state of the front pipe 1b and the front pipe 1b.
In FIGS. 1 and 2, F indicates the direction on the rod tip side of the through fishing rod, and R indicates the direction on the rod base side.

As shown in FIG. 1, a reinforcing winding 5 is provided inside the distal end portion of the original rod tube 1a to reinforce the distal end portion of the original rod tube 1a. The rear end of the front rod tube 1b is joined inside the reinforcing winding 5. A guide ring 6 for guiding the fishing line L is attached to the inside of the rear end edge of the front rod tube 1b.

A spiral projection 2 is formed on the inner surface of the original rod tube 1a. FIG. 1 simply shows the projection 2 schematically, and the detailed shape of the projection 2 is not shown in FIG. 1. However, as shown in FIG. And a fiber string 4 disposed therein.

The resin molded body 3 has a substantially trapezoidal shape in a cross section along the length direction of the through fishing rod, and has an upper side portion, that is, a portion disposed closer to the inside of the original rod tube 1a. A flat surface 3a is formed. An inclined surface 3 b is formed on the rod tip side of the resin molded body 3. A tongue-shaped protruding portion 3c protruding toward the distal end side of the original rod tube 1a is formed at a corner connecting the flat surface 3a and the inclined surface 3b.

As shown in FIG. 2, the flat surface 3a has a function of reliably guiding the fishing line L within the original rod tube 1a.
On the other hand, when the fishing line L moves in the direction of the arrow X in FIG. 2, the tongue-shaped protrusion 3c squeezes out water droplets attached to the fishing line L to form a water pool W on the side of the inclined surface 3b. It has an action of preventing further feeding into the inside of the rod tube 1a. By removing water droplets from the fishing line L in this manner, the sliding resistance of the fishing line L with the protrusion 3c can be reduced.

As will be described later, the resin molded body 3 is formed from a resin which is a part of a component of a prepreg for forming a fishing rod main body used in a manufacturing process of a through fishing rod. Is desirably constituted by a yarn obtained by impregnating a resin such as epoxy resin with a resin such as epoxy resin.

As described above, if the resin molded body 3 is molded from a resin which is a part of the components of the prepreg for forming the fishing rod main body, the elasticity can be imparted to the tongue-shaped projection 3c. In other words, since the tongue-shaped protrusion 3c has such elasticity, the protrusion 3c follows the movement of the fishing line L and elastically deforms to effectively drop water droplets, thereby improving the water droplet removal efficiency. Can be improved.

The above-mentioned original rod pipe 1a and / or tip rod pipe 1b
May be a single rod pipe or a plurality of rod pipes joined to each other.

Next, the first through-hole fishing rod of the present invention will be described.
The manufacturing method according to the embodiment will be described below with reference to FIGS.

The method for manufacturing a fishing rod according to the first embodiment of the present invention comprises a step of winding a fiber string and a release tape, a step of winding a prepreg, a firing step under pressure, and a step of removing a cored bar and a release tape. Has become.

The winding process of the fiber string and the release tape is shown in FIG.
As shown in the figure, the fiber string 4 and the peeling tape 8 are alternately spirally wound around the core metal 7 for forming a fishing rod from the rod base side to the rod end side in tension in the direction of arrow Te. .

The fiber string 4 is constituted by a yarn obtained by twisting a plurality of fibers such as carbon and impregnating the resin such as an epoxy resin. Textile string 4
As such, it is not limited to using such yarns,
A prepreg impregnated with resin by crossing fibers such as carbon may be cut into a string.

The release tape 8 is made of a polyolefin resin or a fluorine resin which is hardly deformed by heating and has excellent releasability. Instead of a release tape made of such a resin, a water-soluble tape formed of a polyvinyl alcohol resin or the like may be used.

The release tape 8 has a rectangular cross-sectional shape as shown in FIG.
When the fiber string 4 and the peeling tape 8 are alternately tensioned from the rod base side to the rod tip side around the cored bar 7 and spirally wound, the peeling tape 8 having a better peeling property than the fiber string 4 becomes a rod. On the other hand, the rod side of the fiber string 4 comes into close contact with the peeling tape 8. As a result, the release tape 8 is elastically deformed by being tensioned, and a notch-shaped space 9 is formed at the rod-side end of the release tape 8 at the position where the release tape 8 comes into contact with the core 7.
Is formed (see FIGS. 3 and 5). Specifically, the space A 9 is formed because the portion A of the release tape 8 in FIG. 3 is compressed and deformed by being tensioned, and at the same time, the lower right portion of the release tape 8 in FIG. 3 is lifted.

In the prepreg winding step, as shown in FIG. 6, the prepreg 1 for forming the fishing rod main body is placed on the fiber string 4 and the release tape 8 wound on the outer peripheral surface of the cored bar 7 as shown in FIG.
This is done by winding 0.

The prepreg 10 is obtained by impregnating fibers such as carbon with a resin such as an epoxy resin or a phenolic resin.

In the above-described prepreg winding step, the fiber string 4 and the release tape 8 are each compressed toward the center of the cored bar 7. By this compression, the notch-shaped space portion 9 formed at the rod-side end of the peeling tape 8 at the contact point with the core metal 7 becomes sharper without being crushed.

The pressure baking step is performed by the prepreg 10 described above.
By firing under pressure. That is, when the prepreg 10 is fired under pressure, a molten part of the resin, which is a component of the prepreg 10, penetrates around the fiber string 4 and into the notched space 9. When the molten resin hardens, a spiral projection 2 is formed on the inner peripheral surface of the original rod tube 1a. The protrusion 2 has a tongue-shaped protrusion 3c protruding toward the tip end of the original rod tube 1a on the upper side of the rod tip side of the protrusion 2 as in the through fishing rod of the present invention shown in FIG. And a fiber string 4 disposed therein (see FIG. 7).

In the step of removing the core metal and the release tape, after the completion of the above-described pressure baking step, the core metal 7 is first removed, and then the release tape 8 is cured by curing the prepreg 10 to form the original rod tube 1a. This is done by removing from the inner surface of the. When the peeling tape 8 is removed, the length of the inner peripheral surface of the peeling tape 8 in contact with the metal core 7 in the axial direction of the fishing rod is in contact with the inner peripheral surface of the original rod tube 1a of the peeling tape 8. Is longer than the length of the outer peripheral surface in the axial direction. However, since the above-mentioned resin molded body 3 has elasticity, it is elastically deformed, and the release tape 8 can be removed.

In this manner, a through fishing rod in which the spiral projection 2 is formed on the inner surface of the original rod tube 1a is manufactured (see FIG. 8). As shown in FIG. 2, the protrusion 2 has a tongue-shaped protrusion 3c protruding toward the distal end of the original rod tube 1a on the upper side of the rod tip.

In the manufacturing method of the through fishing rod according to the above-described first embodiment, the width L of the peeling tape 8 is in the range of 3 to 9 mm, most preferably 3 mm. The thickness Th of the release tape 8 is in the range of 0.4 to 0.6 mm, and is 0.4 m
m is most desirable. The diameter D of the fiber string 4 is 0.6-0.
Within the range of 8 mm, 0.6 mm is most desirable. In the fiber string and release tape winding step, release tape 8
Is shifted to the rod tip side, the interval G between the fiber string 4 and the release tape 8 is in the range of 0.3 to 1 mm, and 0.3
mm is most desirable. In the winding step, the tension applied to the fiber string 4 and the release tape 8 is in the range of 1 to 5 kg, and 2 kg is most desirable. Also, release tape 8
The angle at which the fiber string 4 is wound around the metal core 7 is in the range of 45 to 70 degrees with respect to the axis of the metal core 7, and most preferably 60 degrees.

Next, the second fishing rod according to the present invention will be described.
The manufacturing method according to the embodiment will be described below with reference to FIGS.

As in the first embodiment, the manufacturing method of the fishing rod according to the second embodiment of the present invention comprises the steps of winding a fiber string and a release tape, winding a prepreg, firing a pressure, Although the method includes a cored bar and a release tape removing step, except for the fiber string and the release tape winding step, the method of manufacturing the through fishing rod according to the second embodiment is the same as the method of manufacturing the through fishing rod according to the first embodiment. Are identical. Therefore,
Only the fiber string and release tape winding step will be described below,
Other prepreg winding step, pressure firing step, and
A description of each of the core metal and release tape removing steps will be omitted.

In the fiber string and peeling tape winding step in the first embodiment, the notch-shaped space 9 is formed at the rod-side end of the peeling tape 8 at the contact point with the core 7. The above description is based on the assumption that the fiber string 4 and the peeling tape 8 are alternately spirally wound from the rod base side to the rod tip side with tension in the direction of the arrow Te on the cored bar 7. In the embodiment, as shown in FIGS. 9 and 10, a notch 11
A release tape 11 having a is used.

That is, in the second embodiment, the fiber string 4 and the above-described peeling tape 11 may be alternately spirally wound around the cored bar 7, and as in the first embodiment, from the pole base side. It is not necessary to apply a large tension to the pole tip side in the direction of arrow Te. In other words, if the special peeling tape 11 having the notch 11a described above is used, it is not necessary to perform a special winding step as in the first embodiment.

Next, the prepreg winding step, the pressure baking step, and the step of removing the cored bar and the release tape are performed in the same manner as in the first embodiment.
The inside fishing rod having the spiral projection 2 formed on the inner surface of the fishing rod is manufactured. As shown in FIG. 2, the protrusion 2 has a tongue-shaped protrusion 3c protruding toward the distal end of the original rod tube 1a on the upper side of the rod tip.

In the second embodiment described above, the fiber string and release tape winding step is performed by alternately spirally winding the fiber string 4 and the above-described release tape 11 around the cored bar 7. Although it has been described as the one, it is also possible to wind in a ring shape instead of a spiral shape. In this case, a plurality of ring-shaped protrusions are formed on the inner surface of the original rod tube 1a at intervals, instead of the spiral protrusions.

Next, a through fishing rod according to a second embodiment of the present invention will be described below with reference to FIGS.
In FIGS. 11 and 12, F indicates the direction on the rod tip side of the through fishing rod, and R indicates the direction on the rod base side.

The through fishing rod according to the second embodiment of the present invention is the same as the through fishing rod according to the first embodiment of the present invention except that the former projection 12 is different from the latter projection 2 in the longitudinal sectional shape. is there.

That is, like the projection 2, the projection 12 is composed of the resin molded body 13 and the fiber string 14 disposed therein, but has a trapezoidal shape different from that of the projection 2. ing.

The protrusion 12 has a longitudinal section as shown in FIG.
As is clear from FIG. 12 and FIG.
It has a rear surface 13d and an upper side 13a acting as a fishing line guide flat surface.

As shown in FIG. 12, the front surface 13b is inclined such that the innermost peripheral portion is located closer to the distal end of the rod tube 1a than the outermost peripheral portion. Surface 1 on the inner side of the trapezoid exposed on the surface
The angle θ1 between 3b and the inner surface of the rod tube 1a is maintained at an obtuse angle.

On the other hand, as shown in FIG. 12, the rear surface 13d is inclined so that the innermost peripheral portion is located closer to the distal end of the rod tube 1a than the outermost peripheral portion. In the trapezoidal inner angle exposed in the vertical section, the angle θ2 between the rear surface 13d and the inner surface of the rod tube 1a is maintained at an acute angle.

As is apparent from FIG. 12, the inclination angle of the rear surface 13d with respect to a straight line perpendicular to the inner surface of the rod tube 1a is significantly larger than the inclination angle of the front surface 13b with respect to the straight line. Therefore, only the rear surface 13d is hereinafter referred to as an "inclined surface".

The upper side 13a is located parallel to the inner surface of the rod tube 1a as a fishing line guide flat surface. Therefore, as is clear from FIG. 12, a sharp corner 13c as a protruding portion is formed at a connecting portion between the innermost peripheral portion of the front surface 13d and the upper side 13a. The fishing line guide flat surface 13a and the inclined surface 13d are connected to each other at an obtuse angle that is a supplementary angle to the angle θ2, and a corner is formed there.

The projection 12 having the above-described shape is used as the rod tube 1a.
As shown in FIG. 11, the rod tube 1 exposed between the adjacent protrusions 12, 12, that is, exposed between the adjacent protrusions 12, 12 by being spirally formed on the inner surface of the rod 1.
The length L1 of the inner surface of a is configured to be greater than the height H of the protrusion 12, that is, the protrusion length. Here, assuming that the height H of the projection 12 is constant and the amount of water droplets attached to the fishing line and sent to the recess G is constant, the length L1 of the flat portion of the recess G is determined by the height H of the projection 12. By making it larger, the capacity of the concave portion G is increased, and therefore, the depth of water staying in the concave portion G can be reduced. As a result, the water is prevented from adhering to the fishing line guide flat surface 13a and the sharp corners 13c as the protruding portions.

In the protrusion 12 of the through fishing rod described above,
The fishing line guide flat surface 13a has a function of reliably guiding the fishing line without damaging the fishing line in the rod tube 1a. On the other hand, when the fishing line moves,
The water droplets adhering to this are scraped off and the front surface 13 is removed.
A water pool is formed on the b side, and has an effect of preventing the water droplets from being further fed into the inside of the rod tube 1a. By removing water droplets from the fishing line in this manner, the sliding resistance of the fishing line between the fishing line guide flat surface 13a and the protrusion 13c can be reduced.

Further, since the inclined surface 13d of the projection 12 is inclined toward the front side of the rod 1a at a large inclination angle with respect to a straight line perpendicular to the inner surface of the rod 1a, the tip of the through fishing rod is moved downward. In this way, the water remaining in the concave portion G can be sequentially overflowed into the concave portion G located on the front side of the rod tube 1a, so that the water can be easily discharged to the outside of the fishing rod. .

The through fishing rod according to the above-described second embodiment of the present invention is similar to the method of manufacturing the through fishing rod according to the above-described first embodiment of the present invention, in which a fiber string and a peeling tape are wound, a prepreg is wound. It is manufactured by performing a step, a pressure baking step, and a step of removing a cored bar and a release tape. FIG. 13 schematically shows only the pressure firing step, and a detailed description of the manufacturing method is omitted. In FIG. 13, reference numeral 7 denotes a cored bar, 12 denotes a protrusion, 13 denotes a resin molded body, 14 denotes a fiber string, and 18 denotes a release tape. However, the release tape 18 has a trapezoidal shape corresponding to the concave portion G formed between the adjacent protrusions 12.

Next, a through fishing rod according to a third embodiment of the present invention will be described below with reference to FIG. Third of the present invention
The penetrating fishing rod according to the embodiment is the same as the penetrating fishing rod according to the second embodiment of the present invention except that the former projection 22 is slightly different from the latter projection 12 in the longitudinal sectional shape.

That is, like the protrusion 12, the protrusion 22 is composed of a resin molded body 23 and a fiber string 24 disposed therein, and in a longitudinal section thereof, as is apparent from FIG. Side surface 23b, a rear surface, that is, an inclined surface 23d, and an upper side 23a acting as a fishing line guiding surface, but a connecting portion between the fishing line guiding flat surface 23a and the inclined surface 23d includes: Instead of the corners shown in FIG.
A surface 23e is formed. The guide line can be more smoothly guided by the R surface 23e.

The boring fishing rod according to the third embodiment of the present invention is also similar to the manufacturing method according to the above-described first embodiment of the boring fishing rod of the present invention, in which a fiber string and a peeling tape winding step, a prepreg winding step are performed. It is manufactured by performing a rounding step, a pressure baking step, and a step of removing a cored bar and a release tape. Therefore, description of the manufacturing method is omitted. However, in order to form the above-described R surface 23e, as shown in FIG. 15, the peeling tape 28 has an arc-shaped concave portion 28a on the upper surface of the tip portion 28a corresponding to the R surface 23e.

In the above-described through fishing rod, the protrusions 2, 1
Although 2 and 22 have been described as being formed spirally on the inner surface of the rod tube 1a, they may be formed in a ring shape.

If the inner surface of the rod tube 1a is subjected to a water-repellent treatment, water can be more effectively discharged from the rod tube 1a.
The guide of the fishing line is smoothly performed, and the line of the fishing line can be maintained extremely well. This water-repellent treatment is performed on three surfaces of the protrusions 2, 12, and 22, and the rod tube 1 exposed between the adjacent protrusions.
Any specific means can be used as long as it imparts water repellency to the inner surface of a. For example, a thin nozzle is inserted into the rod tube R1 from the rod base side toward the rod tip side. This is performed by pulling out the nozzle toward the pole while spraying a fluorine-based or silicone-based resin paint.

[0061]

As described in the first aspect, the through fishing rod of the present invention has a spiral or ring-shaped protrusion on the inner surface of the rod tube, and the cross-sectional shape of the protrusion is on the upper side of the rod tip side. Since it has a protruding part toward the tip side of the rod pipe, water droplets attached to the fishing line can be scraped off when the fishing line is wound, and water remaining between adjacent protruding parts will be on the upper surface of the protruding part. Movement can be suppressed, and as a result, an increase in the sliding resistance of the fishing line can be avoided.

According to a second aspect of the present invention, in the boring fishing rod according to the first aspect, if the projecting portion has elasticity, the projecting portion follows the movement of the fishing line to elastically deform, thereby making the water droplet effective. It is possible to improve the efficiency of removing water droplets by dropping iron.

According to a third aspect of the present invention, in the through fishing rod according to the first or second aspect, the cross-sectional shape of the protrusion is
If the rod tip side has a substantially trapezoidal shape with an obtuse angle to the rod pipe inner surface, and the rod base side has an inclined surface that is sharp at an angle to the rod pipe inner surface, water adhering to the fishing line to be wound can be removed from the rod tip side. The iron can be scraped off at the corner between the obtuse surface and the upper side of the trapezoid to minimize water intrusion into the rod. In addition, since the fishing line to be wound is guided by the entire upper side of the trapezoid, even if a large load is applied to the fishing line, the guide surface is not damaged, and the surface of the fishing line or the PE (polyethylene) line is damaged. A fishing line having an uneven surface as described above can be smoothly guided. Furthermore, since the rod base side of the projection is formed on an inclined surface, the fishing rod is bent when winding the fishing line, or by lowering the rod tip of the fishing rod when feeding the fishing line, etc. The water that has been scraped down at the corner of the pole tip and stays there is reliably sent to the pole tip side and can be discharged. In particular, if the protrusion is formed in a spiral shape on the inner surface of the rod pipe, in combination with the inclined surface on the rod base side,
The water staying at the rear of the protrusion can be smoothly sent to the pole tip side and discharged.

According to a fourth aspect of the present invention, in the through fishing rod of the third aspect, if the connecting portion between the upper side of the trapezoid and the acutely inclined surface is an R surface, smoother guidance of the fishing line can be realized. Water drainage is also more effective.

According to a fifth aspect of the present invention, in the through fishing rod according to any one of the first to fourth aspects, the length of the flat portion of the concave portion formed between the adjacent projections is set to the height of the projection. If it is longer than this, even if water enters the rod pipe, it will stay at a relatively shallow depth on the plane of the concave portion, and this water will flow into the fishing line guide flat surface and sharp corners as protrusions. Adherence is avoided. As a result, it is possible to guide the fishing line more smoothly.

As described in the sixth aspect, in the through fishing rod according to any one of the first to fifth aspects, if the inner surface of the rod is subjected to a water-repellent treatment, the water in the rod can be reliably discharged. The fishing line can be guided more smoothly.

According to a seventh aspect of the present invention, in the method for manufacturing a through fishing rod according to the present invention, a tension is alternately applied from a rod base side to a rod tip side with a fiber string and a peeling tape on a core metal for forming a fishing rod. Spirally, forming a notched space at the end of the rod at the point where the peeling tape comes into contact with the core metal, and forming a fishing rod body on the wound fiber string and the peeling tape. The prepreg is wound, and the prepreg is calcined under pressure, a part of the molten prepreg penetrates into the notch-shaped space around the fiber string and the notch-shaped space, and is hardened. It is characterized by forming a helical protrusion having a protrusion protruding toward the distal end side of the rod tube, and then removing the core metal and the peeling tape, so that a protrusion with a protrusion is provided. Through fishing rods can be easily manufactured at low cost.

According to the eighth aspect of the present invention, the method of manufacturing a through fishing rod according to the present invention comprises the steps of:
A fiber string and a peeling tape wound alternately with a peeling tape having a cutout portion at a position where the peeling tape comes into contact with the core metal on the rod side, spirally or in a link form from the rod side to the rod tip side. A prepreg for forming a fishing rod body is wound on top of the above, the prepreg is calcined under pressure, a part of the prepreg is infiltrated into the surroundings of the fiber string and the notch, and is hardened to form a rod tip. Form a spiral or ring-shaped protrusion having a protrusion protruding toward the tip side of the rod tube on the upper side,
Since the core bar and the release tape are removed, it is not necessary to apply a special tension in the fiber string and release tape winding step, and due to this, it has a protrusion with a protrusion. Through fishing rods can be easily manufactured at lower cost. Further, according to this method, the projection can be formed not only in a spiral shape but also in a ring shape.

[Brief description of the drawings]

FIG. 1 is a partial schematic cross-sectional view showing a through fishing rod according to a first embodiment of the present invention.

FIG. 2 is an enlarged partial sectional view of the through fishing rod shown in FIG. 1;

FIG. 3 is a partial cross-sectional view showing a step of winding a fiber string and a peeling tape in the method of manufacturing the through fishing rod according to the first embodiment of the present invention.

FIG. 4 is a cross-sectional view of a peeling tape before tension is used, which is used in the method of manufacturing the through fishing rod according to the first embodiment of the present invention.

FIG. 5 is a cross-sectional view of the release tape after the tension is applied, which is used in the method of manufacturing the through fishing rod according to the first embodiment of the present invention.

FIG. 6 is a partial cross-sectional view showing a prepreg winding step in the method of manufacturing the through fishing rod according to the first embodiment of the present invention.

FIG. 7 is a partial cross-sectional view showing a pressure firing step in the method of manufacturing the through fishing rod according to the first embodiment of the present invention.

FIG. 8 is a partial cross-sectional view showing a step of removing a cored bar and a release tape in a method of manufacturing a through fishing rod according to the first embodiment of the present invention.

FIG. 9 is a partial cross-sectional view showing a prepreg winding step in a method of manufacturing a through fishing rod according to a second embodiment of the present invention.

FIG. 10 is a cross-sectional view of a release tape used in a method of manufacturing a through fishing rod according to a second embodiment of the present invention.

FIG. 11 is a partial schematic sectional view showing a through fishing rod according to a second embodiment of the present invention.

FIG. 12 is a schematic view showing a protrusion of the through fishing rod of FIG. 11;

FIG. 13 is a schematic view showing a firing step for manufacturing the fishing rod of FIG. 11;

FIG. 14 is a partial schematic cross-sectional view illustrating a through fishing rod according to a third embodiment of the present invention.

FIG. 15 is a sectional view showing a peeling tape used for manufacturing the fishing rod of FIG. 14;

[Explanation of symbols]

 1a Original rod pipe 1b Tip rod pipe 2,12,22 Projection 3c, 13c, 23c Projection 4,14,24 Fiber string 7 Core 8,11,18,28 Peeling tape 9 Space 10 Prepreg 11a Notch

Claims (8)

[Claims] A rod-shaped inner surface has a spiral or ring-shaped protrusion, and the cross-sectional shape of the protrusion has a protrusion toward the tip end of the rod tube on the upper side of the rod tip. Through fishing rod. 2. The fishing rod according to claim 1, wherein said projection has elasticity. 3. The cross-sectional shape of the projection is formed in a substantially trapezoidal shape in which the rod tip side is formed at an obtuse angle with respect to the inner surface of the rod tube and the rod base side is formed as an inclined surface which is formed at an acute angle with respect to the inner surface of the rod tube. The through fishing rod according to claim 1 or 2, wherein: 4. The fishing rod according to claim 3, wherein a connecting portion between the upper side of the trapezoid and the acutely inclined surface is an R surface. 5. The method according to claim 1, wherein a length of a plane portion of the concave portion formed between the adjacent protrusions is longer than a height of the protrusion. Through fishing rod. 6. The fishing rod according to claim 1, wherein a water-repellent treatment is applied to an inner surface of the rod tube. 7. A fiber rod and a peeling tape are alternately wound on a core metal for forming a fishing rod by applying tension from a rod base side to a rod tip side and spirally wound, and a contact portion of the peeling tape with the core metal is formed. A notch-shaped space is formed at the end of the rod base side, and a prepreg for forming a fishing rod main body is wound on the wound fiber string and release tape, and the prepreg is pressure-fired and melted. A part of the helical protrusion having a protrusion protruding toward the distal end of the rod tube on the upper side of the rod tip side is hardened by infiltrating a part thereof into the periphery of the fiber string and the notched space. Forming a portion, and then removing the cored bar and the release tape. 8. A fishing rod is formed from a rod base side to a rod tip side alternately with a fiber string and a peeling tape having a cut-out portion at a position where it comes into contact with the rod base side. Alternatively, a prepreg for forming a fishing rod main body is wound on the wound fiber string and release tape wound in a link shape, and the prepreg is pressurized and fired, and the melted part is wrapped around the fiber string and cut off as described above. A spiral or ring-shaped protrusion having a protrusion protruding toward the tip end of the rod tube is formed on the upper side of the rod tip side by infiltrating into the notch portion and curing the same. And a method of manufacturing a through fishing rod comprising removing the release tape.