JPH09248103A - Top of fishing rod - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the subject readily bendable and high-elastic modulus top of uniform conditions by forming a small-diameter latter half part, prepared by extending a core part from a large-diameter former half part having an outer cover part which is a carbon fiber and the core part that is a glass fiber and exposing the glass fiber. SOLUTION: This top A of a fishing rod comprises a large-diameter former half part X close to a part near the hand and a small-diameter latter half part Y far therefrom and is obtained by arranging a carbon fiber 2 in the outer cover part of the former half part X and a glass fiber 1 in a core part, extending the glass fiber 1 in the core part of the former half part X by a constant length, exposing the glass fiber 1 and forming the latter half part Y. A tapered guide part X11 is formed at the lower end of a connecting part X1 to be inserted into a rod piece.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fishing rod, and more particularly to a tip of a fishing rod.

[0002]

2. Description of the Related Art In recent years, many fishing rods have been developed. Among the fishing rods, many of them are related to the original rod because they are to be equipped with reels and provided with grips. By the way, in the fishing rod, the tip of the fishing rod attached to the tip of the rod is also extremely important because it faithfully conveys the hit of the fish. For example, in the case of surf fishing, when fishing a black sea bream or the like, the tips receive a strong pulling force, but a strong repulsive force corresponding thereto is required.

Conventionally, in order to deal with this repulsive force,
The tips of fishing rods made of high-elasticity all-carbon are mainly used. The tip of the carbon is made of solid carbon fiber. In this case, carbon fiber is hardened with epoxy resin or the like. On the other hand, the tips need to be able to detect delicate hits of fish, and are required to be relatively thin. The tip made of all-carbon can withstand a strong repulsive force, but it is inevitably hard due to the characteristics of carbon fiber. Therefore, the hit is sensitive and lacks in ease. Because of this, carbon fiber and glass fiber, which is easier to bend,
The tip was developed using two materials together.

FIG. 6 schematically shows the tips of the ears. That is, the front half X on the hand side is a portion using the carbon fiber 3, and the upper half Y on the upper side is the glass fiber 4
Is used as the part. The tips are made by joining a rod piece of glass fiber 4 to a rod piece of carbon fiber 3. In the case of this tip, a boundary surface F of two different materials is formed on the surface where the carbon fiber 3 and the glass fiber 4 are joined. Therefore, when viewed as the entire tip, discontinuity occurs in the portion from the carbon fiber 3 to the glass fiber 4, and the tone of the entire tip is not uniform.

[0005]

The present invention has been made based on such a technical background. That is, an object of the present invention is to provide a tip that has both flexibility and high elasticity and has a uniform tone.

[0006]

Means for Solving the Problems The present inventors have conducted intensive studies on such problems, and as a result,
It was found that the clad portion is removed and the core portion is exposed on the surface by polishing the two-layer circular rod body composed of the clad and the core from the periphery, and the present invention has been completed based on this finding. is there.

That is, the present invention is as follows: 1. The tip of a fishing rod comprising a large diameter front half portion having a carbon fiber outer shell and a glass fiber core portion and a thin rear half portion exposed by extending the core portion. Exist in.

2. In the region from the first half of the large diameter to the second half of the small diameter, the carbon fiber as the outer cover has a gradually decreasing portion to reach the glass fiber as the core. It exists at the tip of the fishing rod of No.1.

[0009] In addition, the third half, which has a small diameter, exists in the tip of the fishing rod of the above-mentioned item 1 whose outer diameter gradually decreases toward the end.

Further, 4, the tip of the above-mentioned fishing rod has the outer diameter of the connecting portion having a constant thickness and the outer diameter of the tightening portion having a reverse taper thickness in the front half portion.

In addition, 5, in a two-layer circular rod body having a carbon fiber outer shell and a glass fiber core, a certain area of the outer shell is ground so as not to expose the core and has a large diameter. The first half of the above, and a certain area where the outer cover remains is ground until the core is exposed, and the second half of the fishing rod has a small diameter.

Further, 6, the connecting portion and the tightening portion are
The certain region of the outer cover part is present in the tip of the fishing rod of the above 4 formed by changing the degree of polishing so that the core part is not exposed.

[0013]

[Function] When the drawing force is received, the second half of the small diameter, which is the front side, becomes soft and detects a sensitive hit. Since the common core of the glass fiber passes through the large diameter front half and the small diameter rear half, the tone acts uniformly on the whole. Further, the large-diameter first half portion generates a strong repulsive force and can cope with a strong pull. In the large diameter first half, the carbon fiber functions to reinforce the glass fiber.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION The tip of the present invention will be described below with reference to FIGS. FIG. 1 shows a first embodiment of the tip A. FIG. 2 is a view showing a cross section of each part in the tip A of FIG. The tip A of the present invention is
It consists of a large-diameter front half portion X close to the hand and a small-diameter rear half portion Y smaller in diameter than the front half portion.

The large-diameter first half portion X is a jacket portion ("clad").
Also called carbon fiber 2, the core (“core”)
Is said to have a structure formed of glass fiber 1. The carbon fiber 2 of the outer cover is formed by hardening the carbon fiber 2 with a thermosetting resin such as an epoxy resin, and the glass fiber 1 of the core is formed by hardening the glass fiber 1 with a thermosetting resin such as an epoxy resin. It is a thing. Since the carbon fiber 2 is provided on the glass fiber 1 which is the core portion of the large diameter first half portion X, the relatively flexible glass fiber 1 is a highly elastic carbon fiber, that is, a relatively difficult to bend carbon fiber. The structure is reinforced by 2.

The latter half Y of the thin diameter is glass fiber 1
The glass fiber 1 is made by exposing the glass fiber 1, which is the core of the large diameter first half X, by extending it by a certain length. Therefore, the large diameter first half X
There is no material mismatching joint between the small diameter Y and the second half Y, and the core of the glass fiber 1 passes continuously, so that there is no discontinuity having a boundary surface as in the prior art. .
A connecting portion X1 having a constant diameter to be inserted into the rod piece is formed in the front half portion X having a large diameter, and in this connecting portion X1, the carbon fiber 2 as the outer covering portion has a constant thickness. It has become.

Further, at the tip of the connecting portion X1, a tightening portion X2 whose diameter becomes thicker as it goes forward is formed in a reverse taper shape, and the carbon fiber 2 which is the outer covering portion here is first formed. The reverse taper thickness becomes thicker as it goes. When the connecting portion X1 of the tip A is fitted into the rod piece and continued,
The tightening portion X2 securely tightens and couples the two.

Further, a tapered guide portion X11 is formed at the lower end of the connecting portion X1, and this guide portion X11 is a guide portion for inserting the tip A into the rod piece. On the other hand, in the region from the large diameter front half portion X to the small diameter rear half portion Y, the carbon fiber 2 which is the outer covering portion is gradually reduced to form the gradually decreasing portion X3 which reaches the glass fiber 1 which is the core portion. .
In the tip A, the tapering portion X3 is the front half portion X of the large diameter portion.
This is to ensure that the hardness does not change abruptly in the process from to the second half Y of the small diameter portion. The tip A is provided with the gradual decrease portion X3, so that
The influence of the highly elastic carbon fiber 2 is reduced, and the influence of the glass fiber 1 which easily bends increases. Due to such a structure, it is possible to ensure extremely uniform bending as a whole of the tip.

Next, a method for manufacturing the tip A as described above will be briefly described. FIG. 3 is a diagram illustrating an outline of a method for manufacturing the tip A. First, a circular rod body having a core portion made of glass fiber 1 and an outer covering portion made of carbon fiber 2 as a base material A1 is prepared. The two cylindrical grindstones 11 and 12 are arranged such that their axes intersect with each other at the set angle θ and the set distance L. A circular rod body is placed on the base 13 in front of an extension line passing through the intersection of the two grindstone shafts and made to stand by.

The upper surface 13A of the base 13 is a V-shaped elongated body, which is inclined forward, that is, toward the grindstones 11 and 12,
The circular rod is supported by this V-shaped portion. Next, the two grindstones 11 and 12 are rotated to the opposite sides. The circular rod is pushed in along the inclined base 13 in the direction of the intersection using its own weight. The moved circular rod body is a blade stand 14
Supported while in contact with the inclined surface of. On the other hand, the grindstones 11 and 1
When the surface of the circular rod comes into contact with 2, the circular rod starts to rotate together with the grindstones 11 and 12.

Then, along with the feeding of the circular rod, the grindstone 1
The outer peripheral surface of the circular rod body as the base material A1 is gradually polished by the surfaces of 1 and 12. Here, both cylindrical grindstones 1
The minimum interval of 1 and 12 is equivalent to the length of the minimum diameter of the circular rod body, and the inclination angles of both the cylindrical grindstones 11 and 12 are the inclined surfaces of the outer peripheral surface of the circular rod body. In addition, since the axial lengths of the grindstones 11 and 12 correspond to the portions where the base material A1 is processed, the longer the grindstones 11 and 12, the longer the area in contact with the circular rod body for polishing.

In the manufacture of the tip A of FIG. 1, first, in the connecting portion X1, the tip A is moved and polished while the grindstones 11 and 12 having both cylindrical shapes are parallel to each other. The tightened portion X2 is formed in a taper shape by inclining and polishing both cylindrical grindstones 11 and 12. The second half Y of the small diameter is the tip A.
Both sides of the cylindrical grindstone 1 are tilted and pushed
Polished between 1 and 12. Then, the gradually decreasing portion X3 is formed by polishing with a slight weakening of the inclination of both the cylindrical grindstones 11 and 12. An example of the tip A produced by such a method is shown below.

FIG. 4 (a) is a view showing a tip A having a short second half Y having a small diameter and a long gradually decreasing portion X3 of a front half X having a large diameter. Since the gradually decreasing portion X3 is made sufficiently long, the second half portion Y having a small diameter is short. Due to the long tapering portion X3, the thickness of the carbon fiber 2 which is the outer covering portion extremely gradually decreases and does not change extremely, so that this portion becomes flexible. Therefore, since the small-diameter portion is short, the tip A of the tongue is obtained. In FIG. 4B, the second half Y of the small diameter is long,
It is a figure which shows the tip A in which the taper part X3 of the front half part X of a large diameter is short. The ratio of the first half X and the second half Y is approximately half. Since the gradual decrease portion X3 is short, the thickness of the carbon fiber 2 is rapidly reduced, so that a large boundary is formed at this portion. Therefore, it is close to the tip A of the original tone.

FIG. 5 (a) is a view showing a tip A for a single rod which does not have the tightening portion X2. The ratio of the first half X and the second half Y is the same as in FIG. 1, but the first half X does not have the tightened portion X2. Such a tip A is used when making a single rod, and the connecting portion is integrally fixed to the rod piece with an adhesive or the like. The deflection of the tip A is in the middle position and the tone is in the middle tone. FIG. 5B is a diagram showing the tip A for shaking out, which has a large-diameter portion without the tightening portion X2. Although the ratio of the front half X and the rear half Y is the same as in FIG. 1, the front half X does not have the tightened portion X2, and the tapered large diameter portion X12 is separately provided at the end of the tip. The large-diameter portion X12 is fastened to the inner wall of the rod piece to be a swinging rod. The bending of the tip A is in the middle position and the tone is in the middle tone.

The preferred embodiments of the present invention have been described above, but various modifications and the like are possible without departing from the scope of the present invention. For example, the ratio of the large-diameter portion, the small-diameter portion, the gradually decreasing portion X3, etc. of the tip A to be produced by the method of the present invention is to adopt a predetermined ratio depending on the tone (for example, the tone tone, the main tone, etc.) Become.

[0026]

As described above, according to the present invention, the large diameter portion bears a strong repulsive force when it is pulled in during fishing. Further, the small-diameter portion flexes softly, and the contact can be reliably detected. In that case, in the large diameter portion, the carbon fiber as the outer covering portion acts so as to reinforce the glass fiber as the core portion from the outside. Since the common glass fiber passes through the large-diameter portion and the small-diameter portion, there is no discontinuous surface and the tone is uniform over the entire tip. Similarly, since the taper portion is provided, there is no discontinuous surface and the tone is uniform over the entire tip.

[Brief description of drawings]

FIG. 1 is a half sectional view showing a structure of a tip in an embodiment of the present invention.

FIG. 2 is a view showing a cross section of each part of FIG.

FIG. 3 is a diagram illustrating a method for manufacturing a tip.

FIG. 4 is a half cross-sectional view showing an example of an embodiment of the tip of the present invention. (A) shows a long tip of a taper part, (b) shows a short tip of a taper part.

FIG. 5 is a half cross-sectional view showing another example of the embodiment of the tip of the present invention. (A) shows a tip for a single rod without a tight part, and (b) shows a tip for a blowout rod without a tight part X2.

FIG. 6 is a half sectional view showing a conventional tip.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Glass fiber 2 ... Carbon fiber 11, 12 ... Whetstone 13 ... Base 13A ... Upper surface 14 ... Sword stand A ... Tip A1 ... Mother L ... Interval X ... Front half X1 ... Connection part X11 ... Guide part X12 ... Large diameter Part X2 ... Tightened part X3 ... Gradual decrease part Y ... Half part θ ... Angle

Claims (6)

[Claims] 1. A tip of a fishing rod having a large diameter front half portion having a carbon fiber outer shell and a glass fiber core portion and a thin second half portion exposed by extending the core portion. 2. The region from the front part of the large diameter to the rear part of the small diameter has a gradually decreasing part where the carbon fiber as the outer covering part gradually decreases to reach the glass fiber as the core part. The tip of the fishing rod according to claim 1. 3. The tip of a fishing rod according to claim 1, wherein the outer diameter of the second half portion having a small diameter gradually decreases toward the end. 4. The tip of a fishing rod according to claim 1, wherein the front portion having a large diameter has a connecting portion with a constant thickness and a tightening portion with a reverse taper thickness. 5. A two-layer circular rod body having a carbon fiber outer shell and a glass fiber core, wherein a predetermined region of the outer shell is ground to prevent the core from being exposed to form a large-diameter first half portion. The tip of a fishing rod is characterized in that a certain area of the outer cover portion is ground until the core portion is exposed to form a thin second half portion. 6. The tip of a fishing rod according to claim 4, wherein the connecting portion and the tightening portion are formed by changing a degree of polishing so that the core portion does not expose a certain region of the outer covering portion. .