JP6992143B2 - Tip rod and fishing rod - Google Patents

Description

The present invention relates to a tip rod that is excellent for capturing a delicate hit such as a swordtip squid.

Conventionally, as the tip rod, a solid rod-shaped body formed by impregnating a matrix resin such as epoxy into a group of reinforced fibers in which glass fibers having higher flexibility than carbon fibers are aligned in the axial direction has been adopted. (Patent Gazette 1).
However, as described above, the solid rod-shaped body made of glass fiber alone has a surface in which the torsional rigidity is not sufficient. Therefore, conventionally, there has been a case in which a prepreg sheet such as carbon fiber is wound as an outer layer on the outside of a core body which is a solid rod-shaped body.

Japanese Unexamined Patent Publication No. 2015-123066 (paragraph number [0017], FIG. 2)

In the above-mentioned conventional configuration, it is possible to increase the torsional rigidity by winding the prepreg sheet on the outside, thereby suppressing lateral movement of the tip of the tip when pulling out the fish and avoiding deterioration of fishing operability. We were able to.
However, it is undeniable that the rigidity is excessively increased by winding the prepreg sheet on the outside, the flexibility of the glass fiber is impaired, and the catching property of the delicate hit is lowered.

Moreover, by winding the prepreg sheet, the tip rod becomes heavier, and improvement in operability has been desired.

An object of the present invention is to provide a tip rod having high torsional strength and less plastic deformation, etc., while being a rod body based on a solid rod-shaped core body.

〔Constitution〕
The characteristic configuration of the invention according to claim 1 is a tip rod provided with a core body and an outer layer located outside the core body, and the core body is a glass reinforcing fiber aligned in a direction along an axis. It is a solid rod-shaped body made of matrix resin impregnated in groups.
Its core body is
A conical rod-shaped body that gradually increases in diameter from the small diameter part on the rod tip side to the large diameter part on the rod base side, and a conical rod-shaped body that is connected to the rod base side and gradually increases toward the rod base side. It is provided with a contact inclined surface whose diameter is reduced, and a columnar columnar portion that is connected to the rod base side of the contact inclined surface and extends toward the rod base side.
Its outer layer is
The inner prepreg tape for the narrow outer layer, which aligns the reinforcing fibers along the longitudinal direction and is spirally wound along the axial direction with a certain spiral interval in the axial center direction, and the longitudinal direction. The outer prepreg tape for the narrow outer layer, which aligns the reinforcing fibers along the direction and is spirally wound along the axial direction with a certain spiral interval in the axial core direction, and the conical rod shape. An X-winding helix in which the inner prepreg tape and the reinforcing fibers of the outer prepreg tape are wound around the outside of the body so as to intersect each other in a radial direction.
The inner prepreg tape and the outer prepreg tape have a width substantially similar to the diameter of the small diameter portion of the conical rod-shaped body, and the spiral spacing is set to 4 to 6 times the width of the prepreg tape, and the outer circumference of the conical rod-shaped body is set. It is wound around the surface, and its action and effect are as follows.
The characteristic configuration of the invention according to claim 2 is a fishing rod including a tip rod, a hollow tip rod connected and fixed to the tip rod by a parallel joint method, and a fishing rod.
The tip rod is
It consists of a core body, which is a solid rod-shaped body made of matrix resin impregnated with a group of glass reinforcing fibers aligned in the direction along the axis, and an outer layer located on the outside of the core body.
Its core body is
A conical rod-shaped body that gradually increases in diameter from the small diameter part on the rod tip side to the large diameter part on the rod base side, and a conical rod-shaped body that is connected to the rod base side and gradually increases toward the rod base side. The diameter is reduced, and the contact inclined surface that comes into contact with the receiving inclined part of the Homochi rod and the contact inclined surface are connected to the rod base side and extend toward the rod base side, and are mounted in the cylindrical part of the Homochi rod. With a columnar columnar part,
Its outer layer is
An inner prepreg tape for a narrow outer layer that aligns the reinforcing fibers along the longitudinal direction and is spirally wound along the axial direction at regular spiral intervals in the axial direction.
An outer prepreg tape for a narrow outer layer that aligns the reinforcing fibers along the longitudinal direction and is spirally wound along the axial direction at regular spiral intervals in the axial direction.
An X-winding spiral in which the inner prepreg tape and the reinforcing fibers of the outer prepreg tape are wound around the outside of the conical rod so as to intersect each other in the radial direction.
The inner prepreg tape and the outer prepreg tape have a width substantially similar to the diameter of the small diameter portion of the conical rod-shaped body, and the spiral spacing is set to 4 to 6 times the width of the prepreg tape, and the outer circumference of the conical rod-shaped body is set. It is wound around the surface, and its action and effect are as follows.

[Action]
That is, the outer prepreg tape for the outer layer and the outer prepreg tape for the outer layer are spirally wound and crossed to form an X-shaped outer layer. As a result, the carbon reinforcing fibers arranged in the longitudinal direction of the prepreg tape of the outer layer are arranged in an inclined posture with respect to the axis of the solid rod-like body, and they are arranged so as to intersect in an X shape. Therefore, even if either the left or right twist acts, these carbon reinforcing fibers exert a counterforce, and it was possible to provide a tip rod having a high counterforce against the twist.

Moreover, what is wound around the outside of the solid rod as the outer layer is not a prepreg sheet, but a prepreg tape, and the prepreg tape is wound at a spiral interval, so that it is wound on the outside of the solid rod. Compared to winding the prepreg sheet as the outer layer to be located, it is possible to suppress the increase in rigidity and reduce the weight increase.

However, when the prepreg tape was simply wound in a spiral shape with a spiral interval, plasticity was observed as described in the remarks of FIG. 8 (e).
That is, a test was performed by winding a prepreg tape having a tape width of 3 mm. In the test method, with the hand part attached and fixed to the fixing jig, the tip side was extended in a cantilever shape, and a weight was hung from the tip to monitor the behavior of the tip rod.

Then, the plasticity that the tip rod once bends and does not return to its original state was observed. In this case, when the tape width and the winding lead angle of the tape with respect to the solid rod-shaped body are measured, the winding lead with respect to the axis is found in the portion having a large outer diameter (here, 6 mm diameter) of the original side portion of the solid rod-shaped body. The angle Θ was only 51.5 °.
Then, inevitably, the winding lead angle becomes smaller toward the tip side portion of the solid rod-shaped body as shown in FIG. 8 (e), and the alignment direction of the reinforcing fibers is closer to the direction along the axis X. As a result, the strength against bending became high, the goodness of the solid rod-shaped body made of glass fiber could not be utilized, and the bending rigidity due to the prepreg made of carbon fiber became high, and the occurrence of plasticity was observed.

Therefore, in the present invention, a narrower prepreg tape (tape width 1 mm) is introduced, and the winding lead angle is set to 60 in the portion having a large outer diameter (here, 6 mm diameter) of the original side portion of the solid rod-shaped body. I decided to take a measure to set it from ° to 89 °.
As a result, the wound state of the prepreg tape can be brought closer to the state along the circumferential direction within the entire length of the solid rod-shaped body as compared with the case where the tape width is 3 mm, and the counterforce against the torsional force can be obtained. And the resistance to bending was reduced, and the generation of plasticity could be suppressed.
Moreover, by setting the winding lead angle to an angle that does not reach 60 ° to 89 °, it is possible to suppress the influence on the condition of the rod such as bending related to the tip rod when a fish is caught, and in the axial direction. When bending acts on the tip rod by arranging carbon reinforcing fibers, which have significantly different tensile elastic moduli from the glass reinforcing fibers arranged along the axis, along a direction substantially orthogonal to the axis direction. In addition, the phenomenon that the prepreg tape peeled off from the solid rod-shaped body could be suppressed.

〔effect〕
As described above, it is said that the core body made of glass fiber that can be easily grasped even for delicate pulling is maintained, the appropriate rigidity is maintained, and the tone and bending of the rod or the peeling of the prepreg tape is performed. It was possible to provide a tip rod that suppresses various adverse effects and does not become heavy as a rod.

〔Constitution〕
The characteristic configuration of the invention according to claim 1 is that the outer layer aligns reinforcing fibers along the longitudinal direction and spirally winds along the axial direction with a certain spiral interval in the axial core direction. The inner prepreg tape for the narrow outer layer that has been turned, the reinforcing fibers are aligned along the longitudinal direction, and spirally wound along the axial direction with a certain spiral interval in the axial direction. Outer prepreg tape for the narrower outer layer,
The inner prepreg tape and the reinforcing fibers of the outer prepreg tape are wound around the outside of the conical rod so as to intersect each other in a radial direction, and the inner prepreg tape and the outer prepreg tape are formed in a conical rod shape. The width is substantially the same as the diameter of the small diameter portion of the body, and the spiral spacing is set to 4 to 6 times the width of the prepreg tape, and the effects thereof are as follows.

[Action effect]
In other words, by applying the X-roll prepreg tape that constitutes the outer layer over the entire length, it is possible to increase the torsional strength without leakage from the small diameter side to the large diameter side, and the tip side swings due to the movement of the fish. It becomes easier to handle the rod that suppresses the movement of the fish.

〔Constitution〕
The characteristic configuration of the invention according to claim 2 is a fishing rod including a tip rod and a hollow tip rod connected and fixed to the tip rod by a parallel splicing method.
The outer layer located on the outside of the core body of the tip rod is spirally wound along the axial direction with a certain spiral interval in the axial direction while aligning the reinforcing fibers along the longitudinal direction. The inner prepreg tape for the narrow outer layer and the reinforcing fibers were aligned along the longitudinal direction and spirally wound along the axial direction with a certain spiral interval in the axial direction. Outer prepreg tape for narrow outer layers,
The inner prepreg tape and the reinforcing fibers of the outer prepreg tape are wound around the outside of the conical rod so as to intersect each other in a radial direction, and the inner prepreg tape and the outer prepreg tape are formed in a conical rod shape. The width is substantially the same as the diameter of the small diameter portion of the body, and the spiral spacing is set to 4 to 6 times the width of the prepreg tape, and the effects thereof are as follows.

[Action effect]
That is, the width is substantially the same as the small diameter portion of the solid rod-shaped body, and the spiral spacing is set to 4 to 6 times the tape width, so that the small diameter portion of the solid rod-shaped body is formed. However, since the work of wrapping the prepreg tape is easy and the spiral spacing is sufficient even in the large diameter part, the torsional strength is not increased too much, and the concern about weight increase is suppressed. can.

FIG. 1 is an exploded side view showing a ship rod. 2 and 2 (a) are side views showing a state in which a solid rod-shaped tip rod and a hollow panicle rod are connected, and FIG. 2 (b) is a rear end of a solid rod-shaped tip rod and a hollow panicle. A vertical sectional side view showing a state before connection with the tip of the rod, and (c) is a vertical sectional side view showing a state after connection. FIG. 3 shows a method of manufacturing a hollow Homochi rod, and is a perspective view showing a state before winding the prepreg around a mandrel. 4A is a vertical sectional side view showing a tubular scion rod formed by the manufacturing method of FIG. 3, and FIG. 4B is a rod tip opening from the state of (a) to a smaller diameter toward the rod base side. It is a vertical sectional side view which shows the state which formed the receiving inclined surface. FIG. 5 is a vertical sectional side view showing a state in which a homochi rod and a tip rod are wound and connected with a thread for attachment, and a state in which the paint is further applied from the state in which the thread for attachment is wound. FIG. 6 shows the manufacturing process of the tip rod, (a) is a perspective view showing a solid rod-shaped body as a core body, and (b) is a state in which an inner prepreg tape forming an outer layer is wound around the core body. FIG. 2 (c) is a perspective view showing a state in which the outer prepreg tape is applied so as to be in an X-rolled state in which the outer prepreg tape is crossed with respect to the inner prepreg tape to form an outer layer. 7 (d) is a side view showing the winding lead angle with the axis when the inner prepreg tape is applied to the core body, and FIG. 7 (e) shows the specifications and the winding lead angle of the inner and outer prepreg tape in (d). It is a table showing. FIG. 8 shows a comparative example with respect to the invention shown in FIG. 6, in which FIG. 8D is a side view showing a winding lead angle with an axis when the inner prepreg tape is applied to the core body, and FIG. 8E is a side view showing the winding lead angle. It is a table which shows the specification and the winding lead angle of the inner and outer prepreg tapes in (d).

[Embodiment]
The parallel type ship rod A will be described. As shown in FIGS. 1 and 2, the ship rod A is configured by connecting a rod tip rod B on the rod tip side and a main rod C on the rod base side in a parallel joint manner. The rod tip rod B is provided with a fishing line guide 3 such as a top guide and an intermediate guide at the tip of the rod, and as shown in FIG. 1, the rod tip rod B has a solid rod-shaped body having a length L1 as a core body. It is composed of a small-diameter tip rod 1 and a hollow large-diameter tip rod 2 having a length L2 that is connected and fixed to the small-diameter tip rod 1. A parallel connection method is adopted for connecting the original rod C and the large-diameter Homochi rod 2, and the rod tip Ca of the original rod C is inserted and fitted into the rod tail end 2D of the Homochi rod 2. It is configured to be connected.
Here, the tip rod 1 and the ear mochi rod 2 will be described with an external fishing line guide 3.

As shown in FIG. 1, a reel seat 11 having a movable hood 10 and a rear grip 12 are attached to a blanks 9 on a blanks 9 and a original rod C connected in parallel to the rod tail end of the Homochi rod 2. be.
The small-diameter tip rod 1 is composed of a solid rod-shaped core body and an outer layer 1D made of a prepreg tape 13 wound around the core body.

The core body of the tip rod 1 will be described. As shown in FIG. 2B, the core body is formed in a conical rod-shaped body 1C whose diameter gradually increases along the axis X direction of the rod, and the maximum diameter portion formed near the base end of the rod. A contact inclined surface 1A as an inclined outer peripheral surface whose diameter is reduced toward the rod element side from a to the rod element end side, and a columnar columnar portion 1B further formed on the rod element side, and connected to the Homochi rod 2. It is configured to be possible.
The shaft core length L3 of the portion forming the contact inclined surface 1A is about three times the diameter of the maximum large diameter portion a, and the shaft core length L4 of the columnar portion 1B is two to three times that of L3. It is set to double the length.

On the other hand, the hollow Homochi rod 2 will be described. As shown in FIG. 2B, a receiving inclined surface 2B having a smaller diameter toward the inner side is formed in the rod tip opening of the Homochi rod 2, and the diameter is further reduced toward the inner side from the receiving inclined surface 2B. A hole-shaped cylindrical portion 2A is formed. The small-diameter hole-shaped cylindrical portion 2A is formed in a cylindrical shape having a substantially constant diameter.

The method of manufacturing the core body is as follows. Although not shown, a bundle of glass-reinforced fibers (500 to 1000) bundled along the axis is submerged in a thermosetting resin liquid, impregnated with the resin, and then pulled out from a die to a predetermined length. It is cut to form a solid rod-shaped member.
Here, carbon fiber or the like can be used as the reinforcing fiber, but glass fiber having a lower tensile elastic modulus and higher flexibility than carbon fiber or the like is adopted. As the tensile elastic modulus of the glass fiber used, 5 Ton / mm2 to 15 Ton / mm2 can be used.
The reason why the member used for the tip rod is shaped like a solid rod is that it needs to be configured so that the rod reacts sensitively when a fish is caught, and it is provided at the tip of the rod. This is because the solid rod shape is lighter than the hollow one and can be made smaller in diameter.

However, if the rigidity is too high, it may not be able to cope with sudden pulling of fish and may break or crack, so it is better to use glass fiber to maintain toughness.
The outer peripheral surface of the solid rod-shaped member formed as described above is ground into a conical shape in which the diameter gradually increases toward the rod base side, and the rod base end is ground to the rod base side. A contact inclined surface 1A having a smaller diameter and a columnar portion 1B having a constant diameter are formed on the rod base side thereof.

A method for manufacturing the hollow Homochi rod 2 will be described, but first, the shape of the mandrel 4 will be described. As shown in FIG. 3, a rod-shaped material is ground and hung from the tip side to the original side to form an outer peripheral surface thereof into a rod-shaped body whose diameter is increased at a constant rate.

The prepreg pattern on the side wound around the mandrel 4 will be described.
As shown in FIG. 3, the prepreg 5A configured by impregnating carbon fibers (glass fibers) c aligned in an attitude inclined at an angle θ with respect to the rod axis X with a thermosetting resin (thermoplastic resin) and the above. The prepreg 5B configured by impregnating the reinforcing fiber (glass fiber) c of the prepreg 5A and the reinforcing fiber (glass fiber) c symmetrically aligned and arranged across the rod axis X with a thermosetting resin (thermoplastic resin). Prepare a main pattern 5 having a length corresponding to the total length along the axis direction of the rod.

As the reinforcing fiber used for the hollow Homochi rod 2, a fiber having a tensile elastic modulus of 35 Ton / mm2 to 45 Ton / mm2 is selected. This tensile elastic modulus belongs to the high elastic system, and PAN-based carbon fiber, aramid fiber, boron fiber and the like can be used as the reinforcing fiber.
A hollow spike rod 2 is formed from the main pattern 5 formed as described above. As shown in FIG. 3, two prepregs 5A and 5B are superposed in a state where carbon fibers intersect each other and wound around a mandrel 4.

After winding the main pattern 5, although not shown, the tape is bound with polyester tape or the like, fired in a firing furnace, the tape is peeled off, and the tape is cut to a predetermined length. After cutting, it is processed into a predetermined outer surface shape with a centerless grinding machine or the like. That is, it is formed into a tubular body that is hung on the rod base side and gradually increases in diameter, and a predetermined paint, a fishing line guide 3 or the like is attached to form the Homochi rod 2.

As shown in FIG. 4A, a cylindrical portion 2A is formed on the inner peripheral surface of the Homochi rod 2 by the manufacturing method as described above, and the cylindrical portion 1B of the tip rod 1 is internally fitted. It is configured to be.
As shown in FIGS. 4A and 4B, an appropriate tool such as a drill D is used to form a connecting portion with the tip rod 1 at the stage of processing into a predetermined outer surface shape with a centerless polishing machine or the like. A receiving inclined surface 2B as an inclined inner peripheral surface whose diameter is reduced toward the rod base side is formed at the inlet of the cylindrical portion 2A.

As described above, a connecting portion between the tip rod 1 and the tip rod 2 is formed, and as shown in FIG. 2 (c), the contact inclined surface 1A and the columnar portion 1B of the tip rod 1 are formed with the tip rod 1. It is mounted in the receiving inclined surface 2B of the rod 2 and the cylindrical portion 2A. An adhesive is applied to the mounting surface to form an adhesive layer 6, and the tip rod 1 and the tip rod 2 are adhesively fixed. As shown in FIG. 2B, the adhesive is applied from the contact inclined surface 1A of the tip rod 1 to the columnar portion 1B.

The adhesive of the adhesive layer 6 is as follows.
A hot melt adhesive is a nonflammable adhesive containing a thermoplastic resin or rubber as a main component, and while being fluidized by melting by heating, it is cured when the temperature is lowered to adhere an object to be bonded. Examples of such an adhesive include HM-650-2 (manufactured by Cemedine Co., Ltd., trade name), Scotch-Weld3748 (manufactured by Sumitomo 3M Ltd., trade name, Scotch-Weld is a registered trademark), PES-111EE ( There is a product name) manufactured by Toa Synthetic Co., Ltd.
As a representative, specifications are described for Scotch-Weld3748.
(1) Principal component polypropylene (PP)
(2) Color Milky white (3) Adhesive time 45 seconds (4) Load heat resistant temperature 78 ℃
(5) Heat-resistant softening point 145 ° C
(6) Tension shear adhesion strength 2.4 MPa
(7) 180 ° C peeling adhesive strength 7.8 kN / m
Above: Source 3M Catalog

Next, the thread 7 to be tightened and fixed to the connecting portion hardened with the adhesive is wound. As shown in FIG. 5, the tightening thread 7 is wound from the outer peripheral surface of the tip rod 1 to the outer peripheral surface of the homochi rod 2. The yarn 7 used here is a non-twisted cotton yarn.

After winding with the thread 7, the clear coating agent 8 is sprayed and applied from above the thread 7. The execution range of the thread 7 is divided into the same lengths b and b along the rod axis direction centering on the maximum large diameter portion a which is the connection point between the tip rod 2 and the tip rod 1.
With the above configuration, the tip rod 1 and the tip rod 2 are formed as one rod.

Next, the structure of the tip rod 1 will be described in detail. As shown in FIGS. 2 and 5 to 7, the tip rod 1 is composed of a solid rod-shaped body as a core body and an outer layer 1D applied to the outer peripheral surface of the solid rod-shaped body.
As described above, the solid rod-shaped body is formed by pulling out a reinforcing fiber group formed by impregnating a glass reinforcing fiber group with a matrix resin such as an epoxy resin into a rod shape through a die. The drawn rod-shaped body is provided with a predetermined tapered surface or the like on the outer peripheral surface by a centerless grinding machine or the like, and as shown in FIGS. 2 and 6, the contact inclined surface 1A, the columnar portion 1B, and the conical rod-shaped body 1C are formed. It is formed in a tapered rod shape with.

The outer layer 1B will be described.
As shown in FIG. 6, a prepreg tape 13 for a narrow outer layer is formed by impregnating a reinforcing fiber such as carbon fiber aligned along the longitudinal direction with a thermosetting resin such as an epoxy resin as a matrix resin. Form. As shown in FIG. 6B, the prepreg tape 13 is spirally wound along the axial direction with respect to the outer peripheral surface of the conical rod-shaped body 1C in the solid rod-shaped body as the core body. In the spiral winding state, the adjacent spirals are wound apart from each other with the interval P1 set to 5 times the tape width t1 of the prepreg tape 13.
That is, specifically, the tape width t2 = 1 mm and the spiral spacing P1 = 5 mm.

As described above, regarding the specifications of the prepreg tape 13, the tape width t1 = 1 mm, the spiral spacing P1 = 5 mm, and the tape thickness is 0.1 mm to 0.01 mm, but the winding lead angles Θ1 to Θ3 are As the diameter of the conical rod-shaped body 1C becomes larger, the change is as follows. That is, as shown in the tables of FIGS. 7 (d) and 7 (e), the winding lead angle Θ1 = 32 ° at the diameter d1 = 1 mm of the tip small diameter portion of the solid rod-shaped core body, which is medium. The winding lead angle Θ1 = 62 ° at the diameter d2 = 3 mm of the middle portion of the solid rod-shaped core body, and the winding lead angle Θ1 = 75 at the diameter d3 = 6 mm of the original side portion of the solid rod-shaped core body. .1 °.
As shown in FIG. 7D, the winding lead angle Θ is measured with reference to the ridge line Y formed on the outer peripheral surface of the core body, but the ridge line Y with respect to the axis X of the core body. Since the inclination angle of is almost negligible, the description in the claims is based on the axis X.

As shown in FIG. 6 (c), when the inner prepreg tape 13A is wound to the original end, it circulates in the circumferential direction at the end portion and ends once. Then, again, from the small diameter portion side of the solid rod-shaped body, the outer prepreg tape 13B is further intersected with the inner prepreg tape 13A wound in advance and symmetrical with respect to the axis X. It is wound to form an X-winding spiral.
Therefore, when viewed from the direction orthogonal to the axis X, it can be seen that the inner prepreg tape 13A and the outer prepreg tape 13B intersect in an X shape. The winding lead angle Θ of the prepreg tape 13 is in the range of 35 ° to 75.1 ° with respect to the axis X. In this case, the inner and outer prepreg tapes 13A and 13B for the outer layer are the same prepreg tape.

Specifically, carbon fiber is used as the reinforcing fiber c constituting the prepreg tape 13 for the outer layer, but glass fiber, aramid fiber, alumina fiber and the like can be used in addition to the carbon fiber, and the resin is an epoxy resin. In addition, a thermosetting resin such as phenol resin and polyester resin and a thermoplastic resin such as PV (E) can be used.
The elastic modulus of the reinforcing fiber c is 20 to 40 tons / mm2, and medium and high elastic modulus reinforcing fibers are used. If the width of the prepreg tape is 1 mm and the thickness is 0.1 mm or less, it is desirable to take a value between 0.01 mm and 0.05 mm.

After winding the outer layer 1D, the entire length is covered with a resin tape such as polyester and fired in a firing furnace. After firing, the resin tape is peeled off, and a predetermined decorative treatment such as silver mirror painting is applied to finish the fishing rod.
In the above embodiment, in order to form the outer layer 1D, after the inner prepreg tape 13A for the outer layer is wound up to the hand end, and from the tip side to the hand side, the inner prepreg tape for the outer layer is formed. Although the method of winding the outer prepreg tape 13B for the outer layer from the top of the 13A to the hand end in an X shape is adopted, one prepreg tape 13 may be reciprocated.

With the above configuration, the following effects described above are obtained.
That is, the outer prepreg tape for the outer layer and the outer prepreg tape for the outer layer are spirally wound and crossed to form an X-shaped outer layer. As a result, the carbon reinforcing fibers arranged in the longitudinal direction of the prepreg tape of the outer layer are arranged in an inclined posture with respect to the axis line, and they are arranged so as to intersect in an X shape, so that the left and right sides are arranged. Regardless of the twisting action, these carbon reinforcing fibers exerted a counterforce, and it was possible to provide a tip rod having a high counterforce against the twist.

Moreover, what is wound around the outside of the solid rod as the outer layer is not a prepreg sheet, but a prepreg tape, and the prepreg tape is wound at intervals, so that it is located outside the solid rod. Compared to winding the prepreg sheet as the outer layer, it is possible to suppress the increase in rigidity and reduce the weight increase.

However, as will be described later, the generation of plasticity can be seen by simply winding the prepreg tape in a spiral shape with a spiral interval. Therefore, in this embodiment, the tape width t1 = 1 mm, which is reduced to 1/3, and the lead angle Θ wound around the core body is increased to adopt a configuration approaching a substantially right angle, thereby suppressing the generation of plasticity. I was able to. That is, in FIG. 6, the state in which the winding lead angle Θ at the large diameter portion d3 is set to 75.1 ° is presented, but if the large diameter portion d3 is smaller than 6 mm, the winding lead angle Θ also becomes smaller and the large diameter portion d3. If the portion d3 is larger than 6 mm, the winding lead angle Θ also becomes large. Therefore, in claim 1, the winding lead angle Θ that can be adopted by the present invention is set to an angle of 60 ° to 89 °.

[Comparative example]
Next, although a little touched on in the section of action and effect, here, a comparative example devised in the process of inventing the tip rod 1 of the present invention shown in FIGS. 6 and 7 will be described.
As shown in FIG. 8, the state in which the prepreg tape 14 is wound around the outer peripheral surface of the core body is the same. That is, the state in which the inner prepreg tape 14A and the outer prepreg tape 14B are spirally wound so as to intersect is the same. The only difference is that the width t2 of the prepreg tape 14 is 3 mm, and the spiral spacing P2 is also 15 mm.

When such a prepreg tape 14 is wound around the same core body, the winding lead angle Θ of the spiral is as follows.
That is, as shown in the table of FIG. 8 (e), the winding lead angle Θ4 = 11.8 ° at the diameter d1 = 1 mm of the tip small diameter portion of the solid rod-shaped core body, and the solid rod-shaped core. At the diameter d1 = 3 mm of the middle part of the body, the winding lead angle Θ5 = 32.1 °, and at the diameter d3 = 6 mm of the original side part of the solid rod-shaped core body, the winding lead angle Θ6 = 51.5. °.
As described above, in order to spirally wind the prepreg tape 14A or the like, which is wider than the prepreg tape used in the present invention, around the outer peripheral surface of the rod-shaped body without wrinkles, the angle with respect to the axis X becomes small. There is a tendency.

With such a configuration, the carbon reinforcing fibers arranged in the longitudinal direction of the prepreg tape of the outer layer are arranged in an inclined posture with respect to the axis X, and they are arranged so as to intersect in an X shape. Therefore, even if either the left or right twist acts, these carbon reinforcing fibers exert a counterforce, and it was possible to provide a tip rod having a high counterforce against the twist.

However, as described above, the generation of plasticity cannot be prevented, and as described in the above embodiment, the tape width t1 of the prepreg tape 13 is set to 1 mm, and the winding lead angle is set to an angle close to a right angle. As a result, it was suppressed that the torsional rigidity and the bending rigidity became too high, and the generation of plasticity was suppressed.

[Another Embodiment]
(1) The winding lead angle Θ of the inner and outer prepreg tapes 13A and 13B with respect to the core body is closely related to the outer diameter and the tape width in the large diameter portion on the original end side, and here, 75 shown in FIG. 6 (e). It is not limited to 1 °, and an angle between 60 ° and 89 ° may be adopted.
(2) The spiral spacing P is set to 5 times the tape width t, but the small diameter part is dense and the large diameter part is sparse, or conversely, the small diameter part is sparse and the large diameter part is dense. It can be used by changing it in various ways.
(3) As the fishing rod A, a rod composed of a plurality of rods is presented, but the present invention may be applied to a rod composed of one rod from the tip to the hand.

The present invention proposes a rod for catching a fish that is easy to catch, such as a delicate hit such as a swordtip squid.

1 Tip rod 1A Abutment inclined surface 1B Cylindrical part 1C Conical rod shape 1D Outer layer 2 Homochi rod 2A Cylindrical part 2B Receiving inclined surface 2D Rod tail end 3 Fishing line guide 4 Mandrel 5 Main pattern 5A, 5B Prepreg 6 Adhesive layer 7 Winding line 8 Clear paint layer 9 Blanks 10 Movable hood 11 Reel sheet 12 Rear grip 13, 14 Prepreg tape for outer layer (outer layer)
13A, 14A Inner prepreg tape for outer layer 13B, 14B Outer prepreg tape for outer layer A Ship rod B Rod tip rod C Original rod Ca Rod tip L1 Tip rod length L2 Jikushin length L3 Jikushin Length (contact slope)
L4 shaft core length (cylindrical part)
X rod axis Y ridge line a maximum large diameter part b distribution dimension c carbon reinforced fiber d1 to d3 winding diameter g glass reinforced fiber Θ tilt angle (carbon fiber)
Θ1 to Θ6 Winding lead angle t1, t2 Tape width P1, P2 Tape winding spiral spacing

Claims (2)

A tip rod having a core body and an outer layer located outside the core body.
The core body is a solid rod-shaped body made of a matrix resin impregnated with a group of glass reinforcing fibers aligned in a direction along an axis.
The core body is
A conical rod-shaped body that gradually increases in diameter from the small diameter part on the rod tip side to the large diameter part on the rod base side,
A contact inclined surface that is connected to the rod base side of the conical rod-shaped body and gradually decreases in diameter toward the rod base side.
A columnar columnar portion that is connected to the rod base side of the contact inclined surface and extends toward the rod base side, and a columnar portion.
Equipped with
The outer layer is
An inner prepreg tape for a narrow outer layer that aligns the reinforcing fibers along the longitudinal direction and is spirally wound along the axial direction with a constant spiral spacing in the axial direction.
An outer prepreg tape for a narrow outer layer that aligns the reinforcing fibers along the longitudinal direction and is spirally wound along the axial direction with a constant spiral spacing in the axial direction.
An X-rolled spiral body in which the inner prepreg tape and the reinforcing fibers of the outer prepreg tape are wound around the outside of the conical rod so as to intersect each other in the radial direction.
The inner prepreg tape and the outer prepreg tape have substantially the same width as the diameter of the small diameter portion of the conical rod-shaped body, and the spiral spacing is set to 4 to 6 times the width of the prepreg tape. A tip rod characterized by being wound around the outer peripheral surface of the conical rod-shaped body.
It is a fishing rod consisting of a tip rod and a hollow tip rod that is connected and fixed to the tip rod by a parallel joint method.
The tip rod is
A core body, which is a solid rod-shaped body made of matrix resin impregnated with a group of glass reinforcing fibers aligned in the direction along the axis, and
The outer layer located on the outside of the core body and
Consists of
The core body is
A conical rod-shaped body that gradually increases in diameter from the small diameter part on the rod tip side to the large diameter part on the rod base side,
A contact inclined surface that is connected to the rod base side of the conical rod-shaped body and gradually decreases in diameter toward the rod base side and abuts on the receiving inclined portion of the Homochi rod.
A cylindrical columnar portion that is connected to the rod base side of the contact inclined surface and extends toward the rod base side and is mounted in the cylindrical portion of the Homochi rod.
Equipped with
The outer layer is
An inner prepreg tape for a narrow outer layer that aligns the reinforcing fibers along the longitudinal direction and is spirally wound along the axial direction with a constant spiral spacing in the axial direction.
An outer prepreg tape for a narrow outer layer that aligns the reinforcing fibers along the longitudinal direction and is spirally wound along the axial direction with a constant spiral spacing in the axial direction.
An X-rolled spiral body in which the inner prepreg tape and the reinforcing fibers of the outer prepreg tape are wound around the outside of the conical rod so as to intersect each other in the radial direction.
The inner prepreg tape and the outer prepreg tape have substantially the same width as the diameter of the small diameter portion of the conical rod-shaped body, and the spiral spacing is set to 4 to 6 times the width of the prepreg tape. A fishing rod characterized in that it is wound around the outer peripheral surface of the conical rod-shaped body.

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