JPS5849105Y2 - fishing rod - Google Patents

Description

[Detailed description of the invention] The present invention relates to a fishing rod formed using high-strength fibers such as glass fiber, carbon fiber, and aramid fiber.
The purpose is to provide a fishing rod that has extremely high physical properties required for a fishing rod, namely, strength against bending in the longitudinal direction, strength against crushing in the radial direction, and strength against torsion, and is extremely light, yet has high strength and high elasticity.

Most of the fishing rods currently in use use glass prepreg, which is made by impregnating synthetic resin into a glass cloth woven with glass fibers at a constant ratio in the longitudinal and latitudinal directions, and the prepreg is shaped into a cylinder several times. It is formed by winding it into a shape.

However, as described above, fishing rods made of glass prepreg do not have sufficient physical properties, especially strength against bending in the longitudinal direction.

Therefore, in order to improve these physical properties, the number of turns of the prepreg can be increased or the amount of glass fiber used can be increased, but in this case the weight becomes very heavy.

Conventionally, in order to eliminate this problem, fishing rods have been formed by replacing some of the warp yarns in the glass cloth with carbon fibers, etc., which have higher strength and higher elasticity than glass fibers,
A fishing rod has been proposed in which a carbon fiber alignment sheet made of a large number of aligned carbon fibers is layered and wound on the prepreg, and the alignment sheet is formed into a sandwich inch shape.

However, according to these fishing rods, the bending strength in the longitudinal direction is increased compared to the glass fiber alone by introducing high tensile strength fibers such as the carbon fiber or other Kevlar fibers, and the rod can be made lighter in proportion to its strength. Among the physical properties, the crushing strength and torsional strength in the radial direction could not be increased, and there was a problem of vertical cracking or breakage.

However, this problem of vertical cracking and breakage can be solved by using a woven sheet, that is, a cloth made of warp and weft yarns, and increasing the number of weft yarns used for the warp yarns, without using an alignment sheet. However, if the number of weft yarns is increased beyond a certain level, the tension in the weft direction will increase and the repulsive force will act upon winding around the core bar, resulting in extremely poor workability, and there is a limit from the viewpoint of workability. Ta.

Moreover, even if the number of weft threads used is increased to the limit, the shape of the fishing rod is a so-called gently conical shape, with a large diameter at the hand and a gradually smaller diameter toward the tip. When the cloth is wound around a core metal, the wall thickness on the proximal side, that is, the large diameter side, is thinner than the wall thickness on the tip side, that is, the small diameter side, and the strength ratio of crushing and torsion strength is different. As a result, the above-mentioned vertical cracking and breakage phenomena still occur.

However, in order to fundamentally solve this problem, it would be possible to change the number of weft threads used depending on the diameter of the fishing rod and change the ratio of weft threads, but this is extremely difficult due to the weaving technology. Not only that, but the cost becomes extremely high.

It is also conceivable to change the weft ratio for each section in the joint rod, but this not only reduces the number of lofts and increases costs, but also creates complications in production management, so it is practically impossible to implement.

By the way, the reason why fishing rods are required to have torsional strength is that when fishing for fish, the fish may move forward, backward, left or right, diagonally, or diagonally with respect to the fishing rod.
The fishing rod runs in all directions including up and down, but for example, when a fish that was running forward and backward suddenly changes direction diagonally or left and right, an impactful torsional force is applied to the fishing rod, so if the rod has low strength against this torsion. In addition, if the torsional strength is low, especially if the fish that was running in the front and back direction with respect to the fishing rod suddenly changes direction and runs in the left and right direction,
Not only is it difficult to sense changes in the movement of the fish, but the speed at which changes in the movement of the fish are sensed is also slow.As a result, there is a delay in responding to the fish's movements, causing problems such as the fish getting stuck in the roots of rocks etc. It is.

Therefore, the present invention was devised in view of the above-mentioned problems, and a filament of long high-strength fibers is attached to the outer peripheral surface of the loft body, which is formed into a hollow shape using prepreg made of high-strength fibers and synthetic resin impregnated. Tape-shaped high-strength fiber yarns that are bundled and impregnated with a synthetic resin of the same type as the synthetic resin impregnated in the prepreg are twisted in a coarse pitch and continuously from one end of the loft body to the other end. The loft body and the high-strength fiber layer are integrally wound with the synthetic resin so that the high-strength fiber layer protrudes stepwise from the outer surface of the loft body. By joining, a constant bending strength in the longitudinal direction can be obtained, while the crushing and torsion strength in the warp direction can be made as strong as required for fishing rods.The number of weft threads used can be reduced and productivity can be improved. By reducing the amount of materials unnecessary for strength, it was possible to make it lightweight, strong, and inexpensive.

An embodiment of the fishing rod of the present invention will be described in detail below based on the drawings.

Reference numeral 1 denotes a hollow loft main body, and the loft main body 1 is formed by winding prepreg impregnated with a synthetic resin 13 such as polyester around a glass cloth woven with warp threads 11 and weft threads 12 at a constant ratio. be.

The material constituting the loft body 1 may be carbon cloth in addition to the above-mentioned glass cloth, or an aligned sheet made of aligned carbon fibers or Kevlar fibers may be superimposed on the glass cloth and wound together with the glass cloth. The material is not particularly limited.

Further, the ratio of the warp threads 11 to the weft threads 12 is 1:1.
The number of weft threads 12 may be increased to a known ratio or decreased from this known ratio.

Further, 2 is a material such as glass fiber, carbon fiber, Kevlar fiber, etc., which is wound around the outer circumferential surface of the loft body 1 constructed as described above, in a coarse pitch and continuously in a twill shape from one end of the loft body 1 to the other end. In the high-strength fiber layer, the fibers are made by bundling long monofilaments, and impregnating the bundled filaments with a synthetic resin such as polyester, that is, a synthetic resin of the same type as the synthetic resin impregnated in the prepreg, to form a tape. Then, the fiber layer 2 is formed by winding the tape-shaped high-strength fiber yarn in a cross-wrap using, for example, a winding machine.

Furthermore, the fiber layers 2 are not brought into close contact with each other but are spaced apart as shown in FIG. 1, and are formed at a coarse pitch, and the pitch P is preferably 3e to 20%/).

The pitch P may be made uniform over the entire length of the rod body 1, but it is preferable to change it in accordance with changes in the warp of the rod body 1.

That is, as shown in FIG. 1, the pitch P1 of the fiber layers 2 formed in the small diameter part of the rod body 1 is made coarser than the pitch P2 of the fiber layers 2 formed in the large diameter part, so that the pitch in the large diameter part It is preferable to make P2 dense.

Regarding this pitch sparse relationship, in the joint rod shown in FIG. 1, all the first sections A on the proximal side may have the pitch P2, that is, dense, and all the second sections B on the tip side may have the pitch P2, that is, coarse. However, other than Section A above
- The pitch may be made coarser or finer in the large diameter part and the small diameter part for each B.

Also, in the third section C of the tip of the joint rod shown in Figure 1,
Although the fiber layer 2 is not formed, it may be formed, or it may be formed only in one part, that is, in the large diameter part.

In addition, the fiber layer 2 is densely formed at the joint portion of the joint rod, regardless of the diameter.

Further, in FIG. 2, reference numeral 3 denotes an outer covering layer provided on the outer circumferential surface of the rod body 1 including the fiber layer 2, and is made of glass cloth prepreg or glass fiber aligned prepreg.

Although it is not particularly necessary to provide this outer coating layer 3, it becomes necessary when polishing is performed for finishing.

In the fishing rod of the present invention, the rod main body 1 and the high-strength fiber layer 2 constructed as described above are bonded together by the synthetic resin so that the high-strength fiber layer 2 protrudes stepwise from the outer surface of the rod main body 2. Since this high-strength fiber layer 2 is integrated with the rod body 1 in a cross-wound shape, the crushing strength and torsional strength in the radial direction are higher than that of the rod body 1.
It can be extremely large due to the cooperation with the weft threads 12 of the cloth constituting the rod body, and the number of weft threads 12 used can be reduced. The intensity ratio between direction and radial direction can be changed freely.

Next, to briefly explain the method of manufacturing the fishing rod of the present invention, as shown in FIG.
The fibers 7 are wrapped around the core metal 6, and then the tape-shaped fibers 7 described above are wrapped without firing the prepregs 4 and 5, that is, without curing the impregnated synthetic resin. Wrap it in a twill shape using a wrapping machine, then wrap cellophane tape 8 around the outer circumferential surface and tie it tightly, with or without wrapping the glass cloth prepreg that will become the outer covering layer 3,
The fiber layer 2 is integrally bonded to the outer peripheral surface of the prepreg 4, that is, the outer peripheral surface of the rod body 1 formed by the prepreg 4 and the prepreg 5, by heating and baking in a heating furnace.

Note that the method of winding the fibers 7 in a twill shape is to
is wrapped with prepregs 4 and 5, and is rotated together with the core bar 6 at a constant rotation speed, and the fiber I is held by a feeding device and moved along the axis of the core bar 6, The speed of this movement is controlled to achieve dense and dense winding.

Further, as this winding method, the rotation speed of the core metal 6 may be controlled and the feeding device may be moved at a constant speed.

As described above, according to the present invention, a tape-shaped high-strength fiber yarn made by bundling long high-strength fiber filaments and impregnated with a synthetic resin of the same type as the synthetic resin impregnated in the prepreg is attached to a rod. A high-strength fiber layer is formed by winding the outer circumference of the rod body in a loose pitch and continuously from one end of the rod body to the other end in a cross-wrap shape, and the rod body and the high-strength fiber layer are connected to each other. Since the high-strength fiber layer is integrally bonded by the synthetic resin so as to protrude stepwise from the outer surface of the rod body, when bending stress is applied to the rod body,
The bending stress can be dispersed throughout the high-strength fiber yarn in the high-strength fiber layer, and the bending stress can be countered by the entire high-strength fiber yarn, so that the bending stress of the entire rod body is made uniform by the high-strength fiber layer. Moreover, it is possible to reliably strengthen the rod body, give a natural warp to the rod body, and make the radial crushing strength and torsional strength necessary for the fishing rod sufficient and desired. The high-strength fiber yarn is formed into a tape by bundling particularly long high-strength fiber filaments and impregnating it with a synthetic resin of the same type as that used in the prepreg forming the rod body. Since the high-strength fiber layer made of strong fiber yarn and the rod body are integrally bonded by the synthetic resin, the bonding strength between the high-strength fiber layer and the rod body can be increased,
Even if bending stress is applied to the rod body, the high-strength fiber layer never peels off from the rod body,
Due to the cooperative action of the rod body and the high-strength fiber layer, the bending strength of the entire fishing rod can be sufficiently strengthened to a desired strength.

Furthermore, since the high-strength fiber yarn has a tape-like shape, the high-strength fiber yarn can be easily wound around the rod body, and the pitch of the cross-winding of the high-strength fiber yarn can be easily changed. By changing the above, the bending strength of the high-strength fiber layer can be freely changed.

Furthermore, unnecessary materials for strength can be reduced, so the overall weight can be reduced in proportion to its strength, and the cost can also be reduced.

Furthermore, since the high-strength fiber layer is twisted in a coarse pitch and protrudes stepwise from the outer surface of the rod body, the intersecting ridges of the high-strength fiber layer are Since it is clearly visible on the outer circumferential surface of the rod body, it can reliably prevent the hand gripping the fishing rod from slipping, and it also prevents a wet fishing line from coming into close contact with the fishing rod through water adhering to the fishing line. This close contact prevents the fishing line from not being fed out.

In addition, by integrally bonding the twilled high-strength fiber layer to the rod body, the torsional strength can be strengthened, which eliminates wobbling of the fishing line and allows for the proper amount of bending for a given bending load. This makes it easy to catch fish.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of the present invention, FIG. 2 is an enlarged partially cutaway view, and FIG. 3 is an explanatory diagram showing an example of a manufacturing method. 1...Rod body, 2...High strength fiber layer.

Claims (3)

[Scope of utility model registration request] (1) Filaments of long high-strength fibers are bundled on the outer circumferential surface of the rond main body, which is formed into a hollow shape by prepreg made of high-strength fibers and impregnated with synthetic resin, and the same type of synthetic resin as the synthetic resin impregnated into the prepreg is used. A tape-shaped high-strength fiber yarn impregnated with a synthetic resin of A fishing breast comprising a rond main body and a high-strength fiber layer integrally bonded by the synthetic resin so that the high-strength fibrous layer protrudes stepwise from the outer surface of the rond main body. (2) Utility Model Registration The fishing rod according to claim 1, characterized in that the pitch of the high-strength fiber layer is 3% to 20%. (3) Utility Model Registration Scope of Claim 1 In the fishing rod according to claim 1, the pitch of the high-strength fiber layer wound around the small diameter portion of the rond main body is coarser than the pitch of the high-strength fiber layer wound around the large diameter portion. A fishing rod characterized in that the pitch in the large diameter part is dense.