JP2004344139A - Joint structure of rod body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a joint structure rod bodies for directing a good curvature in the axial direction. <P>SOLUTION: The shaking-out type joint structure of the rod bodies is to join a small diameter rod body 1 to the ear side of a large diameter rod body 2 so as to be freely taken in and out. The small diameter rod body 1 has a main body part 1a and a fitting male part 1b continued to a rod butt side of the main body part 1a. The fitting male part 1b is tapered from the rod butt side in both inner diameter and outer diameter and the taper is steeper than that of the main body part 1a. The larger diameter rod body 2 has a main body part 2a and a fitting female body part 2b to which the fitting male part 1b can be fitted and extended to the ear side of the main body part 2a. The fitting female part 2b is tapered from the rod butt side in both inner diameter and outer diameter and the taper is steeper than that of the main body 2a. Further, the thickness (ΔX) of the main body part 2a of the larger diameter rod body 2 is thicker than the thickness (ΔZ) of the main body part 1a of the smaller diameter rod body 1, and the thickness (ΔY) of the fitting male part 1b of the smaller rod body 1 is thicker than the thickness (ΔZ) of the main body part 1a of the smaller rod body 1. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a connecting structure of rods constituting a fishing rod, and more particularly, to a connecting structure of rods called a swing type.
[0002]
[Prior art]
In recent years, many fishing rods are provided with a plurality of rods which are cylindrical bodies having a tapered taper, and these rods are connected to form one fishing rod. As a method of connecting such rods, there is a method called a “drawing form”. In this swing type, the small-diameter rod body located on the tip side is sequentially housed inside the large-diameter rod body located on the pole base side, and when the small-diameter rod body is pulled out to the tip side, the small-diameter rod body is pulled out. (See, for example, Patent Document 1).
[0003]
In the portion where such rods fit each other, as shown in FIG. 5, the outer diameter of the rod-side end of the small-diameter rod 51 is increased to increase the inner circumference of the tip end of the large-diameter rod 50. In general, another material 52 is laminated on the outer periphery of the rod-side end portion of the small-diameter rod body 51 so that it can be fitted to the surface.
[0004]
[Patent Document 1]
JP-A-11-075634
[Problems to be solved by the invention]
However, when another material 52 is laminated on the small-diameter rod body 51 as described above, the bending rigidity in this portion in the axial direction becomes particularly large as compared with other portions. That is, when the rod bodies are connected to each other, the large-diameter rod body 50 and the small-diameter rod body 51 are doubly present in the above-described fitting portion, and the fitting portion is different from the other portions alone. Has an increased bending rigidity in the axial direction. Further, if another material 52 is laminated on the small-diameter rod body 51, the increase in bending rigidity in the axial direction is further increased. Such a partial change in bending stiffness in the axial direction of the fishing rod hinders the gentle bending of the entire fishing rod.
[0006]
An object of the present invention is to provide a connection structure between rod bodies that can produce a good bend.
[0007]
[Means for Solving the Problems]
The connecting structure according to the present invention is a connecting structure of a rod body when a small-diameter rod body is connected to a tip side of a large-diameter rod body in a swingable manner so as to be able to be taken in and out. The small-diameter rod body has a main body portion and a fitting male portion that is continuous on the rod base side of the main body portion, and the fitting male portion is tapered so that both the inner diameter and the outer diameter increase with the rod base side. The taper is sharper than the main body. The large-diameter rod body has a main body and a mating female part to which a mating male part continuous with the tip of the main body can be fitted. And the taper is sharper than the main body. The thickness of the main body of the large-diameter rod is greater than the thickness of the main body of the small-diameter rod, and the thickness of the male fitting portion of the small-diameter rod is greater than the thickness of the main body of the small-diameter rod.
[0008]
Here, the small-diameter rod and the large-diameter rod are connected to each other by pulling out the small-diameter rod toward the tip of the large-diameter rod and fitting the fitted female portion to the fitted male portion. Both the mating male portion and the mating female portion are tapered so that both the inner diameter and the outer diameter increase toward the base of the rod. The fitting female portion is not thickened, and the change in bending rigidity in the axial direction between the fitting male portion and the fitting female portion with respect to the main body portion is small.
[0009]
In addition, the thickness of the main body portion of the large-diameter rod body to be located on the rod base side is larger than the thickness of the main body portion of the small-diameter rod body, and the main body portion of the large-diameter rod body and the main body of the small-diameter rod body are combined. In comparison, the rigidity of the large-diameter rod is greater than the axial bending rigidity of the small-diameter rod. The small-diameter rod body located on the tip side has a lower bending rigidity in the axial direction than the large-diameter rod body, and it is easy to produce a natural fishing rod that bends more gradually toward the tip side.
[0010]
The thickness of the fitting male part of the small-diameter rod is set to be thicker than the thickness of the main body of the small-diameter rod, and the connection between the small-diameter rod and the large-diameter rod is likely to concentrate large loads. Is suppressed.
In another connection structure, the main body of the small-diameter rod is made of a first material in which carbon fiber is impregnated with a synthetic resin, and the fitting male portion of the small-diameter rod is formed on the outer periphery of the first material and the first material. And a laminated second material. The thickness of the first material of the fitting male portion is smaller than the thickness of the first material of the main body.
[0011]
The first material that is a material for forming the rod body preferably includes, for example, a material in which carbon fibers are aligned in the axial direction and impregnated with a synthetic resin (referred to as “axial fiber reinforced resin”). . In this way, the carbon fibers in the axial direction suppress breakage due to the axial bending of the rod body. If such a first material is disposed on the fitting male part in the same manner as the main body part, the axial fiber-reinforced resin of the large-diameter rod body and the small-diameter rod are formed in a portion where the fitting male part and the fitting female part overlap. Due to the overlap of the body with the axial fiber reinforced resin, the bending rigidity in the axial direction becomes excessive at the portion where the fitting male part and the fitting female part overlap.
[0012]
In this small-diameter rod body, the thickness of the first material is thinner in the fitting male portion than in the main body portion. For example, as the second material, carbon fibers or glass fibers are aligned in the circumferential direction. By using a material impregnated with synthetic resin, the bending rigidity in the axial direction of the fitting male portion of the small-diameter rod is reduced as compared with the main body of the small-diameter rod.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
[First Embodiment]
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the small-diameter rod 1 and the large-diameter rod 2 that employ the first embodiment of the present invention are configured such that the small-diameter rod 1 can freely move in and out of the tip of the large-diameter rod 2, that is, They are connected in a so-called draw style. The large-diameter rod body 2 and the small-diameter rod body 1 are part of a rod body constituting a fishing rod. For example, the large-diameter rod body 2 is a former rod located closest to the fishing rod, and the small-diameter rod body 1 is This is the former pole connected to the tip of the former pole. Alternatively, the large-diameter rod body 2 may be a former rod, and the small-diameter rod body 1 may be a middle rod connected to the tip side of the former rod. Members such as a reel sheet, a fishing line guide, and a grip are mounted on the peripheral surface of the large-diameter rod body 2 and the small-diameter rod body 1 as necessary. The large-diameter rod body 2 and the small-diameter rod body 1 are tapered cylindrical members each made of a prepreg material in which carbon fiber or glass fiber is impregnated with a synthetic resin.
[0014]
As shown in FIGS. 2 and 3, the large-diameter rod body 2 can be divided into two parts, a main body 2a and a fitting female part 2b formed on the tip side of the main body 2a. The main body 2a is a cylindrical portion having a tapered shape (for example, a taper of about 1/1000 to 2/1000). The small diameter rod body 1 is inserted into the main body 2a from the tip side.
The fitting female portion 2b is a cylindrical portion that is continuous with the tip of the main body 2a, and has a sharp taper compared to the main body 2a (for example, about 2/1000 to 4/1000). Taper). Both the inner and outer diameters of the fitted female portion 2b are tapered, and the thickness of the fitting female portion 2b is substantially the same at the tip end and the rod end. The small-diameter rod body 1 described later fits on the inner peripheral surface.
[0015]
The large-diameter rod body 2a having such two portions can be manufactured, for example, by winding a carbon fiber reinforced resin or the like around a core material having a predetermined two-stage taper and firing it.
One small diameter rod body 1 can also be divided into two parts, a main body part 1a and a fitting male part 1b formed on the rod base side. The main body portion 1a is a cylindrical portion having a tapered shape (for example, a taper of about 1/1000 to 2/1000). When another rod body is connected to the tip side of the small-diameter rod body 1 in a swing-out manner, another rod body is inserted into the main body 1a from the tip side.
[0016]
The fitting male portion 1b is a cylindrical portion that is continuous with the rod side of the main body 1a, and has a sharper taper than the main body 1a (for example, 2/1000 to 4/1000). Degree taper). Both the inner and outer diameters of the fitting male portion 1b are tapered, and the thickness of the fitting male portion 1a is substantially the same at the tip end and the rod end. When the small-diameter rod body 1 is pulled out to the tip side of the large-diameter rod body 2, the fitting male part 1 b and the fitting female part 2 b are fitted so that the large-diameter rod body 2 fits on the outer peripheral surface thereof. And the diameter has been adjusted.
[0017]
As shown in detail in FIG. 3, the small-diameter rod body 1 and the large-diameter rod body 2 have a main body 1a of the large-diameter rod body 2 due to the thickness (ΔZ) of the main body 1a of the small-diameter rod body 1. The thickness (ΔX) of the portion 2a is increased. The thickness (ΔY) of the male fitting portion 1b of the small-diameter rod 1 is larger than the thickness (ΔZ) of the main body 1a of the small-diameter rod 1.
In such a small-diameter rod body 1 and a large-diameter rod body 2, the small-diameter rod body 1 is stored inside the large-diameter rod body 2 at the time of storage. At the time of use, the small-diameter rod 1 and the large-diameter rod 2 are mutually pulled out by pulling the small-diameter rod 1 toward the tip of the large-diameter rod 2 and fitting the fitted female portion 2b to the fitted male portion 1b. Are linked (see FIG. 2). The fitting male portion 1b and the fitting female portion 2b are both tapered so that both the inner diameter and the outer diameter increase toward the base of the rod, and in each rod body, compared to the respective main bodies 1a, 2a. Therefore, the change in bending rigidity in the axial direction is small. Therefore, the bending rigidity in the axial direction is less likely to be unduly damaged at the fitting portion between the fitting male portion 1b and the fitting female portion 2b.
[0018]
In addition, the thickness (ΔX) of the main body portion 2a of the large diameter rod body 2 located on the rod base side is larger than the thickness (ΔZ) of the main body portion 1a of the small diameter rod body 1, and When the main body 2a is compared with the main body 1a of the small-diameter rod 1, the bending rigidity of the large-diameter rod 2 is larger than the bending rigidity of the small-diameter rod 1 in the axial direction. By setting such a thickness, the bending rigidity in the axial direction of the small-diameter rod body 1 located on the tip side is lower than that of the large-diameter rod body 2, and the natural bending of the fishing rod that bends more gradually toward the tip side. It becomes easy to direct.
[0019]
Further, the thickness (ΔY) of the fitting male portion 1b of the small-diameter rod body 1 is set to be larger than the thickness (ΔZ) of the main body portion 1a of the small-diameter rod body 1, so that a large load is easily concentrated on the small-diameter rod body 1. Breakage of the connecting portion between the rod and the large-diameter rod body 2 is prevented.
[Second embodiment]
FIG. 4 shows a modification of the first embodiment as a second embodiment.
[0020]
Also in this embodiment, the small-diameter rod 11 is connected to the tip side of the large-diameter rod 12 in a swinging-out manner.
As in the first embodiment, the large diameter rod body 12 can be divided into two parts, a main body part 12a and a fitting female part 12b formed on the tip side of the main body part 12a. The taper and the like are the same as in the first embodiment. The main body 12a of such a large diameter rod body 12 is formed of an axial prepreg in which carbon fibers are aligned and oriented in the axial direction and impregnated with a synthetic resin. For example, the main body 12a is formed by stacking a plurality of axial prepregs, firing and integrating them. As the outermost layer and the innermost layer, a prepreg tape cut into a tape shape may be spirally wound. When such a prepreg tape is used, the carbon fibers are oriented from the circumferential direction to the spiral direction at the outermost and innermost portions of the main body portion 12a.
[0021]
Similarly to the first embodiment, the small-diameter rod body 11 can be divided into two parts, a main body part 11a and a fitting male part 11b formed on the rod base side of the main body part 11a. The main body 11a is formed of an axial prepreg, similarly to the main body 12a of the large diameter rod body 12. On the other hand, the fitting male part 11b also includes the axial prepreg, but has a smaller content of the axial prepreg (the thickness of the axial prepreg is smaller) than the main body part 11a. In the fitting male portion 11b, an auxiliary prepreg 30 is laminated on the outer periphery of the axial prepreg to compensate for the loss of the axial prepreg. The auxiliary prepreg 30 is obtained by aligning carbon fibers or glass fibers in the circumferential direction of the small diameter rod body 11 or in a direction having a certain angle from the circumferential direction, and impregnating with synthetic resin. Preferably, in the fitting male part 11b, the thickness of the prepreg in the axial direction is set to about half of the thickness of the main body part 11a.
[0022]
As described above, the fitting male portion 11b of the small-diameter rod body 11 is formed by laminating the axial prepreg and the auxiliary prepreg 30. Both the inner diameter and the outer diameter of the small-diameter rod body 11 are tapered such that the diameter increases toward the rod base side. It is. The wall thickness of the fitting male portion 11b is substantially constant from the tip side to the rod base side.
Note that other matters such as the relationship between the thickness of the main body 11a of the small-diameter rod 11, the male fitting part 11b, and the thickness of the main body 12a of the large-diameter rod 12 are the same as in the first embodiment.
[0023]
In such a large-diameter rod body 12 and a small-diameter rod body 11, the same operation and effects as those of the first embodiment can be obtained. Further, the bending rigidity in the axial direction of the male fitting portion 11b of the small diameter rod 11 can be set smaller than that of the main body 11a of the small diameter rod 11. Therefore, when the small-diameter rod body 11 and the large-diameter rod body 12 are pulled out to the tip side, excessive bending rigidity is partially increased in the part of the fitting male part 11b and the fitting female part 11a. Can be suppressed.
[0024]
In the second embodiment, the auxiliary prepreg 30 is arranged only on the male fitting portion 11b of the small-diameter rod 11, but the auxiliary prepreg 30 is also provided on the inner peripheral surface side of the female fitting 12b of the large-diameter rod 12. The auxiliary prepreg 30 may be arranged at the bottom.
[0025]
【The invention's effect】
If the connecting structure of the present invention is adopted, good bending can be produced even at the connecting portion between the rod bodies.
[Brief description of the drawings]
FIG. 1 is a diagram showing a large-diameter rod body 2 and a small-diameter rod body 1 employing a first embodiment of the present invention.
FIG. 2 is a view showing a connection portion between a large-diameter rod body 2 and a small-diameter rod body 1 in FIG. 1;
FIG. 3 is an enlarged view of FIG. 2;
FIG. 4 is a view corresponding to FIG. 3 of a large-diameter rod body 12 and a small-diameter rod body 11 employing a second embodiment of the present invention.
FIG. 5 is a view showing a connecting portion between rod bodies of a conventional fishing rod.
[Explanation of symbols]
1,11 Small diameter rod body 2,12 Large diameter rod body 1b, 11b Fitting male part 2b, 12b Fitting female part

Claims (2)

The connecting structure of the rod body when connecting the small-diameter rod body to the tip side of the large-diameter rod body in a freely swingable manner,
The small-diameter rod body has a main body portion and a fitting male portion that is continuous with the rod side of the main body portion, and the fitting male portion has an inner diameter and an outer diameter that are tapered so that the diameter increases toward the rod side. And the taper is a steep taper compared to the main body,
The large-diameter rod body has a main body portion and a female fitting portion to which the male fitting portion continuous with the tip side of the main body portion can be fitted. A taper whose diameter increases toward the side is given, and the taper is a steep taper as compared with the main body,
The thickness of the main body of the large-diameter rod is greater than the thickness of the main body of the small-diameter rod, and the thickness of the male fitting portion of the small-diameter rod is greater than the thickness of the main body of the small-diameter rod. , Rod body connection structure. The main body of the small-diameter rod is made of a first material in which carbon fiber is impregnated with a synthetic resin, and a fitting male portion of the small-diameter rod is laminated on the outer periphery of the first material and the first material. And a second material,
The connecting structure of the rod body according to claim 1, wherein the thickness of the first material of the fitting male portion is smaller than the thickness of the first material of the main body portion.

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