JP2003018947A - Interline rod - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an interline rod capable of keeping the strength of a fishing rod and favorably discharging water accumulated in the interior. SOLUTION: In this interline rod, a middle rod 3 is composed of a prepreg raw material in which a synthetic resin is impregnated in a reinforcing fiber and has a first layer 11 positioned on the innermost surface and orientating a reinforcing fiber in the circumferential direction, a second layer 12 laminated on the outside of the first layer 11 and orientating the reinforcing fiber in the axial direction, a third layer 13 laminated on the outside of the second layer 12 and orientating the reinforcing fiber in the circumferential direction and a forth layer 14 laminated in the outer periphery of a rod base side of the third layer 13 and orientating the reinforcing fiber in the axial direction. The thickness of the second layer 12 becomes thinner within a definite range from the end of the rod base side to which the forth layer 14 is laminated as the position of the layer 12 approaches the rod base side, and the forth layer 14 becomes thicker as the position of the layer 14 approaches the rod base side and the layer 14 forms an engaging male part 3a in which a definite range from the end of the rod base side is larger than other part. On the other hand, in the forth layer 14 forming the engaging male part 3a, a plurality of notches 15 are formed at intervals in the circumferential direction so that these depths do not attain the third layer 13.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fishing rod used for fishing, and more particularly to a fishing rod having a fishing line passage for inserting a fishing line inside a rod body. 2. Description of the Related Art Among conventional fishing rods, a fishing rod of a type called a through rod has a fishing line passage inside a rod body through which a fishing line from a reel can be inserted. This type of fishing rod has an introduction port for introducing fishing line into the rod body at the tip of a reel sheet for mounting a reel. And
The fishing line from the reel is inserted into the rod body from this introduction port, sequentially guided to the tip side, and led out from the tip side end. On the other hand, as a method of connecting a fishing rod formed by connecting a plurality of rod bodies, there is a fishing rod called a swing type. The connecting method of the swing-out type is a method in which a large-diameter rod body and a small-diameter rod body connected to the tip side of the large-diameter rod body so as to be accommodated in the large-diameter rod body are formed by fitting the inner circumference of the tip-side end part into a female. The small-diameter rod body has a structure in which the outer periphery of the rod-side end is fitted with a male part.
When fishing, each rod body is sequentially pulled out to the tip side, and the fitting male part and the fitting female part are fitted and fixed to each other and used as one rod body. On the other hand, at the time of storage, the rod body on the tip side is sequentially stored in the rod body on the rod base side to make it compact. [0004] One of the major problems with such a hollow rod is that water tends to accumulate. When the fishing line passes through the inside of the rod body, the fishing line is attached to the fishing line together with the fishing line thrown into the water, water is taken into the rod body, and water accumulates in the rod body. Therefore, recently, a process such as applying a water-repellent paint to the inner peripheral surface of the rod body is performed, and water accumulated inside the fishing rod by vigorously shaking the fishing rod is sequentially drained toward the tip side. Some ingenuity is given. However, among the hollow rods, in particular, when a plurality of rod bodies are connected in a swing-out form, in the connection portion of each rod body, the inner diameter of the rod body located on the tip side and the inner diameter located on the rod base side. It has been reported that the diameter difference of the slag serves as a barrier to hinder drainage. For this reason, there is a demand for the development of a fishing rod capable of smoothly draining water accumulated inside the rod body in consideration of such a difference in diameter of the connecting portion between the rod bodies. In this regard, it is conceivable to form a drainage hole or the like at the connecting portion between the rods. However, in a fishing rod for connecting a plurality of rods in a swinging manner, the connecting portion between the rods is This is a portion for supporting the rod body located on the tip side with the rod body at hand, and sufficient security is required. For this reason, holes and the like cannot be formed carelessly. It is an object of the present invention to provide a through rod that can easily drain water accumulated therein without deteriorating the strength of the rod body. A fishing rod according to a first aspect of the present invention is a hollow rod formed by connecting a plurality of rod bodies having a fishing line passage through which a fishing line can be inserted, in a swinging manner, and having a tapered taper. A large-diameter rod body with a mating female part with a smaller diameter than the other part on the inner circumference of the tip side, and a large-diameter rod body at the tip side of the large-diameter rod body. It is a connected tubular body having a tapered taper, and has a small-diameter rod body having a fitting male portion having a larger diameter than other portions in a certain range from the rod-side end. The small-diameter rod body is made of a prepreg material in which a reinforcing fiber is impregnated with a synthetic resin, and is laminated on a first layer located on the innermost surface and having the reinforcing fibers oriented in a circumferential direction, and laminated outside the first layer. A second layer in which the reinforcing fibers are oriented in the axial direction, a third layer in which the reinforcing fibers are oriented in the circumferential direction and laminated on the outer side of the second layer, and a shaft in which the third layer is laminated around the rod-side end of the third layer. And a fourth layer in which the reinforcing fibers are oriented in the direction. Here, the thickness of the second layer is thinner toward the rod side in a certain range from the rod end side end where the fourth layer is laminated. On the other hand, the fourth layer has a fitting male portion which is thicker on the rod side and a certain range from the end on the rod side is larger in diameter than other portions. In the fourth layer forming the fitting male portion, a plurality of cut grooves extend in the axial direction from the rod end side end to the tip side beyond the fitting range with the fitting female portion,
Further, the depth is formed at intervals in the circumferential direction so as not to reach the third layer. In this fishing rod, a small-diameter rod body is inserted into the large-diameter rod body during storage to make it compact. And at the time of extension, pull out the small diameter rod body from the large diameter rod body,
The fitting male part of the small-diameter rod body is fitted and fixed and connected to the fitting female part of the large-diameter rod body. And it will be used for fishing as one fishing rod. When the fitting male part and the fitting female part are fitted, the cut groove formed in the fitting male part provides a drain groove. If the rod is shaken during casting or the like, water accumulated in the large-diameter rod moves to the tip side with its momentum. Then, when water reaches the tip side portion of the large-diameter rod, the water is drained to the outside of the small-diameter rod through a groove in the male fitting portion of the small-diameter rod. The fitting male portion formed on the outer peripheral surface of the rod-side end portion of the small-diameter rod body has a fourth portion in which the reinforcing fibers are oriented in the axial direction.
Even if a cut is formed in the axial direction, the reinforcing fiber is not broken by the formation of the cut, and the strength of the reinforcing fiber hardly decreases. In the vicinity of the fitting male portion of the small-diameter rod body, the third layer is not damaged by the cut groove as described below, and the crushing strength of the rod body is sufficiently ensured. In the vicinity of the fitting male portion of the small-diameter rod body, the diameter of the second layer decreases toward the rod side, and instead, the diameter of the fourth layer increases toward the rod side on the outer peripheral side of the third layer. Even if various prepreg layers are formed and the cut grooves are formed in the fitting male portions, the cut grooves are difficult to reach the third layer. In other words, if various layers are laminated with a constant thickness in a rod body having a tapered taper, if a kerf is formed in the rod end side end portion in the axial direction, the kerf processing is performed on the axis of the rod body. Since it is apt to be performed in parallel to the direction, the depth of the kerf becomes deeper on the rod base side, and the kerf easily reaches the third layer. The third layer is an important layer for maintaining the crushing strength of the rod body in which the reinforcing fibers are oriented in the circumferential direction, and breakage of this portion significantly lowers the strength of the rod body. On the other hand, in this small-diameter rod body, the second layer is made thinner toward the base of the rod and the fourth layer is made thicker toward the base of the rod. Therefore, the third layer is hardly damaged even if a kerf is formed. The small-diameter rod body located on the tip side is supported by the large-diameter rod body located on the rod base side in the fitting male part, and the crushing strength of such a part should be sufficiently maintained. In this fishing rod, the crushing strength of such a portion is sufficiently maintained by the first layer and the third layer which is not damaged. An embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1 and FIG. 2, the center rod that employs the first embodiment of the present invention includes a base rod 1, a base upper rod 2 connected to the tip side of the base rod 1 in a swinging manner, and a base rod 2. Middle pole 3 connected to the tip side of upper pole 2 in the form of swing
And a spike (not shown). Each rod body is a tapered tubular body, and has a rod housing section 100 therein. As will be described in detail later, each of these rod bodies is a member obtained by firing a prepreg obtained by impregnating a reinforcing fiber such as a carbon fiber with a synthetic resin. A fitting male portion and a fitting female portion required for sequentially connecting the rods in a swinging manner are formed on each rod body. The inner peripheral surface of the rod base side end of the former rod 1 is formed with a screw thread to form a female screw part.
0 is detachably mounted. A reel sheet 4 on which a reel (not shown) can be detachably attached is provided on the peripheral surface of the original rod 1. Further, a fishing line introduction port 5 for introducing a fishing line from a reel into the inside of the rod body is formed on the tip end side peripheral surface of the former rod 1, and a fishing line introduction guide 6 is provided above the fishing line introduction port 5. Are located. A top guide 7 is connected to an end of the tip of the tip rod 4. Then, the fishing line from the reel 5 is guided by the fishing line introduction guide 7 and inserted into the inside of the rod body from the fishing line introduction port 6, and thereafter, is guided through the inside of each rod body to the rod body on the tip side sequentially, and It is led out from the guide 8 to the tip side. Next, regarding the structure of the connecting portion of each rod body,
The former pole 2 and the middle pole 3 will be described as an example. As shown in detail in FIGS. 2 to 4, the former upper rod 2 has a fitting female part 2 a whose diameter is smaller and thicker than the other part on the inner peripheral surface of the tip side end. This portion is a portion where auxiliary prepregs are separately laminated to partially increase the thickness. The inner rod 3 has a fitting male part 3a on the outer peripheral surface of the rod base end part, the diameter of which is partially larger and the wall thickness is thicker than other parts. The male fitting portion 3a is a portion fitted to the female fitting portion 2a. As shown in FIG. 3, the inner rod 3 is made of a prepreg material in which reinforcing fibers such as carbon fibers and glass fibers are impregnated with a thermosetting resin such as an epoxy resin. More specifically, a first layer 11 made of a prepreg material located on the innermost surface and having reinforcing fibers oriented in the circumferential direction, and a prepreg material laminated on the outside of the first layer 11 and having reinforcing fibers oriented in the axial direction. A second layer 12, a third layer 13 made of a prepreg material laminated on the outside of the second layer 12 and having reinforcing fibers oriented in the circumferential direction, and a shaft laminated on the outer periphery of the rod-side end of the third layer 13. It has a fourth layer 14 made of a prepreg material in which reinforcing fibers are oriented in directions. Although each layer is shown individually in FIG. 3, these prepreg layers are fired and integrated. A specific method of laminating each prepreg layer will be clarified in a method of manufacturing the inner rod 3 described later. The thickness of the second layer 12 becomes thinner toward the rod in a certain range from the rod end on which the fourth layer 14 is laminated. On the other hand, the fourth layer 14 is thicker toward the base of the rod. And by this fourth layer 14,
A fitting male portion 3a is formed in which a certain range from the rod end side has a larger diameter than other portions. As a result, as shown in FIG. 3, the second pole 12 is thinner and the fourth layer is thicker while the middle pole 3 is tapered so as to increase in diameter toward the pole end as a whole. As it reaches the side, the third layer is relatively stacked at a position deeper than the peripheral surface of the middle rod 3 (specifically, the peripheral surface of the fitting male portion 3a). Further, a cut groove 15 is formed in the fitting male portion 3a (the portion where the fourth layer 14 is laminated) so as to extend beyond the range of fitting from the rod base end to the fitting female portion and to the tip side. (See FIG. 2). The cut groove 15 is formed by shaving the peripheral surface of the middle rod 3 so that the deepest portion thereof is substantially parallel to the axial direction of the middle rod 3. The depth becomes deeper. However, this cut groove 15 is formed only in the range of the fourth layer 14 and does not reach the third layer 13. In addition, the kerf 15
The body itself is formed at a plurality of locations at intervals in the circumferential direction. Furthermore, a fishing line support protrusion 20 may be formed on the inner peripheral surface (innermost surface) of the first layer 11 of the inner rod 3. The fishing line support protrusion 20 is for reducing the contact area between the fishing line passing through the inside of the middle rod 3 and the inner peripheral surface of the rod, and can be formed by arranging a string-shaped prepreg in a spiral shape as described later. It is. In addition, such a structure of the fitting male part and the fitting female part is similarly formed in the connection part between other rod bodies. In this case, the kerf 15
The number of cuts is smaller at the tip side of the rod body. For example, the number of cut grooves formed in the fitting male portion of the tip rod 4 is about four places, and when the former is formed in the upper pole 2, about eight places are provided. It may be provided. Next, a method of manufacturing the inner pole 3 will be described. First, as shown in FIG. 5A, a mandrel (core material) 100 having a predetermined tapered taper is prepared, and a release agent is applied to the peripheral surface thereof as necessary. Then, the prepreg 31 for forming projections and the release tape 32 are spirally wound around the mandrel. The prepreg 31 for forming projections is a string-shaped material in which reinforcing fibers such as carbon fibers are twisted and impregnated with an epoxy resin or the like. This is spirally wound around the mandrel 100. Then, a peeling tape 32 is wound around the gap between the protrusion forming prepregs 31. As will be described later, the peeling tape 32 is peeled off, and only the projection forming prepreg 31 remains to form the fishing line support projection 20. Next, as shown in FIG. 5 (b), the first prepreg tape 4 is spirally formed on the outer periphery of each of the above-mentioned materials without any gap.
Wind one. The first prepreg tape 41 is a material in which reinforcing fibers such as carbon fibers are oriented in the length direction of the tape and impregnated with a synthetic resin. The first prepreg tape 41 forms the first layer 11 described above.
And the first prepreg tape 41 wound in this manner.
A main prepreg 42 is wound around the outer periphery of the main prepreg 42. The main prepreg 42 is a mandrel 1
This is a material in which reinforcing fibers such as carbon fibers are oriented in the axial direction of 00 and impregnated with a synthetic resin, and processed into a sheet. The main prepreg 42 has a substantially trapezoidal shape in which the winding width becomes larger toward the rod side in accordance with the taper of the mandrel 100, and is largely cut partially at the rod side, so that the winding width becomes smaller. Has been processed. In this manner, by cutting the rod-side portion of the main prepreg 42 large (particularly, by making the winding width gradually smaller toward the rod-side, the rod-side end is partially cut at the time of winding. (Particularly, the thickness gradually decreases toward the base of the rod). The main prepreg 42 forms the second layer 12. Thereafter, as shown in FIG. 5 (c), a second prepreg tape 43 is spirally wound around the main prepreg 42 without any gap. The second prepreg tape 43 is the same as the first prepreg tape 41 described above, and the reinforcing fibers are oriented in the longitudinal direction of the tape. The second prepreg tape 43 forms the third layer 13 described above. Further, as shown in FIG. 5D, an auxiliary prepreg 44 is provided at the rod-side end of the second prepreg 43 (in the range where the above-mentioned main prepreg 42 is particularly thinly wound). Is wound. This auxiliary prepreg 44
Is a material in which reinforcing fibers such as carbon fibers are oriented in the axial direction similarly to the main prepreg 42. The auxiliary prepreg 44 is wound so that the diameter of the main prepreg 42 is gradually increased toward the rod side while compensating for the reduced thickness of the main prepreg 42, and is gradually increased toward the rod side. The auxiliary prepreg 44 forms the above-described fourth layer 14 to the fitting male portion 3a. After winding each of these materials, a protective tape is wound around the outer periphery as necessary, and then fired in a furnace to integrate each material. Thereafter, the mandrel 100 is pulled out, the peeling tape 32 is peeled from the inner peripheral surface side, the protective tape is peeled from the outer peripheral surface side, cut to a required length, and the processing and diameter adjustment such as surface polishing are performed. Then, a cut groove is formed in the male fitting portion 3a. Here, the explanation is made by taking the center rod 3 as an example, but other rod bodies can be manufactured in the same manner. In such a through-hole rod formed by connecting the respective rod bodies, at the time of storage, the individual rod bodies are sequentially inserted into the respective rod bodies on the hand side from the ear tip rod 4 and stored to make a compact state. On the other hand, at the time of extension, it is sequentially pulled out from the tip rod 4 to the tip side, and the fitting male part of the rod side end of each rod body located on the tip side is fitted to the fitting female part of the rod body located on the pole side. And fixed and connected. And it will be used for fishing as one fishing rod. When the respective rod bodies are connected as described above, for example, as described in the middle rod 3 and the upper rod 2, as shown in FIG. 2, the fitting male part 3a and the fitting female part 2a are connected. At the time of fitting, the cut groove 15 formed in the fitting male portion 3a provides a drain groove. If this through rod is shaken during casting or the like, the water collected in the former upper rod 2 moves to the tip side with the momentum. Then, when water reaches the tip side of the former pole 2, the water does not hinder the movement to the tip side due to the difference in inner diameter between the former pole 2 and the middle pole 3, and the water of the fitting male portion 3 a The water is drained to the outside of the inner rod 3 through the incision 15. The same applies to the connecting portions between other rod bodies. Here, the fitting male portion 3a formed on the outer peripheral surface of the rod base end portion of the middle rod 3 is formed of a fourth layer 14 in which reinforcing fibers are oriented in the axial direction, and has a groove in the axial direction. Even if 15 is formed, the reinforcing fiber is not broken by the formation of the cut groove 15 and the strength is hardly reduced. The reinforcing fibers in the axial direction greatly contribute to the bending stiffness, and the formation of the cut grooves 15 can suppress the reduction in the bending stiffness of the rod body. In the vicinity of the fitting male portion 3a, as shown in FIG. 3, as shown in FIG. 3, the diameter of the second layer 12 decreases toward the base of the rod, and the fourth layer 14 replaces the third layer. Various prepreg layers are formed on the outer peripheral side of 13 in such a manner that the diameter increases toward the pole base. For this reason, even if the cut groove 15 is formed in the fitting male portion 3a (that is, the fourth layer 14), the cut groove 15
Does not reach the third layer 13 and the third layer 1
3 is less likely to be damaged. The third layer 13 is a layer in which the reinforcing fibers are oriented in the circumferential direction, and ensures the crushing strength of the rod body. The middle rod 3 is supported by the upper rod 2 at the fitting male portion 3a, and the crushing strength of such a portion should be sufficiently maintained. In this fishing rod, the crushing strength of such a portion is reduced by the first layer 11 and the third
It is well maintained by the layer 13. [Other Embodiments] (a) A hydrophilic paint may be applied in the kerfs. By applying such a hydrophilic paint, the drainage of water becomes smoother. (B) In the above embodiment, the number of rods to be connected is 4
Although this is a book, this setting is optional. Further, in the case where the fishing line introduction port is formed in the second rod body from the hand side in the through-hole rod, the drainage structure as described above is arranged on the tip side of the rod body formed with the fishing line introduction port. It suffices if it is adopted for each rod body to be done. According to the present invention, it is possible to easily drain water accumulated inside the rod body of the intermediate rod without reducing the strength of the rod body.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall view of a through rod adopting an embodiment of the present invention. FIG. 2 is a view showing the vicinity of a connecting portion between a former upper rod 2 and a middle rod 3 in the through rod of FIG. FIG. 3 is an enlarged cross-sectional view of a rod base end of the middle rod 3 of FIG. 1; FIG. 4 is a sectional view taken along the line IV-IV of the center rod 3 in FIG. 2; FIG. 5 is a diagram showing a manufacturing process of the middle pole 3 of FIG. [Explanation of Reference Codes] Binary upper rod 3 Middle rod 11 First layer 12 Second layer 13 Third layer 14 Fourth layer 15 Cut groove 31 Prepreg for forming projection 32 Peeling tape 41 First prepreg tape 42 Main prepreg 43 No. 2 prepreg tape 44 auxiliary prepreg

   ────────────────────────────────────────────────── ─── Continuation of front page    (72) Inventor Shohei Matsumoto             Osaka Prefecture Daito City Fukano Kita 1-14-47-305 (72) Inventor Yukinobu Shioya             Osaka Prefecture Sakai City Fukai Shimizu-cho 2090-4

Claims (1)

Claims: 1. A boring rod formed by connecting a plurality of rod bodies having a fishing line passage through which a fishing line can be inserted therein in a swinging-out manner, and comprising a tubular body having a tapered taper. A large-diameter rod body having a mating female part smaller in diameter than the other part on the inner periphery of the tip side end; And a small-diameter rod body having a fitting male portion having a larger diameter than the other portion in a certain range from the rod-side end portion, and the small-diameter rod body is synthesized with a reinforcing fiber. A first layer made of a prepreg material impregnated with a resin and located on the innermost surface and having reinforcing fibers oriented in the circumferential direction; and a second layer laminated on the outside of the first layer and having the reinforcing fibers oriented in the axial direction. And a third layer laminated on the outside of the second layer and having reinforcing fibers oriented in the circumferential direction,
A fourth layer laminated around the rod-side end of the third layer and having reinforcing fibers oriented in the axial direction, wherein the second layer is closer to the rod-side end where the fourth layer is laminated. In a certain range, the thickness of the fourth layer is made thinner toward the base of the rod, and the fourth layer is made thicker toward the base of the rod so that a certain range from the end of the base of the rod has a larger diameter than other parts. A male part is formed, and a cut groove is formed on the fourth layer forming the male fitting part so as to extend from the rod end side end to the tip side beyond the fitting range with the female fitting part. Are formed in a plurality of places at an interval in the circumferential direction so as to extend in the axial direction, and the depth does not reach the third layer.
fishing rod.