JP2004105125A - Fishing rod for sweetfish - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fishing rod for sweetfishes capable of reducing influence upon a sweetfish for decoy based on swinging of the rod in fishing and facilitating operation for removing the sweetfish from a terminal tackle or exchanging the sweetfish. <P>SOLUTION: In the fishing rod for sweetfishes, a top rod connects a solid body on the front side of a tubular body and the length of the top rod is ≤ approximately 10% of the maximum length of a joint type fishing rod for sweetfishes and a fishline is bound to a rod top. When the top of the top rod is defined as A and a maximum diameter of the solid body is defined as B and the top of top rod-supporting rod is defined as C, a ratio [EI(A):EI(B):EI(C)] of flexural rigidity EI of respective parts A, B and C is 1: (3-18):(100-200). <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a sweetfish pole.
[0002]
[Prior art]
Ayu rods are generally long, generally about 8 to 10 m. The number of joints is generally 7 or more. When fishing, fishing is performed by binding a fishing line to this rod tip. The length of the fishing line to the tip of the device is equal to or slightly longer than the entire length of the fishing rod.
[0003]
[Problems to be solved by the invention]
In a conventional sweetfish rod, if the holding part held by hand shakes while waiting for the sweetfish to catch in fishing, the rod tip generally swings greatly. The swing of the tip rod extends to the decoy sweetfish via the fishing line, and the decoy sweetfish is pulled and weakened by the swinging motion of the rod tip. In addition, the length of the fishing line is slightly longer than the entire length of the rod in the work of taking in the caught ayu and removing it from the gimmick or replacing the decoy ayu, so it is necessary to loosen the fishing line during this work. Attempts to pull the fishing line by pulling on the binding part of. However, the fishing line is stretched by the rigid resistance of the tip rod at that time, and the removal work becomes difficult. If it is pulled more strongly, depending on the amount of pulling at that time, an excessive bending of the spike occurs, which may be damaged.
Therefore, an object of the present invention is to provide a sweetfish rod that can reduce the influence on the decoy sweetfish due to the shaking of the rod in fishing and can easily remove or replace the sweetfish from the device.
[0004]
[Means for Solving the Problems]
In view of the above object, in claim 1 of the present invention, the tip rod is formed by connecting a solid body to the front side of the tubular body, and the length of the tip rod is about 10% of the maximum length of the joint type ayu rod. The bending rigidity ratio of each part of a sweetfish rod of the type that binds a fishing line, where the tip of the tip of the tip is A, the maximum diameter of the solid body is B, and the tip of the tip of the rod is C A: The sweetfish rod is provided, wherein A: B: C is 1: (3-18) :( 100-200). The bending rigidity of the portion C is the bending rigidity of the ear rod itself.
The invention according to claim 1 relates to a type of sweetfish rod in which a solid body is connected to a head rod. The bending stiffness is 0.005 to 0.01 at the tip A of the tip of the ear rod when the tip C of the tip of the ear is expressed as the reference 1. Is approximately 1/10, which is about 1/10 to 1/5 of the bending stiffness of the tip A of the tip of a conventional conventional rod, and has a considerably soft configuration. For this reason, even if the rod holding part swings during fishing, the bending rigidity of the head rod reaching the binding part of the head rod is small (soft), so that the influence of the pulling force of the fishing line on the decoy sweetfish can be reduced (the rod tip is Large swing is prevented). In addition, since the length of the head rod is about 10% or less of the entire length of the sweetfish rod, if the length and bending rigidity of each rod pipe from the ear rod to the original rod are set in the same manner as the conventional one, The operability of the entire rod is hardly affected, and the operability as before can be secured.
[0005]
Claim 2 is a type of ayu rod, wherein the tip rod is a tubular body, the length of the tip rod is about 10% or less of the maximum length of the joint type ayu rod, and a fishing line is bound, When the tip of the tip of the tip is A, the half of the tip of the tip is D, and the tip of the tip is C, the bending stiffness ratio A: D: C of each part is 1: (10-18). : (40-80) is provided.
The invention according to claim 2 relates to a sweetfish rod in which the tip is a tubular body. Although the value of the bending stiffness ratio is different, the operation and effect itself are the same as in the first embodiment.
[0006]
In claim 3, the bending stiffness of the A, B, and C portions is 400 to 800 kg · mm ² (3920 to 7840 N · mm ² ), 1200 to 14400 kg · mm ² (11760 to 141120 N · mm ² ), and 40000, respectively. The sweetfish rod according to claim 1, which is selected so as to be within the range of the flexural rigidity ratio from the range of １６０160000 kg · mm ² (392000 to 1568000 N · mm ² ).
The operation and effect are the same as those of the first aspect.
[0007]
According to claim 4, wherein A, D, the bending rigidity of the C portion, ^{respectively, 1000~2000kg · mm 2 (9800~19600N ·} mm 2), 10000~36000kg · mm 2 (98000~352800N · mm 2), 40000 The sweetfish rod according to claim 2, which is selected so as to be within the range of the flexural rigidity ratio from the range of １６０160000 kg · mm ² (392000 to 1568000 N · mm ² ).
The function and effect are the same as those of the second aspect.
[0008]
According to a fifth aspect of the present invention, there is provided the sweetfish rod according to the first or third aspect, wherein the length of the exposed portion of the solid body is equal to or less than half of the total length of the tip rod.
In order to prevent weight holding, it is significant to make the length of the solid body as short as possible and make the exposed portion less than half of the total length of the spikestick. In addition, by making the length shorter, the thickness of the connecting portion with the rear end of the tubular body can be made thinner, so that the front end of the tubular body is prevented from being torn. Furthermore, since the solid body is more expensive than the tubular body, shortening it contributes to a reduction in the cost of the sweetfish rod.
[0009]
According to a sixth aspect, there is provided the sweetfish rod according to any one of the first to fifth aspects, which has a length adjusting mechanism capable of adjusting the length at hand.
Ayu rods with a length adjustment function usually adjust the length to the longest length and send out the decoy sweetfish and pull in to take in the catching prey sweetfish. However, when removing the prey ayu from the gimmick or when changing the decoy ayu, we want to make the fishing line slack and work. In such a case, the length of the rod is shortened by the length adjusting mechanism, but this operation is also somewhat troublesome. However, if the tip rod is soft as in the present application, there is no need to perform such length adjustment, and work can be performed quickly.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in more detail based on embodiments shown in the accompanying drawings.
FIG. 1 is a side view of a sweetfish rod according to the present invention, and FIG. 2 is a schematic enlarged view of a tip portion thereof. It is an eight-piece connecting rod consisting of the original rod 10, the middle rods 12, 14, 16, 18, 20, a holding rod 22, and a head rod 24. The splicing method is a swing type, but may be a parallel splicing method. Each rod is a rod made of a fiber-reinforced synthetic resin reinforced with a reinforcing fiber such as carbon fiber using a synthetic resin such as an epoxy resin as a matrix.
[0011]
The maximum total length L of the spliced rods is 9 m, and the length L1 of the exposed region of the tip rod 24 is 710 mm. Therefore, L1 / L (× 100) = 7.9%. Although there are exceptions, generally, the length A of the sweetfish rod is generally about 8 to 10 m, and the number of joints is about 7 to 9 pieces. Further, the exposed length L1 of the tip rod is generally in the range of about 600 to 900 mm. Therefore, the range is about 6% ≦ L1 / L ≦ 11%, but about 7% ≦ L1 / L ≦ 10% is more general. Therefore, when only the tip rod is formed particularly flexibly, the influence on the rigidity balance of the whole ayu rod is small.
[0012]
In the case of this embodiment, the tip rod 24 is composed of a so-called solid solid part 24A formed of a so-called solid body, and a tip-shaped tubular part 24B of a tubular body obtained by joining and integrating the tip part to the tip. . The exposed portion length SL of the tip solid portion 24A is 350 mm. The total length L0 of the tip rod 24 is 740 mm, SL / L0 (× 100) = 47%, which is less than half. The exposed length L2 of the ear rod 22 in this example is 910 mm.
[0013]
FIG. 3A shows the tip solid portion 24A, and the rear end region is a connection portion with the tip tubular portion 24B described in FIG. 3B. The tip solid portion 24A is oriented in the axial direction with carbon fibers having an elastic modulus of 9860 kg / mm ² (96628 N / mm ² ) as reinforcing fibers. The matrix resin is an epoxy resin, and all other members also use the epoxy resin. The resin weight ratio of the tip solid portion 24A is 40%. The outer diameter (diameter) at the front end portion A is 1.0 mm, and that at the rearmost position portion B of the exposed region which is the maximum diameter portion is 1.9 mm, which is a tapered front shape.
[0014]
Reference numeral 30 in (b) denotes a mandrel. Each prepreg in this figure forms the tip tubular portion 24B, but is shown differently from the actual dimensional ratio. In the drawing, the dimension in the vertical direction is enlarged by about 5 times the dimension in the left-right direction (axial length direction), but otherwise, it is generally drawn correctly. The prepregs 22A and 22B are respectively wound so that carbon fibers having an elastic modulus of 30000 kg / mm ² (294000 N / mm ² ) are oriented in the axial direction of the mandrel. The prepreg 22B is lined with a scrim on the back side. A prepreg 22C in which carbon fibers having the same elastic modulus as the above-described elastic modulus are directed in the axial direction is wound around the rear region (hand side), and the glass fibers are directed circumferentially in the front region. The prepreg 22D oriented as described above is wound.
[0015]
Further, a short prepreg 22E in which carbon fibers having an elastic modulus of 24000 kg / mm ² (235200 N / mm ² ) are directed crosswise in the axial direction and the circumferential direction is wound around the region near the rear end. The prepreg 22D is for preventing tearing when the solid tip portion 24A is connected. Instead of this, for example, carbon fibers having an elastic modulus of 24000 kg / mm ² (235200 N / mm ² ) are each about 45 degrees. A so-called bias sheet that intersects with the inclination direction may be used. The tubular material thus wound is subjected to a heat curing treatment. The resin weight ratios of the prepregs 22A, 22B, 22C, 22D, and 22E are 38%, 38%, 39%, 47%, and 40%, respectively.
[0016]
FIG. 4 shows the bending rigidity EI (the vertical axis EI is logarithmically displayed) in the area (L1 + L2) between the ear rod 22 and the head rod 24. The bending stiffness line of the ear rod 22 is shown by a solid line 22 ', and the bending stiffness line of the tip rod 24 according to the present invention is shown by broken lines 24B' and 24A '. Line 25 is a typical conventional spike rod bending stiffness line. The bending rigidity value EI (C) of the rod end of the rod end C is 81400 kg · mm ² (797720 N · mm ² ), and the bending rigidity value EI (A) of the rod end A of the rod end 24 is 484 kg · mm. ² (4743 N · mm ² ). On the other hand, the bending rigidity value EI (A) ′ of the tip of the conventional tip rod is 3850 kg · mm ² (37730 N · mm ² ).
[0017]
The rigidity value EI (B) at the position B (the position where the outer diameter of the solid tip portion becomes maximum) of the exposed portion length SL (350 mm) of the tip solid portion 24A is 6440 kg · mm ² (63112 N · mm ² ), The bending rigidity value EI (B) ′ of the conventional tip rod at the position B is 16100 kg · mm ² (157780 N · mm ² ).
[0018]
The ratio A: B: C of the bending stiffness values is 1: 13: 168. Further, in comparison with the related art at each position, the position A is 13%, the position B is 40%, and the position C is the same 100%. In other words, the difference in the bending rigidity ratio increases with the tip of the tip of the rod, and the flexibility of the tip of the tip of the tip according to the present invention increases as compared with the conventional tip. .
[0019]
The bending rigidity of the tip tubular portion 24B may be configured to gradually approach the bending rigidity value of the tip rod at the position C as shown by a line 24B ', but about L1 / 4 forward from the position C as shown by a two-dot chain line 24B ". Up to the position, the bending rigidity value is not greatly reduced unlike the conventional tip rod, but the bending rigidity value may start to decrease greatly near the position. The change of the bending rigidity from the 22 to the head rod 24 becomes smooth, and the bending characteristics of the entire rod related to the operability of the entire sweetfish rod are improved.Thus, the whole or a part of the front rod is very large and flexible. With this configuration, the weakness of the decoy sweetfish due to the swinging of the sweetfish rod holding portion, the inconvenience in removing and replacing the sweetfish, and the like can be reduced, and the operability of the whole rod can be maintained as in the prior art.
[0020]
In order not to greatly reduce the bending rigidity from the position C of the tip rod to the position of about L1 / 4, the width of the prepreg 22C shown in FIG. And the elastic modulus of the reinforcing fiber may be improved.
[0021]
Although the adjusting mechanism for adjusting the rod length is not described in the above-mentioned ayu rod, it may be provided. For example, if the whole or a part of the middle rod 12 is configured to be able to be stored and held in the former rod 10, when the decoy sweetfish is sent out or pulled out, fishing is performed with the maximum length, and prey is taken. If you shorten the time while waiting for the catch, or when you remove (take in) the prey ayu from the device, the work will be easier. However, with the sweetfish rod of the present invention, when the sweetfish is removed from the device, the inconvenience in taking in the sweetfish is reduced without adjusting the length.
[0022]
FIG. 5 shows another embodiment according to the present invention, in which a tip rod 24 'is formed of a tubular body. In the formation of this tubular spike, a carbon fiber having an elastic modulus of 35,000 kg / mm ² (343000 N / mm ² ) and a carbon fiber having an elastic modulus of 1000 kg / mm ² (9800 N / mm ² ) are used. Instead of the carbon fiber, it can be formed by using a bias in which a carbon fiber having an elastic modulus of 24000 kg / mm ² (235200 N / mm ² ) intersects in the inclined direction.
[0023]
Assuming that the total length of the tip rod 24 'is L0', and that a half L0 '/ 2 position is D, a graph of bending rigidity corresponding to FIG. 4 is as shown in FIG. 24 "is a graph of the tip rod 24 'according to the present invention. The bending rigidity value EI (C) of the tip part C of the holding rod is 81400 kg · mm ² (797720 N · mm ² ), and the tip part A of the tip rod 24'. Has a flexural rigidity value EI (A) of 1100 kg · mm ² (10780 N · mm ² ), while that EI (A) ′ of the tip of a conventional tip rod is 3850 kg · mm ² (37730 N · mm ² ). Further, the rigidity value EI (D) at the position D is 11000 kg · mm ² (107800 N · mm ² ), and the bending rigidity value EI (D) ′ of the conventional spikestick at the position D is 16110 kg · mm ² (15778 N · mm ² ).
[0024]
The ratio A: D: C of the bending stiffness values is 1:10:74, and in comparison with the conventional at each position, the position A is 13%, the position D is 68%, and the position C is the same 100%. It is. In other words, the difference in the bending rigidity ratio increases with the tip of the tip of the rod, and the flexibility of the tip of the tip of the tip according to the present invention increases as compared with the conventional tip. .
[0025]
Each explanation described in each of the above embodiments can be applied to each of the other embodiments as long as there is no inconsistency.
[0026]
【The invention's effect】
As is apparent from the above description, according to the present invention, it is possible to reduce the influence on the decoy sweetfish due to the shaking of the rod in fishing, and to facilitate the work of removing or replacing the sweetfish from the device. Provision of a pole becomes possible.
[Brief description of the drawings]
FIG. 1 is a side view of a sweetfish rod according to the present invention.
FIG. 2 is an enlarged view of a rod tip region of the rod of FIG.
FIG. 3 is an explanatory view of a method of manufacturing the tip rod of FIG. 1;
FIG. 4 is a graph showing the bending stiffness of the rod tip region of FIG. 1;
FIG. 5 is an enlarged view of a pole tip region of another embodiment.
6 is a graph showing a bending stiffness corresponding to the pole tip region of FIG. 5 [Description of reference numerals]
22 Head-holding rod 24 Head-end rod 24A Head-end solid portion 24B Head-end tubular portion A Head-end tip B Largest diameter portion of solid body C Tip-end portion of head-holding rod D Half the length of tubular head-end rod

Claims (6)

A head rod is formed by connecting a solid body to the front side of the tubular body, the length of the head rod is about 10% or less of the maximum length of the spliced ayu rod, and a type of ayu to bind a fishing line. When the tip of the tip of the tip is A, the maximum diameter of the solid body is B, and the tip of the tip is C, the bending rigidity ratio A: B: C of each part is 1: (3 to 18): Ayudani characterized by being (100-200). A head rod having a tubular body, wherein the length of the head rod is about 10% or less of the maximum length of the joint type ayu rod, and a type of a fishing rod for binding a fishing line, wherein the tip of the head rod is provided. Where A is a portion, D is a portion that is の of the entire length of the tip of the ear, and C is a tip of the tip of the ear, and the bending rigidity ratio A: D: C of each portion is 1: (10-18) :( 40-80). Ayudani, characterized by: The bending stiffness of the A, B, and C parts is 400 to 800 kg · mm ² (3920 to 7840 N · mm ² ), 1200 to 14400 kg · mm ² (11760 to 141120 N · mm ² ), and 40000 to 160,000 kg · mm ^{2, respectively.} Ayusao of claim 1, wherein the (392000~1568000N · mm ²⁾ in the range of chosen to be within the scope of the bending rigidity ratio. Wherein A, D, the bending rigidity of the C portion, ^{respectively, 1000~2000kg · mm 2 (9800~19600N ·} mm 2), 10000~36000kg · mm 2 (98000~352800N · mm 2), 40000~160000kg · mm 2 Ayusao of claim 2 wherein the (392000~1568000N · mm ²⁾ in the range of chosen to be within the scope of the bending rigidity ratio. The sweetfish rod according to claim 1 or 3, wherein the length of the exposed portion of the solid body is equal to or less than half of the total length of the spikestick. The sweetfish rod according to any one of claims 1 to 5, further comprising a length adjusting mechanism capable of adjusting the length at hand.

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