JPH1042751A - Internally threaded fishing rod - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an internally threaded fishing rod capable of reducing resistance of a fishing line by making inner diameter of the tip fishing rod large and having flexible state. SOLUTION: This internally threaded fishing rod is obtained by using a rod pipe using a synthetic resin as a matrix and reinforced by a reinforcing fiber, and average taper ratio of inner diameter of a tip fishing rod 14 is formed in a nearly straight shape of <=1.5/100 and average taper ratio of the inner diameter of a tip-holding fishing rod 12 is larger than average taper ratio of the tip fishing rod 14 and a flexural modulus of the top of the tip fishing rod 14 is set so as to become 2/3 based on average value in the axial length direction of flexural modulus of the tip holding fishing rod 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a through fishing rod.

[0002]

2. Description of the Related Art Conventionally, in order to soften the condition of the tip of a tip, the tip of the tip of the tip is formed in a tapered shape in which the taper is increased, and the diameter of the tip of the tip of the tip is reduced. Was formed and achieved.

[0003]

However, if the fishing rod is a hollow fishing rod, the fishing line must be inserted through the hollow portion inside the rod tube. Therefore, if the tip of the tip rod is made thinner,
There is a disadvantage that the fishing line resistance increases. Conversely, if you increase the tip of the head rod to reduce fishing line resistance,
In general, the bending rigidity is high, and it is difficult to bend, resulting in a hard spike.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to increase the inner diameter of the head rod to reduce the fishing line resistance and to provide a flexible through-hole fishing rod that is easy to bend.

[0005]

SUMMARY OF THE INVENTION In view of the above-mentioned object, the present invention relates to a through fishing rod using a rod tube reinforced by a reinforcing fiber using a synthetic resin as a matrix, wherein the average taper ratio of the inner diameter of the tip rod is 1%. 0.5 / 1000 or less, the average taper ratio of the inner diameter of the ear rod is larger than the average taper ratio of the ear rod, and the bending elastic modulus of the forward end of the ear rod is A through fishing rod characterized in that it is set to be not more than 2/3 of the average value of the flexural modulus in the axial direction. The average taper ratio refers to a taper ratio by a line connecting the front position and the rear position of the rod pipe excluding the front and rear joints. The average value in the axial direction is a value obtained by averaging respective values at appropriate several places (for example, three places of a front part, an intermediate part, and a rear part) in the axial direction of the rod pipe excluding the front and rear joints. . The bending elastic modulus is a value obtained by dividing a bending rigidity EI obtained by a four-point bending test by a second moment of area I, and can be said to be an average longitudinal elastic modulus in a cross section of a material. The bending test may be a three-point bending test.

Since the inner diameter of the tip rod is substantially straight, the inner diameter can be increased up to the tip of the tip rod, so that the fishing line resistance can be reduced. In addition, since the average taper ratio of the inner diameter of the ear rod is larger than that of the head rod, the diameter of the ear rod becomes suddenly larger than that of the ear rod, so that the bending rigidity is relatively sharper than that of the ear rod. Become higher. Therefore, the tip becomes relatively easy to bend. Furthermore, since the bending elastic modulus of the forward end of the ear rod is set to be 2/3 or less of the average value of the bending elastic modulus of the ear rod in the axial direction, the winding direction of the prepreg or the like and the material From the viewpoint, the tip of the tip of the tip is easily bent, and the tip becomes more flexible.

[0007] The above 2/3 or less is preferably set to 1/2 or less in order to make the tip more flexible and flexible. Further, even if this is 2/3 or less or 1/2 or less, the taper ratio of 1.5 / 1000 or less is 1/1000.
Or less, more preferably 0.6 / 1000 or less. This is because it is easy to increase the inner diameter up to the tip of the tip rod. Furthermore, the above-mentioned numerical value of claim 1 may be a combination of any of the numerical values described above, and even if it is the same as in claim 1, the weight is not heavy, and a sharp touch-like tip-like softness of the tip is obtained. The length of the tip rod (including the top guide if it is present) is preferably 95% or less of the length of the tip rod, more preferably 90 to 60%. In this way, even if the inner diameter of the tip is relatively large, a flexible tone can be obtained, and a relatively large bending stiffness is required as compared to the tip of the tip of the tip, such as the base of a conventional long tip. Here, the portion described here corresponds to the forward portion of the ear pole. The ear rod has a suddenly larger diameter than the head rod, and it is also possible to use reinforced fibers with a high elastic modulus. For this reason, even if it is extremely thin, the required bending rigidity can be obtained. The weight can be reduced, and a sharp tone without lifting weight can be obtained.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in more detail with reference to embodiments shown in the accompanying drawings. FIG. 1 is a view showing a use state of a swing-out through fishing rod according to the present invention. The middle rod 12 is spliced to the former rod 10, and the middle rod 1
The tip rod 14 is joined to 2, and each rod tube is formed by using a synthetic resin such as an epoxy resin as a matrix and reinforced with a reinforcing fiber such as a carbon fiber. A top guide 16 is attached to the tip of the tip rod 14, a rod end part 22 is screwed to the rear end of the former rod 10, and a reel leg fixing device 18 for fixing the reel 20 at an appropriate position. A long hole is provided in the front part, and a fishing line introduction part 24 for introducing the fishing line 26 drawn from the reel 20 into the inside of the rod pipe is provided in the long hole. The fishing line introduction part 24 also forms a long hole 28 (FIG. 2). Also, it is only necessary that the head rod and the ear rod are present, the number of rod pipes is arbitrary,
The former rod 10 may be an ear rod without the middle rod 12.

The part G1 forming the tightening nut portion on the front side of the reel leg fixing device 18 is formed to be long, and its surface is covered with a foaming member or a resilient member such as sponge or cork for improving gripping. . Another grip portion G2 covered with a similar member is formed on the rear side of the reel leg fixing device 18. In this embodiment, the tip rod 14 and the top guide 16
Is the length L2 of the middle rod 12, which is the
Less than 95%, more preferably
Set to a value of 90-60%. However, this length requirement is not essential in the present invention.

FIG. 2 is a longitudinal sectional view of the state in which the fishing line 26 has been inserted. The stored middle rod 12 is received by a receiving portion 22T formed to protrude inside the rod bottom part 22 of the former rod 10, and the tip of the middle rod projects from the former rod to the extent that it can be picked up with a finger. Except for the receiving portion 22T, a space SP1 is formed between the rod bottom part 22 and the rear end of the middle rod 14 for bending and inserting the fishing line. Since the maximum diameter of the top guide 16 detachably screwed (or may be fitted) to the tip of the tip rod 14 is large, the tip rod 14 is caught by the tip of the middle rod 12 and protrudes so as to be pinched by a finger. I have. The fact that the top guide 16 of the middle rod 12 and the tip rod 14 protrudes means that, when the fishing line 26 is stored in a state where the fishing line 26 is inserted as shown in FIG. It becomes easy to release the entanglement by picking the tip of each rod tube.

Since the tip rod 14 is formed to be shorter than the center rod 12 by a predetermined amount, the rear end of the stored tip rod is detachably screwed to the center rod, and a hard guide ring 12G made of ceramics or the like is attached thereto. Space SP2 between the plug body 12S
Is formed, and even if the fishing line is slackened when the tip rod is stored, the fishing line can be stored here and it is easy to prevent the fishing line from being pinched between the rod pipes. A plug 14S is screwed to the rear end of the tip rod 14, and a deformable fluff 14R having a shape expanding toward the rear is attached to the rear. This prevents the stored fishing line from moving toward the tip end of the fishing rod and getting entangled with the head rod, and also allows the fishing line to be easily guided into the head rod when the fishing line is inserted from the fishing line introduction part side. Or Further, the difference between the inner surface of the former rod 10 and the outer peripheral surface of the middle rod 12 is 1.5 mm or more in diameter difference, preferably 2 m.
If the clearance is set with a difference of at least m, the fishing line can easily pass freely during storage.

The main body of the top guide 16 is made of metal such as titanium or stainless steel, but may be made of synthetic resin such as nylon, ABS resin, fluorine resin, or other ceramics. Base 1 which is a mounting part to the tip rod 14
6T is formed to have a length that penetrates into the inside of the middle pole when stored. Therefore, it is strong against a load from the side, and it is possible to prevent the spikes from being carelessly broken in the stored state. Also,
The inner rod 12 is reinforced with a metal tube 12K in the shape of a base on the outer periphery of the tip, and the portion of the metal tube 12K penetrates into the inside of the former rod 10 during storage, and is strong against a load from the side.
It is possible to prevent the middle rod tip from being inadvertently damaged in the stored state.

FIG. 3 is an enlarged longitudinal sectional view of the middle rod 12, the head rod 14, and the top guide 16. FIG.
Front position P excluding each joint area between top guide and middle rod
The average taper ratio obtained by dividing the difference between the inner diameters of the inner position 1 and the inner position of the rear position P2 by the distance between the two positions is approximately 1.5 / 1000 or less as described above. The average taper ratio obtained by dividing the difference between the inner diameters of the front position P3 and the rear position P4 excluding the joining region by the distance between the two positions is set to be larger than the average taper ratio of the tip rod. Since the inner diameter of the tip rod 14 is substantially straight as described above, the inner diameter can be increased up to the tip of the tip rod, and therefore the fishing line resistance can be reduced. In addition, since the average taper ratio of the inner diameter of the inner rod 12, which is the ear rod, is larger than that of the ear rod, the inner rod suddenly becomes larger in diameter than the ear rod. It rises relatively steeply. Therefore, the tip becomes relatively easy to bend. In addition, since the outer diameter of the tip rod is also tapered along the inner diameter, when stored in the middle rod, the diameter difference between the outer peripheral surface of the tip rod and the inner peripheral surface of the middle rod increases as it is stored,
In the storage in a state where the fishing line is inserted, the possibility that the fishing line is pinched between both rod pipes is reduced, which is convenient.

The tip rod 14 is also a plug 14S like the middle rod 12.
A hard fishing line guide ring 14G made of ceramics or the like is mounted on the base. Further, the top guide 16 is provided with a similar rigid guide ring 16G at the front end and a similar rigid guide ring 16G 'with a small diameter at the rear. Further, spiral fishing line guides RG1 and RG2 are integrally formed on the head rod 14 and the inner rod 12 by heat-curing using a member or the like obtained by impregnating a synthetic resin such as an epoxy resin into a carbon fiber bundle. ing. The NG is not provided with the spiral guide RG2 in the area immediately after the joint on the front side of the middle rod 12. This is because the fishing line is likely to be pinched between the spiral guide in the middle rod and the rear end of the tip rod in the initial stage of storing the tip rod 14 in the middle rod with the fishing line inserted,
This is to prevent this.

FIG. 4 is an explanatory view of a method of manufacturing the main body of the tip rod 14 from which the fishing line guide is omitted. First, the main direction of the reinforcing fibers S of the substantially rectangular prepreg sheet P1 is
0 to the tapered core so as to be oriented in the substantially circumferential direction.
Winding around. Next, a substantially rectangular prepreg sheet P2 is wound twice on this so that the main direction of the reinforcing fibers is directed substantially in the axial direction. On this, a triangular prepreg sheet P3 is wound with its leading end positioned at an intermediate position of the prepreg sheet P2 and the main direction of the reinforcing fibers oriented substantially in the axial direction. Turn. In addition, another triangular prepreg sheet P
4 is wound so that the leading end position thereof is located at an intermediate position of the prepreg sheet P3, and the main direction of the reinforcing fibers is directed substantially in the axial direction.

Further, it is wound twice so that the main direction of the reinforcing fibers S of the substantially rectangular prepreg sheet P5 is inclined at an angle θ of about 45 degrees with respect to the axial direction of the cored bar 30. On this, another rectangular prepreg sheet P6 is wound twice so that the main direction of the reinforcing fiber S is inclined at approximately 45 degrees to the opposite side to the axial direction of the cored bar 30. The above number of turns is an example, and other numbers of turns can be selected. However, sheet P2
The number of turns can be selected in the range of the fiber amount smaller than the fiber amount in the inclined direction. However, if it is not necessary to largely bend the rear part of the spike rod to be formed, the axial lengthwise fiber may be wound so as to be larger than the inclined direction fiber.

The above prepreg sheets P1, P2, P
3, P4, P5, and P6 are carbon fibers as reinforcing fibers, and are impregnated with about 35 wt% of an epoxy resin. Except for prepreg sheets P3 and P4, carbon fiber is 1
A thin sheet of about 0 g / m ² is used. The fibers in the rod of the soft tone of the tip, 30 g / m ² approximately less, 5
g / m ² of about or more sheets are preferable, less 30 g / m ² about than about 100 g / m ² is preferably a hard tone rod. The prepreg sheet P3 uses carbon fibers having a higher longitudinal modulus than the sheet P2, and the prepreg sheet P4 uses carbon fibers having a higher longitudinal modulus than the sheet P3. In particular, the longitudinal elastic modulus of the reinforcing fiber S of the prepreg sheet P2, which becomes the axial length direction fiber in the tip region of the tip rod where softness is required, is preferably 30 ton / mm ² or less.

After being wound in this manner, the inner layer of the tip region of the spike rod 14 which is heated under pressure and heated is a circumferential fiber layer, and the outer layer (intermediate layer) is an axial fiber layer. And the outer layer is a layer of directional fibers. In this case, the tip region of the tip rod 14 is configured with a smaller number of fibers in the axial length direction than the fibers in the inclined direction, so that the bending rigidity is small and flexible. In addition, the presence of the circumferential fibers in the inner layer and the presence of the inclined fibers in the outer layer are strong against collapse and destruction, and further, when the tip rod is greatly bent, the axial length of the inclined fibers in the outer layer. The presence of the directional component can prevent interfiber separation. Furthermore, due to the presence of the fibers in the axial direction of the intermediate layer, although small, permanent deformation and bending of the tip rod in the case of large bending are prevented.

In this structure, the inner layer dominated by the circumferential fibers may not be provided, but if this layer is present, the number of fibers in the inclined direction in the outer layer can be reduced. In addition, if the inclined fiber is inclined in both plus and minus directions as in this embodiment, the spike rod can bend without any bias in any direction, and the fiber layer in one inclined direction is preferable. Or just Further, the inclined fiber layer may be present inside the axial length fiber layer, but it is preferable that the inclined fiber be present on the outside in order to prevent the fiber from being crushed when being greatly bent.
The resin impregnation rate of the inclined fiber layer is preferably set to be equal to or more than that of the axial fiber layer, and more preferably 30%.
Set to not less than wt%. Further, the same material having the same linear expansion coefficient as the axial length fiber and the inclined direction fiber is preferably used. In the case of a combination of carbon fiber and glass fiber having different linear expansion coefficients, bending occurs at the time of molding, which is not so preferable. It is preferable that the above-mentioned inclination angle θ be set in a range of about 35 to 75 degrees other than 45 degrees.

On the other hand, in the middle rod 12, the average value of the bending elastic modulus of the middle rod in the axial direction is 3/2 times or more, and preferably 2 times or more, than the bending elastic modulus of the tip region of the tip rod 14. The structure is such that the bending rigidity is relatively improved so that This can be set so as to increase the amount of the axial-direction fibers by mainly combining the layer of the circumferential-direction reinforcing fibers and the layer of the axial-direction reinforcing fibers without disposing the inclined-direction reinforcing fibers. . However, there may be tilt direction reinforcing fibers.

In addition to the fact that the tip rod is made larger and less rigid than the middle rod by the shape described above, the tip region of the tip rod 14 is made flexible in view of the above-mentioned fiber direction and material properties, and the Since the bending rigidity of the middle rod 12 is improved, even if the fishing rod guide is made straight regardless of the load by making the tip rod straight and increasing the inner diameter of the tip, the tip can be easily bent, The deflection balance can be improved, and if the load increases, the deflection can easily move to the base of the rod in response to the load, thereby improving the rod condition. That is, it is possible to balance the conflicting matters of reducing the fishing line resistance and improving the condition of the rod in the through fishing rod.

If the tip rod 14 is set shorter than the middle rod 12 as described above, a sharper and more flexible tip feel can be obtained, so that the rod tone is further improved and the balance is further improved. Can be done.

[0023]

As is apparent from the above description, according to the present invention, in addition to the fact that the shape of the head rod is made smaller and smaller than that of the ear-holding rod due to its shape, the head is also improved in terms of fiber direction and material properties. Since the tip area of the rod is flexible and the bending rigidity of the rod is relatively improved, the rod is straightened and the inner diameter of the tip is enlarged to smoothly guide the fishing line regardless of the load. Even if it is configured, the tip can be easily bent, the bending balance can be improved, and if the load increases, the bending can easily move to the base of the rod sequentially, and the rod condition can be improved. That is, it is possible to balance the conflicting matters of reducing the fishing line resistance and improving the condition of the rod in the through fishing rod.

[Brief description of the drawings]

FIG. 1 is a side view of a fishing rod according to the present invention.

FIG. 2 is a longitudinal sectional view of the fishing rod of FIG. 1 in a stored state.

FIG. 3 is an enlarged longitudinal sectional view of a head rod and a head holding rod including a top guide.

FIG. 4 is an explanatory view of a method of manufacturing the tip rod main body of FIG. 1;

[Explanation of symbols]

 12 Middle rod (Homochi rod) 14 Head rod

Claims (1)

[Claims] A through fishing rod using a rod tube reinforced by a reinforcing fiber using a synthetic resin as a matrix, wherein the average taper ratio of the inner diameter of the head tip rod is formed in a substantially straight shape of 1.5 / 1000 or less. The average taper rate of the inner diameter of the ear rod is larger than the average taper rate of the ear rod, and the bending elastic modulus of the forward end of the ear rod is 2 of the average value of the bending elastic modulus of the ear rod in the axial direction. A through fishing rod characterized by being set to be at most / 3.