JPH1084820A - Hollow fishing rod - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hollow fishing rod which is internally provided with fishline guides while preventing stress concentration and has high strength. SOLUTION: A forward convergent tapered part 12S is formed right after the joint part 12T at the front end of a rod pipe 12. The part behind this tapered part 12S is a straight or forward convergent gently tapered rod pipe body part 12H. The fishline guide RG2 is projected and disposed on the inner side of this rod pipe body part 12H. The inside bore d2 of this fishline guide RG2 is larger than the bore d0, d4 of the joint part 12T. Reinforcing layers H1, H2 for reinforcing the main body layer are disposed from the joint part 12T to at least the foremost end position of the fishline guide RG2.

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 having an annular or spiral fishing line guide protruding inside a rod tube.

[0002]

2. Description of the Related Art In recent years, through fishing rods have been used because fishing lines are not easily entangled with the rod tips. In this middle fishing rod, a fishing line is generally inserted inside the rod tube so that a fishing line guide is provided inside the rod in order to reduce the line resistance.

[0003]

However, the joint portion of the fishing rod receives a load acting on the spliced front small-diameter rod tube at the joint portion, so that the joint portion of the fishing rod needs to have a strength that can withstand the load. On the other hand, when a fishing line guide is provided inside a large-diameter rod pipe from the viewpoint of reducing fishing line resistance, the rigidity of the fishing line guide portion is higher than that of a portion without the fishing line guide, and stress concentration occurs in a portion without the guide. In particular, when the fishing line guide is spirally continuous, the rod pipe is weak near the broken end of the fishing line guide, and stress concentration occurs. Thus, in a fishing rod, the rigidity generally varies depending on the part,
Measures for stress concentration are required. Furthermore, if the joint is set to the swing-out type, the front small-diameter rod pipe must be configured to be housed inside the rear large-diameter rod pipe, and the dimensions of each part are restricted. As described above, it is necessary to set the rigidity balance of the entire fishing rod so as to obtain a smooth bending in consideration of stress concentration while being subjected to dimensional restrictions.

Accordingly, an object of the present invention is to provide a high-strength through fishing rod having a fishing line guide provided therein while preventing stress concentration.

[0005]

SUMMARY OF THE INVENTION In view of the above object, according to the present invention, in the first aspect, a narrow front taper portion is formed immediately after a joint portion of a rod tube tip portion, and the rear portion of the taper portion is straight. Or, it is a rod body part of a tapered gentle tapered shape, and a fishing line guide is disposed protruding inside the rod body part, and the inner diameter of the fishing line guide is larger than the inner diameter of the joint part. And a through fishing rod provided with a reinforcing layer for reinforcing the main body layer from the joint portion to at least the most distal end position of the fishing line guide. In addition, the reinforcement according to claim 2, wherein a fishing line guide is integrally formed inside the rod tube, and the main body layer is reinforced from a joint portion at a rear end portion of the rod tube to at least a rearmost position of the fishing line guide. A through fishing rod provided with a layer is provided.

According to the first aspect of the present invention, since the fishing line guide is provided, the fishing line resistance is reduced. Since the inner diameter of the fishing line guide is larger than the inner diameter of the joint portion at the front end, the rod tube and the small diameter rod tube on the front side are connected. Even if they are spliced together, the front small-diameter rod pipe can be stored inside this rod pipe. In addition, since the reinforcing layer for reinforcing the main body layer is provided from the joint at the front end to at least the most distal end position of the fishing line guide, the joint having high rigidity and the seam guide are disposed. It is possible to prevent stress from being concentrated when the fishing rod flexes in a region originally having low rigidity between the region and the region. Further, a fishing line guide which also functions as a reinforcement is formed continuously with the reinforcement layer, and most of the reinforcement layer has a tapered portion having a tapered taper larger than the rod pipe main body and a joint portion in front thereof. , The difference in rigidity with the rod tube main body is small and balanced, and the bending of the fishing rod becomes smooth.

According to the second aspect of the present invention, since the fishing line guide is provided, the fishing line resistance is reduced, and the reinforcing layer is formed from the joint at the rear end of the rod pipe to at least the rearmost position of the fishing line guide. Therefore, stress can be prevented from being concentrated when the fishing rod flexes in a region having a low rigidity between the reinforced and rigid joint portion and the region where the fishing line guide is provided. . Further, since the fishing line guide which also functions as a reinforcement is formed continuously with the reinforcing layer, the bending can be continuously smoothed toward the rod tube tip side.

[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 side view of a fishing rod according to the present invention.
At 0T, the first middle rod 12, the second middle rod 14 is joined to the joint 12T of the first middle rod 12, and the tip rod 16 is joined to the joint 14T of the second middle rod 14 in a swing-out manner. . A top guide 18 is detachably screwed to the head rod. Each rod tube is made of a synthetic resin such as an epoxy resin as a matrix and reinforced with a reinforcing fiber such as a carbon fiber. Further, a reel fixing device 22 for fixing a reel 26 is mounted on the original rod 10, and a fishing line introduction unit 20 for introducing a fishing line 28 is provided at a front portion of the original rod. This fishing line introduction part may be formed in the first middle rod 12. Grips 28 and 30 are formed on the front and rear of the reel fixing device 22, and 24 is a butt plug, which is detachably screwed.

FIG. 2 is an enlarged view of a longitudinal section of a main part of FIG.
Joint 12T of the first middle rod 12 as a rear large-diameter rod pipe
2 shows a state in which a second middle rod 14 as a front-side small-diameter rod pipe is spliced. The distal end of the first middle rod 12 is a tapered joint portion 12T, and the rear portion is a tapered portion 12S whose diameter is reduced toward the front larger than the taper of the joint portion 12T.
However, the tapered portion may have the same taper as the joint portion. The rear portion of the tapered portion 12S has a slightly forward narrow shape or an almost straight shape.
H, in which a spiral fishing line guide RG2 is integrated at an appropriate pitch.

The length of the tapered portion 12S is longer than the length of the joint portion 12T, and is formed to be at least twice, preferably at least three times, the pitch of the fishing line guide. However, a step portion may be used instead of the tapered portion, and the rear portion of the joint portion may be a rod pipe main body having a large inner diameter. Also in this case, the reinforcing layer extends to the fishing line guide portion in the rod pipe main body as described later.

A first reinforcing layer H1 is provided inside the joint 12T.
Are integrated, and the second reinforcing layer H2 is integrated inside the tapered portion 12S. The taper ratio of the inner surface K2 of the second reinforcing layer exceeds 2/1000 and is 100/100.
0 or less is preferable. Further, the rear end edge L2 of the second reinforcement layer that is interrupted is continued to the front end of the fishing line guide RG2, and the other portion E2 of the rear end edge L2 that is not continuous with the fishing line guide is formed into a curved surface or an inclined surface. The thickness is gradually reduced to be continuous with the rod pipe body 12H, thereby maintaining the continuity with the fishing line guide, preventing a sudden change in the thickness and relieving stress at the time of bending. Preferred without damaging. Further, the rear edge L2 is formed in a direction substantially perpendicular to the longitudinal direction of the rod pipe, and the reinforcing layer is uniform in the circumferential direction of the rod pipe, so that the reinforcing effect is not biased and is preferable.

Regarding the thickness of each part of the first inner rod 12 having the above structure, the thickness t4 of the joint portion is set to be larger than the thickness t1 of the rod tube main body and smaller than the total thickness t2 of the fishing line guide portion. , And others are as follows. t2 ≧ t3 ≧ t4> t1 Accordingly, the joint portion and the tapered portion are formed by the thickness t of the rod tube main body 12H.
Since the thickness is thicker than that of No. 1, the strength is improved, and the joint strength can be countered.

The relationship between the inner diameters is as follows. d1> d2 ≧ d3>d0> d4 Accordingly, the inner diameter d2 of the fishing line guide is equal to the maximum outer diameter d0 of the rear end joint of the second middle rod 14 (this is the joint 12T of the first middle rod).
Is smaller than or equal to the maximum inner diameter of the large-diameter rod pipe 12, and the small-diameter rod pipe 14 can be accommodated behind the rod-pipe main body portion 12 </ b> H of the large-diameter rod pipe 12.
If it is above, the storage is easy, and even if the fishing line is stored in a state where the fishing line is inserted into the rod, the small diameter rod 14 and the fishing line guide RG2
It is possible to prevent the fishing line from getting entangled with the fishing line.

As for the wall thickness, the joint portion 12T and the tapered portion 12S are thicker than the wall thickness t1 of the rod body 12H, and the strength and the bending rigidity are improved. The tip is tapered and the rod body 12
Since the diameter is reduced more than T, the bending rigidity is small by that much. In addition, the fishing line guide also has a reinforcing effect on the rod pipe main body side, and as a result, the rigidity balance of the entire rod pipe is taken. . Therefore, the bending is likely to be smooth. Further, since the diameter of the front end where the fishing line guide is not provided is reduced, the height of the fishing line guide can be easily set high, which contributes to the reduction of the line resistance.

The taper ratio of the rod body 12H is 2/100.
If it is formed to be 0 or less, preferably 1/1000 or less, the fishing line guide RG2 is formed of a resin or a fiber-reinforced resin body, and when pressed and heated to be integrated with the rod-tube main body of the fiber-reinforced resin, a tightening tape or the like is used. The displacement of the fishing line guide element body and the flow of resin and fiber caused by the action of the pressure can be suppressed to a small extent, stable molding can be performed, and the strength is improved.

The second intermediate rod 14 of the small-diameter rod pipe is formed at its rear end with a holding member 1 holding an annular guide ring G4 formed of a synthetic resin material or the like and formed of a hard member such as ceramics.
4S is detachably screwed. A spiral fishing line guide RG4 is integrated at an appropriate pitch inside the rod tube main body. The rear end of the fishing line guide is located near the holder 14S. The rear portion of the holding body 14S has a conical receiving surface 14A that expands rearward so as to easily receive a fishing line or the like during threading or the like. Holder 1
The front part of 4S is formed with a concave part that expands forward,
When the tip rod 16 is stored, the rear end is easily received, and depending on the size, acts to hold the rear end.

The reinforcing layer H1 is an inner layer for reinforcing the joint portion 12T, and the reinforcing layer H2 is an inner layer for connecting the reinforcing layer H1 and the fishing line guide RG2. Mainly formed. Even in the case of prepregs mainly composed of circumferential fibers, the strength is improved by increasing the thickness of the rod pipe, thereby improving the seaming resistance. In addition, it is possible to prevent stress concentration occurring at the rear end portion of the fishing line guide, and to reduce the longitudinal direction. Since the number of fibers is reduced and the rod pipe is tapered by the taper, the bending rigidity does not increase despite the high strength, and the bending of the entire rod pipe becomes smooth. The reinforcing layer H1 is the entire layer for reinforcement obtained by winding a prepreg other than the main body prepreg for forming the main body layer of the rod pipe. The inner layer side of the main body prepreg, the middle layer, the outer layer, or These may be combined.

As in this embodiment, it is not always necessary to separately form the reinforcing layer H1 at the joint portion and the layer H2 connecting the reinforcing layer H1 to the fishing line guide. For example, the reinforcing layer H1 is extended by extending the reinforcing layer H1. The layer H2 may be formed together.
When they are formed separately, it is preferable to form the boundary portions somewhat overlapped as in the present embodiment so that no gap is formed between the two layers, and the outer diameter of the polymerization site swells outward. Thus, it may be formed thicker than before and after. In particular, it is preferable to form a thick portion near the rear end of the spliced small diameter rod pipe 14. Further, the area of the reinforcing layer H2 is formed to be thicker than the area of the reinforcing layer H1, and the ratio of the circumferential fibers per unit volume is relatively small. This is because the reinforcing layer H1 has a larger circumferential fiber ratio and can be effectively prevented from being torn or cracked from the rod tube tip, and the reinforcing layer H2 is less required to do so. In the above, the large-diameter rod pipe is described as the first middle rod, and the small-diameter rod pipe is described as the second middle rod. However, this is an example, and the present invention is not limited to this.

FIG. 3 shows another embodiment which is an alternative to FIG.
The difference from the case is that the layer for reinforcing the joint 12T is a reinforcing layer HK extending from the end of the spiral fishing line guide RG2 to a position about two pitches behind.
Further, the final end of the fishing line guide is wound in a direction substantially orthogonal to the longitudinal direction of the rod tube 12, and the thickness of the fishing line guide is gradually reduced from the fishing line guide toward the front, and the tapered portion 12 is formed.
The overlay portion NM terminated in S is formed so as to be continuous with the fishing line guide.

The reinforcing layer HK serves to reinforce a general joint portion, thereby preventing the tapered portion 12S near the joint portion from being reduced in strength and variation in strength, and also has a fishing line guide end portion and its vicinity. This prevents stress concentration due to differences in rigidity with the rod body. Further, the built-up portion NM fills in the difference in height between the top of the fishing line guide and the inner surface of the rod pipe, and acts to prevent stress concentration at the end of the fishing line guide.
When the small-diameter rod pipe spliced in the 2T is stored in the 2T, the rear end of the small-diameter rod pipe does not catch on the end of the fishing line guide, so that it can be stored smoothly. In particular, when the fishing line is stored in a state where the fishing line is inserted, the fishing line can be hardly entangled.

The reinforcing layer HK is preferably formed of one or more layers using a prepreg continuous in the longitudinal direction, but may be wound using a plurality of prepregs divided in the longitudinal direction. The number of laminations is arbitrary, but as a result of the reinforcement, it is preferable that the thickness t4 of the joint portion be 1.2 times or more and 2 times or less the thickness t1 of the rod pipe main body. The reinforcing layer is formed of a drawn prepreg or woven fabric mainly composed of circumferential fibers, or a combination thereof.
By using a prepreg having higher elasticity and strength than the fishing line guide member, the reinforcing effect is further improved. Further, if the amount of fibers in the axial direction of the main body layer is reduced toward the distal end in the range in which the reinforcing layer is formed, it is easy to bend while maintaining high strength against tearing or cracking at the distal end. This paragraph is explained in Figure 2.
The same applies to the case of.

The wall thickness t of the rod tube body with the reinforcing layer added
1 ', the total thickness t2 of the fishing line guide portion, and the thickness t3 in the vicinity of the end portion of the fishing line guide to which the built-up portion NM is added, the following relationship is obtained. t2 = t3>t4> t1 '> t1 t2 = t3 has substantially the same meaning. Thereby, reinforcement efficiency can be improved, fishing line resistance can be reduced by securing the height of the fishing line guide, and the balance of bending rigidity can be improved. However, depending on the formation of the reinforcing layer, the thickness t4 of the joint portion may be larger than the thickness t2.

The taper ratio of the tapered portion 12S is 2/1000.
And preferably 100/1000 or less, but 2/10
It is more preferably more than 00 and not more than 20/1000. The change point of the taper ratio between the rod pipe main body portion 12H and the tapered portion is a portion where the reinforcing layer HK and the build-up portion NM are formed, and the strength is secured even if the reinforcing fibers meander or disturb due to the taper change. Can be made into a high-strength rod tube. Other structures are shown in Fig. 2.
Is the same as

FIG. 4 shows an embodiment of the tip of the rod tube 12. The reinforcing layer H11 for the main body layer is provided inside the joint portion 12T, and the fishing line guide RG2 is formed into a smooth shape in which the protruding side of the cross section is surrounded by a curve, and after terminating the guide, the guide body is removed. The overlaid portion NM is formed as it is or is crushed to be used widely, so that a step between the reinforcing layer H11 and the end portion of the fishing line guide is reduced. The thickness t15 at the joint end is thinner than the thickness t12 of the fishing line guide portion and thicker than the thickness t11 of the rod pipe main body, preferably 1.2 times or more and 1.6 times or less, and more preferably 2 times or less. I do. The thickness t14 of the built-up portion is substantially the same as or thicker than the thickness t12, and the thickness t14 'of the overlapped portion with the reinforcing layer H11 is the largest.

The rear end edge E12 of the built-up portion NM is formed as a curved surface or an inclined surface, and has a function of alleviating stress concentration and a function of preventing the fishing line from being damaged. The outer shape of the joint portion is tapered by forming the outer periphery 12R of the tip portion into a curved shape or an inclined shape. Further, the rod pipe 12
Since the change point of the taper is set at the portion having the maximum thickness t14 ', a decrease in strength can be prevented.

FIG. 5 shows that a built-up portion NM is formed in the tapered portion 12S immediately after the joint portion 12T of the rod tube 12, and a spiral fishing line guide RG2 is provided in the rod tube main portion 12H following the tapered portion NM. The built-up portion is made substantially continuous with the end of the fishing line guide so that the height thereof is substantially uniform, and the thickness gradually decreases toward the front end. As a result, the small diameter rod tube can be stored smoothly.

FIG. 6 shows another embodiment of the joint portion. The seam portion 12T 'is formed by a separate prepreg which is separated from the prepreg used to form the rod tube main body portion 12H' in which the fishing line guide RG2 is disposed. Let me. In this way, the axial reinforcing fibers used in the prepreg are prevented from meandering by the tapered portion or the step portion, so that the rod tube main body 12H 'can be easily formed and the fishing line guide can be easily formed integrally.

FIG. 7 illustrates a device for smoothly storing the small-diameter rod tube 14 in the large-diameter rod tube 12. Joint 12
The rear portion of the tapered portion 12S immediately after T is a rod tube main body portion 12H in which a spiral fishing line guide RG2 is disposed inside, and the cross section of the fishing line guide is, as shown in FIG. It does not have an orthogonal surface and is surrounded by a curve (semicircle) without corners. On the other hand, the rear end edge 14R of the small-diameter rod pipe 14 spliced to the joint portion and the rear end edge 14SR of the holding body 14S 'holding the annular guide ring corresponding to G4 in FIG. Can be prevented from contacting the fishing line guide RG2 during storage and being caught, damaged, or damaged.

The rounding radius of each corner including the fishing line guide is 1.5 mm or more, preferably 5 mm or more (not necessarily a circle). The rear edge portions 14R and 14SR may be inclined surfaces. The length of the inclined surface appearing in FIG. 7 is preferably 2 mm or more, but may be shorter if it can be stored smoothly.
Further, the holding member 14 is smaller than the surface hardness of the fishing line guide RG2.
What is necessary is just to soften the rear part of S '. For example, when formed of a flexible material such as rubber or synthetic resin, the fishing line and the fishing line guide can be protected. Further, the rear end edge 14R of the small diameter rod tube 14 may be formed or covered with the above-mentioned flexible material, and is more preferably combined with the rounded corner or the inclined surface.

FIG. 8 illustrates the relationship between the main body layer HS of the rod tube and the fishing line guide RG. The body layer HS typically has an outer layer SS, an intermediate layer TS, and an inner layer US, and the reinforcing fibers oriented in the circumferential direction, the reinforcing fibers oriented in the axial direction, and the circumferential direction, respectively. It is composed of fiber reinforced resin prepreg mainly composed of oriented reinforcing fibers. As the innermost layer further inside the inner layer, an axial length reinforcing fiber, a woven fabric, or a resin layer may be provided, and the fishing line guide RG is formed to project inside the inner layer.

If the distribution is such that the circumferential fiber amount of the inner layer or the sum of the circumferential fiber amounts of the inner layer and the fishing line guide is larger than the circumferential fiber amount of the outer layer, the inside of the rod pipe due to the presence of the fishing line guide is increased. It is preferable because the strength can be prevented from decreasing due to the unevenness of the surface. The thickness of the fishing line guide is preferably made thicker than the inner layer. Further, when a fiber having a lower elasticity than the circumferential fiber of the inner layer is used as the fiber of the fishing line guide, it is easy to form a spiral or annular shape, and it is hard to break. With respect to the resin ratio, if the fishing line guide is higher than the inner layer and the fiber density is reduced, it is easy to form a spiral or annular shape, and it is hard to break.

Further, if the fishing line guide RG is formed to have fibers oriented in a direction substantially perpendicular to the axial direction of the rod tube, the fishing line guide RG is easy to receive the fishing line, and is improved in abrasion resistance and line resistance. preferable. Further, this fiber has high abrasion resistance, and a fiber having good slipperiness is preferable from the viewpoint of reducing fishing line resistance. A larger fiber diameter is preferable from the viewpoint of reducing the line resistance because the exposed large-diameter fiber can stably receive and guide the fishing line. When the reinforcing fiber of the prepreg for forming the rod pipe and the fiber of the fishing line guide to be integrated are the same kind of fiber, it is preferable that the fishing line guide be a fiber having a larger diameter from the viewpoint of improving wear resistance and reducing line resistance. . When the reinforcing fibers in the inner layer of the rod tube main body layer are inclined, it is preferable that the inclination direction of the fibers be closer to the inclination direction (directional direction) of the fishing line guide. For example, the reinforcing fiber direction of the inner layer is
When setting to 5 degrees, there are two directions, but 45 degrees on the inclined side of the spiral fishing line guide is selected.

It is more preferable to combine the above requirements. However, the requirements described above need not be met. For example, if the thickness of the fishing line guide is smaller than the thickness of the inner layer, it is suitable for receiving more fishing line on the inner surface of the main body layer.

When the fishing line guide RG is helical, it is suitable to use a synthetic resin as a matrix and reinforced with fibers KS, as shown schematically in FIG. preferable. The fiber is preferably abrasion-resistant fiber or fiber having high slipperiness, in addition to reinforcing fiber such as carbon fiber, ceramic fiber, glass fiber, metal fiber and composite fiber. A high (thick) fishing line guide is likely to be formed by twisting the element impregnated with resin into a bundle of these fibers and winding it around a core. However, it is preferable that the inclination angle θ of the fiber KS is 45 degrees or less, preferably 30 degrees or less with respect to the longitudinal direction of the fishing line guide itself, so that the fishing line passing through the rod pipe passes through the fiber so as to be orthogonal to the fiber.

In addition, in order to increase the height of the fishing line guide to a stable shape, a fishing line guide body formed of a strip of thermoplastic resin or the like which is difficult to completely melt even at the temperature at the time of heat molding is used. At a normal temperature, the shape of the fishing line guide is made similar to the final shape of the fishing line guide in advance, and the shape is wound around a cored bar and formed together with the rod tube main body layer. Alternatively, the fishing line guide body may be formed using a thermosetting resin or a natural material molded into a thread.

FIG. 10 explains the structure of the fishing line guide RG integrally joined to the rod tube main body layer HS. The fishing line guide body RGK is formed in advance by the method described with reference to FIG. This fishing line guide element is formed in a state in which a matrix resin is reinforced by reinforcing fibers KS, and the reinforcing fibers are gathered near the projecting side surface of the element. This reinforcing fiber is preferably a fiber of a wear-resistant member such as ceramics or metal,
It is not essential and may not be required. As the matrix resin, a synthetic resin harder than the matrix resin of the rod tube main body layer is used. For example, a fluororesin tetrafluoroethylene resin is used. It has high hardness and excellent heat resistance.

The fishing line guide element body RGK is connected to a rod tube main body layer or a bonding layer GS of a synthetic resin softer than the matrix resin of the fishing line guide element body (a boundary layer between the main body layer and the fishing line guide element is described later). Also equivalent) via the inner layer of the body layer US
And joined together. As a result, the hardness gradually decreases from the fishing line contact portion, which is the center of the fishing rod guide, toward the fishing rod main body layer, and the fishing line contact portion has abrasion-resistant reinforcing fibers KS. The structure is such that stress is hardly concentrated on the rod body. Examples of the heat-resistant resin material that prevents damage even by heat generated by friction include polypropylene, polyethylene, polytetrafluoroethylene, poly-P-xylylene, polystyrene, polyacrylonitrile, and the like, and these may be used. Also,
By forming a transparent fishing line guide, dirt on the fishing line guide RG inside the rod tube can be easily visually recognized and determined from one end of the rod tube, and cleaning timing can be aimed at.

FIG. 11 illustrates a boundary layer KS between the main body layer HS of the rod pipe and the fishing line guide RG formed integrally therewith. This boundary layer is wider than the width of the fishing line guide and extends before and after the fishing line guide. The boundary layer is made of a synthetic resin such as an epoxy resin having good adhesion to the rod tube body layer, or a fiber such as a glass fiber scrim cloth sheet containing the same. It is formed of a reinforced prepreg or the like. In addition, a carbon tape, a synthetic resin film, paper or the like is used, but not limited to the sheet-like member, but may be a thread-like synthetic resin, cotton thread, or the like. A thermoplastic resin film or thread that does not completely melt during the heat molding of the rod tube may be used.

The main body layer HS may be formed in three layers as shown in FIG. 8, or may be formed in one layer.
Further, the boundary layer KS may be formed so as to adhere to the inner surface without being buried in the main body layer HS as shown in FIG. 11, and the thickness direction of the boundary layer may be partially formed in the main body layer. Or you may form so that the whole thickness may be buried. When buried partially or entirely, it is easy to be buried in the inner layer of the three main layers. In this way, the main body layer is reinforced against stress concentration on the peripheral rod main body layer due to the integration of the fishing line guide, and the strength is improved.

By using a material softer than the matrix material of the main body layer or the fishing line guide, or a rubber material or a soft synthetic resin having high elasticity as the boundary layer, the influence of stress between the main body layer and the fishing line guide can be reduced. Further, the rod can be relaxed, and the strength and stability of the rod can be improved. The reinforcing fiber is disposed on the fishing line guide RG to form a spiral, and the boundary layer KS is formed of a material having releasability from the fishing line guide, or the boundary surface with the fishing line guide is provided with releasability. If the treatment is performed, even if the rod tube main body layer HS is broken in use of the fishing rod, the fishing line guide is easily peeled from the main body layer, and there is also a reinforcing effect by the reinforcing fiber, and the fishing line guide is torn with the breakage of the main body layer. Is prevented, whereby the fishing line inserted therein is hard to be cut, and the device at the tip can be collected.

Compared with the inner layer portion of the main body layer and the fishing line guide, the boundary layer KS is made of a hard material, a high-strength material, a material having a high lubricity, a material having a high abrasion resistance, a material having a high water repellency or oil repellency. If a material with high elongation is used and formed over a wider range in the front-rear direction than the width of the fishing line guide (even over the entire inner surface of the main body layer), in addition to the function as an original reinforcing and relaxing layer,
The surface having these characteristics is exposed inside the rod tube, and a rod tube utilizing the characteristics of these materials can be obtained.

FIG. 12 illustrates a method for integrally forming a fishing line guide on the inner surface of the rod tube main body layer. A spiral fishing line guide will be described as an example. A thick tape 52 is attached to the core 50.
Is wound at predetermined intervals (about 5 to 25 mm), and from above the tape, 56 (0.3 to 3 mm)
), And a thin tape 54 is wound around the thick tape 52 so as to provide a small gap (0.3 to 3 mm) 58. Each of these tapes is made of a material having a heat characteristic that can withstand the heat molding of the rod tube, for example, silicon, polyethylene naphthalate (PEN), polyethylene terephthalate (PET), or the like. A rod pipe forming prepreg is wound on each of these tapes, or a material for a fishing line guide is placed between the thick tapes 52 and the thin tape 54
And then the prepreg (Fig. 1)
In case of 4, prepreg for inner layer and prepreg for outer layer)
In the former case, a spiral fishing line guide RG ′ and a minute ridge SRG of the same material as the main body layer HS are formed to protrude inward as shown in FIG. 13 in the former case, as shown in FIG. Such a spiral fishing line guide RG and a minute ridge SRG are formed inside.

Since the thin tape 54 is used so as to cover the concave space 56 between the thick tapes 52, the fishing line guides RG and RG 'are formed in the same stepped space shape between the thick tapes. Instead, the corners are rounded and formed,
In both the case of FIG. 13 and the case of FIG. 14, a corner portion where the fishing line is caught is not formed, and the fishing line resistance can be reduced while the fishing line is protected. In the case of FIG. 14, the fishing line guide RG
The front and rear edges HSR of the joint between the inner layer US of the main body layer and the inner layer US are formed in a curved surface that is concave inward, so that stress concentration at the front and rear portions of the fishing line guide can be prevented.

The upper surface of the fishing line guide RG is formed in a substantially planar shape, and the upper portion is integrally formed in the inner layer US of the main body layer so as to be partially embedded in the thickness direction. Is rounded, so that damage from the fishing line guide portion can be prevented even when the rod tube is greatly bent. The inner layer US is a layer made of a fiber reinforced resin prepreg mainly composed of circumferential fibers, a resin-only layer, or an inner surface portion of the fiber reinforced resin prepreg containing a large amount of resin. Furthermore,
Water repellency on the fishing line guide and / or the inner layer US,
Even if a treatment having oil repellency, lubricity, etc. is performed, the fishing line guide RG is strongly integrated depending on the embedding condition and the like, so that it is difficult to remove it from the main body layer HS, and the fishing line resistance is reduced.

The minute ridge SRG is a spiral fishing line guide RG.
Are provided substantially parallel to each other, and the height thereof is
G is about 1/10 or less of the height, usually 25 microns or less and about 10 microns. Therefore, even if the fishing line passing through the inside of the rod tube runs in a meandering and slackened state and tries to contact the inner layer of the main body layer, it is received by these minute ridges and the ratio of direct contact with the inner layer can be reduced, Yarn resistance can be reduced. Since both the fishing line guide and the minute ridge are formed substantially in parallel, the angles at which the fishing line strikes are made substantially coincident, the vibration and runout at the time of feeding the fishing line are suppressed, and the fishing line can pass smoothly while slightly spiraling. In addition, both the fishing line guide and the minute ridge can be formed together with the rod tube forming, which facilitates manufacture.

The fine ridges are not limited to those having a semicircular cross section as shown in the figure, but may be the inner surface of the surrounding main body layer (the inner surface of the inner layer).
It is sufficient if there is a convex strip on the center side of the rod tube as compared with. Therefore, even if a wide concave streak exists on the inner surface of the main body layer, its edge can be regarded as a convex streak. There may be a plurality of such strips, and furthermore, the inner surface of the inner layer is formed with finer irregularities or rough surfaces, and these, the above-mentioned minute ridges SRG and the fishing line guide R
A fishing line guide structure in which G is combined may be used.

The fishing line guide RG uses natural materials such as fiber-reinforced resin prepreg, fiber-reinforced metal, ceramics, thermoplastic or thermosetting resin, rubber, and other cotton yarns. In addition, it is preferable to use a material which can be reduced in weight by using a material having a lower specific gravity than a prepreg for a rod pipe, and further has a property of better thread sliding property than a resin of the prepreg for a rod pipe. Other materials having high water repellency and high abrasion resistance are preferable. When it is difficult to obtain the desired physical properties with a single material, the desired physical properties can be easily obtained by coating the surface with a film having these physical properties.

For example, if the fishing line guide is formed of a fluororesin, the fishing line has water repellency and the line slipping property is improved. However, since the adhesion of the rod tube body layer to the fiber reinforced resin prepreg is poor,
If a film for improving adhesion is formed at the interface, or the inner layer US of the main body layer is formed of the same type of resin such as fluororesin, peeling can be prevented.

When a high-strength and high-elasticity reinforcing fiber such as carbon, glass or boron is used for the fishing line guide, and when it is made lower in rigidity (or lower elasticity) than the rod tube main body layer, the volume ratio of the reinforcing fiber is used. Is preferably less than 50%, and when a low-elastic material such as synthetic resin fiber is used as the mixed fiber (mixed material), the mixed material is reduced to 30% or more and 10% or less.
It is better to approach 0%. As the latter example, there is a case where a fluororesin is used as a mixed material and an epoxy resin is used as a matrix material.The fluororesin alone has poor moldability, and epoxy is used for shape retention and integration with the main body layer. Use resin as matrix material. When the rigidity (elasticity) is equal to or more than that of the rod tube main body layer, the ratio is 50% or more,
% Is better. In addition, the direction of the fiber can be made to coincide with the random direction or the longitudinal direction of the fishing line guide, or can be perpendicular to the direction, and can also be made to match the fishing line insertion direction.

FIG. 15 shows a small-diameter rod 14 connected to a joint 12T of a large-diameter rod 12 in which a spiral fishing line guide RG is integrated.
It is a longitudinal cross-sectional view of the state which was joined by the swing-out type. Immediately after the joint portion is a tapered portion 12S, and behind it is a loosely tapered or straight rod body portion 12H having an inner taper ratio of 2/1000 or less. A holding body 12S made of a synthetic resin material or the like holding an annular guide ring G2 formed of a hard member such as ceramics is detachably screwed to the rear end.

The spiral fishing line guide RG is attached to the holder 12S.
If the guide height h1 is configured to be lower than the height h0 of the tip end of the holding body 12S, the threading tool or the fishing line is formed when the threading is performed from the rear. It becomes hard to be caught. As shown in FIG. 16 to be described later, if the end of the fishing line guide is located far from the end of the holding body (about the pitch of the spiral fishing line guide or more), even if the height condition h1 <h0 is not satisfied, It is easy to pass through.

After the spiral fishing line guide RG is integrally formed up to the rear end of the rod pipe, if a female screw portion for screwing the holding body 12S is formed, the spiral fishing line guide RG is moved to the rod pipe main body at the end of the spiral fishing line guide. Is prevented from becoming unstable and insufficient strength, and it is easy to form a stable integrated state. At this time, the fishing line guide in the threaded area is removed and cut, but at this time, the inner surface of the rod pipe main part 12H is just left or slightly cut off, and the inner diameter of the female screw part is changed to the rod pipe main part 12H immediately before. Is formed so as to be equal to or larger than the inner diameter of the extended surface. As a result, even if the fiber direction of the inner surface of the rod pipe main body and the fiber direction of the fishing line guide are different or a different material is used, the thread of the formed internal thread portion is chipped or peeled off because it is removed. Can be prevented. Therefore, a screw structure having excellent durability can be provided.

The material of the helical fishing line guide RG integrally formed on the inner surface of the rod tube is integrated with the surface of the rod tube body 12H where the female screw portion is formed by utilizing the material of the rod, and the thickness is increased. When cutting a female screw using a thick layer, the direction of the direction of the reinforcing fiber of the material is perpendicular to the axis of the rod body, or is formed in the perpendicular direction. By winding the material so as to be within the range of the lead angle of the female screw, a female screw part having stable strength can be formed.

If the spiral fishing line guide RG is terminated within the range of the reinforcing layer HK of the rear joint 12KT as shown in FIG. 15, the reinforcing layer HK and the spiral fishing line guide RG are connected to the rod tube main body. On the other hand, since it is continuous in the longitudinal direction, there is no region where the strength suddenly weakens in the rod pipe main body 12H, and the rod pipe 12 with high strength can be provided. In addition, the prepreg of the reinforcing layer HK may be wound alone or may be divided into a plurality of sheets.
In addition to being provided on the outer layer as in this embodiment, it may be provided as an intermediate layer or an inner layer, or may be distributed and disposed on each layer. If the change point of the taper ratio of the rod pipe is set in a region where such a reinforcing layer is present, the rod pipe strength is maintained even if the reinforcing fibers are disturbed during molding.

FIG. 16 is a longitudinal sectional view of the entire length of another rod pipe 12. The rod pipe main body 12H integrally formed with the spiral fishing line guide RG has a moderately tapered inner taper ratio of 2/1000 or less. Or, it is a straight shape, and a tapered portion 12S with a sharp taper inside is formed at the tip of the straight portion, and a joining portion 12T is formed subsequently. A small-diameter rod pipe 14 is spliced to this joint in a swing-out manner. A reinforcing layer H is provided on the inner surface of a region Z1 from the joint portion to the end of the spiral fishing line guide RG near the tip of the rod main body portion 12H via the tapered portion.
K1 is integrated. Therefore, the portion where the taper ratio changes is in the reinforced region Z1, and becomes a high-strength rod pipe.

A holding body 12S holding the annular guide ring G2 is screwed to the rear end of the rod pipe, and as described above,
The rear end of the spiral fishing line guide RG is slightly separated from the tip of the holder 12S, but the reinforcing layer extends from the rear end to the terminal end of the fishing line guide outside the rod body 12H. HK2 is integrated. As described above, the reinforcing layers H are respectively provided on the rod pipes at the end portions before and after the spiral fishing line guide.
Since K1 and HK2 are continuous, the area where there is no rod pipe reinforcing effect due to the integration of the fishing line guide can be reinforced by each reinforcing layer, and the rigidity can be balanced over the entire rod pipe, and a high-strength rod pipe can be obtained. Can be provided.

The thickness t2 ', which is the sum of the thickness of the rod portion 12H at the base and the height of the fishing line guide, is equal to the thickness t at the tip.
2 and more than the thickness t4 of the joint 12T. When the height of the fishing line guide is almost the same,
It is preferable that the thickness t2 'is formed to be at least 1.15 times the thicker one of the thicknesses t2 and t4. More preferably, it is 1.25 times or more. The formation region of the original reinforcing layer HK2 is formed to be even thicker than the thickness t2 '.

As described above, even when the fishing line guide is provided, the rigidity of the rod pipe can be generally increased toward the original side, and the rigidity of the entire rod pipe can be balanced, thereby locally reducing the rigidity and reducing the strength. Is prevented, smooth bending is obtained and rod strength is improved. In addition, the rod pipe body 12H integrated with the fishing line guide has an inner taper ratio of 2/100.
Since it is very loose as 0 or less, the reinforcing fibers of the rod pipe main layer are prevented from meandering or disturbed by the pressure and heating of the rod pipe during the integral formation of the fishing line guide, so that locally low strength portions are generated. It also prevents things.

FIG. 17 shows a comparison of a fishing line guide and the like at the base and the front of the rod tube main body 12H. Conventionally, in the case where the spiral fishing line guide RG is integrally formed so as to protrude inside the rod pipe, the fishing line guide is formed to have a certain height and width due to manufacturing conditions such as the use of a tape-shaped material. With this, consideration of rod pipe strength such as stress concentration at the fishing line guide integrated part,
There is room for improvement in the fishing line guiding performance.

Although not limited to a spiral shape, the pitch of the fishing line guide is formed to be 25 mm or less. It is preferable that the width of the fishing line guide RG be large in consideration of mainly serving as reinforcement of the rod tube. It is preferable that the height be increased at a portion where the bending curvature of the rod pipe is large, since the fishing line hardly comes into contact with the inner surface of the rod pipe.
The portion having a large bending curvature may be the leading portion or the original portion of the rod tube depending on the position of the rod tube in the entire fishing rod in the connecting rod. In addition, a fishing line introduction part is formed at the front end of the large diameter rod pipe, and a splicing part is formed immediately before it. When the small diameter rod pipe is spliced here, the fishing line on the base side of the small diameter rod pipe is formed. When the guide is configured to be high, the fishing line hardly comes into contact with the inner surface of the large-diameter rod pipe, which is preferable. It is desirable to change the size and the like of the fishing line guide depending on each of these conditions. In that sense, the thickness of the rod tube main body 12H is
1 is formed thinner than the original side t1 ', and under the condition that the bending curvature on the front side of the rod main body is larger than the original side, the height of the fishing line guide RG is such that the front side h2 is higher than the original side h2'. Make it higher.

Considering the reduction of the fishing line resistance and the wear resistance, the fishing line guide is high and is preferably formed widely. When it is desired to make the fishing line guide on the original side of the rod tube larger than the front side under various conditions as described above, the concentration of stress at the front and rear parts of the guide by integrating this large fishing line guide is prevented, From the viewpoint of the inherent strength maintenance and rigidity balance maintenance of maintaining the rigidity balance by increasing the rigidity of the side portion from the front side portion, the thickness of the rod tube main body 12H is set to the original side from the front side. It is indispensable to increase the thickness, and the thickness obtained by adding the thickness of the rod pipe main body and the thickness of the fishing line guide is larger than the front side by 1.5 times or more, preferably 1.7 times or more. Form. As a result, a rod tube having excellent strength retention and rigidity balance can be obtained. Also, the deflection balance is improved.

As in the case of the head rod 16 in FIG. 1, the second rod 14, and the first rod 12, the former is used as the front rod and the latter is used as the former rod. Preferred forms and material relationships are shown below. Front side Original side Fishing line guide spacing Small Large Spiral direction angle Near the longitudinal axis of the rod Far height (cross-sectional area) Low (Small) High (Large) Material Elastic coefficient Low elasticity High elasticity Wear resistance Low High Others Integral with pipes Removable to rods or smooth surface without guide

Since the tip side is largely bent, if the distance between the fishing line guides is reduced, the fishing line is received by the fishing line guide even if it is bent, and is prevented from contacting the inner surface of the rod pipe, so that the fishing line resistance can be reduced. It is. It is necessary to reduce the thread resistance by discharging the water that has entered the inside of the small-diameter front-end rod pipe, and since the bending rigidity of the rod pipe body is inherently small, set the rigidity not to be high. Need
For this reason, it is preferable to incline in the axial direction. Is a guide conforming to the small diameter of the front rod, so that the fishing line is easy to penetrate, and the weight is light and the weight is prevented. The reason is that, as described in the above, since the front rod has inherently low flexural rigidity, it is not increased.

In this case, if a large load is applied, the rear portion of the front rod tube, that is, the original rod tube is bent with a large curvature, and the front rod tube is directed straight downward, so that it is difficult to be rubbed by a large force. ,
Conversely, the original rod pipe does not go down, and is rubbed against the fishing line in a bent state, so that it needs to have high wear resistance. At small loads, wear is of little concern. Then, maintenance such as replacement becomes easy on the original side. By combining one or more of the above, a fishing line guide having various advantages such as reduction of fishing line resistance and improvement of durability is formed.
For each of the above, the configuration may be reversed. For example, when the inner diameter of the front rod is relatively large, the reverse configuration can be adopted. This structure is suitable when the front side is strongly drained and water does not want to enter the original side.

When a load equivalent to the standard target fish of the fishing rod is applied, the fishing rod is more abrasion-resistant than the fishing line guides arranged before and after it at and near the most bent portion (having a large curvature) of the fishing rod. It is advisable to provide a fishing line guide formed of excellent members. Also, in terms of shape, if the contact area of the fishing line is increased, such as wide or trapezoidal, the durability is improved, and the durability of the fishing line guide of the entire fishing rod can be balanced.

Further, as shown in FIG. 18, (a) is a front rod, and (b) is a former rod. The left side of the figure is the tip direction. In the case of (a), the inside diameter of the rod pipe is small, and the cross-sectional shape of the fishing line guide RG is mainly formed by the steeply inclined surface S1 on the front side and the gently inclined surface S2 on the rear side. In the case of A, it is possible to send the fishing line without reducing its feeding energy while receiving the fishing line on the gentle slope S2 and pushing it toward the center. On the other hand, in the case of the drawing direction B, the fishing line is wiped so as to be handled on the side of the steeply inclined surface S1, so that drainage is improved. In the case of (b), there is no particular directionality, but since the inner diameter of the rod is large, there is almost no need to consider the extension as shown in (a) when compared with the rod at the leading end. This is because the draining is performed on the front side, so that the consideration at the time of drawing in as shown in FIG.

FIG. 19 shows a method of forming a fishing line guide RG ′ (FIG. 20) together with a rod pipe main body layer forming prepreg or the like at the time of forming the main body layer. In this method, there is no need to separately prepare a fishing line guide, so that material costs and man-hours can be reduced. Therefore, it is suitable for an inexpensive fishing rod. The tape 52 'made of a heat-resistant material as described above is wound around the core metal 50 while partially overlapping in the width direction. Apply a highly viscous liquid release agent to the depressions TB thus formed and dry it, or apply a temporary fixing resin or paint and then dry it, and then apply a release agent on top. Then, the depression becomes a curved surface and the surface thereof is coated with a release agent. A prepreg HSP for forming a main body layer is wound from above, and is heated and molded while being pressed with a tightening tape or the like, and together with the molded tape 52 ', a release agent, a resin for temporary fixing, and the like are removed from the inside of the rod tube.

As a result, a rod tube integrated with the fishing line guide RG ′ having the cross-sectional shape shown in FIG. 20 is formed. As described above, the top portion TB 'of the fishing line guide RG' is formed in a curved shape without any corner as a result of the formation of the depression TB in a curved shape. Therefore, even if the fishing line comes into contact with the fishing line, the fishing line is not damaged, and the fishing line resistance can be reduced. In addition, in order to form the protruding side of the fishing line guide into the rod tube into a curved surface, the thick tape 52 'made of the above-mentioned heat-resistant material is applied, for example, to the tape 52' shown in FIGS.
(C) A concave portion is formed as shown in FIG. 3 (c), and the concave portion is wound around a metal core so that the concave side is on the outside, and is covered with a material such as prepreg from the outside, or a resin or other fishing line guide material is formed into a desired shape. If a prepreg for forming a rod tube is wound around the outside and pressurized and heated, a fishing line guide having a desired cross-sectional shape can be formed (the tape will be removed later).

Except for the dimensional relationship of the storage, the above description of the present application is applicable even if the joint is a splicing other than the spout, a spigot splicing, or a reverse splicing. In addition, each of the explanation structures may be used alone, or some of them may be appropriately combined, which is optional.

[0070]

As is apparent from the above description, according to the present invention, even when a fishing line guide is provided inside, a through fishing rod having high strength and rigidity balance and having a smooth bending of the fishing rod can be provided. According to the first aspect, since the inner diameter of the fishing line guide is made larger than the inner diameter of the joint portion, the small diameter rod pipe can be accommodated inside the large diameter rod pipe in the case of the swing-out type.

[Brief description of the drawings]

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

FIG. 2 is an enlarged longitudinal sectional view of a main part of FIG.

FIG. 3 is another longitudinal sectional view replacing FIG. 2;

FIG. 4 is a diagram showing an example of a form of a joining portion;

FIG. 5 is a view of another embodiment of a fishing rod.

FIG. 6 is a view showing another form of the joint portion.

FIG. 7 is a diagram of an example of a swing-out type joint.

FIG. 8 is an explanatory diagram showing a relationship between a fishing line guide and a main body layer.

FIG. 9 is a perspective view of a fishing line guide.

FIG. 10 is an explanatory diagram showing a relationship between a fishing line guide and a main body layer.

FIG. 11 is an explanatory diagram of a relationship between a fishing line guide and a main body layer.

FIG. 12 is an explanatory diagram of a method of integrally forming a fishing line guide and a main body layer.

FIG. 13 is a sectional view of a rod tube formed by the method of FIG.

FIG. 14 is a sectional view of a rod tube formed by the method of FIG. 12;

FIG. 15 is a vertical sectional view of a rod pipe.

FIG. 16 is another vertical sectional view of a rod pipe.

FIG. 17 is a diagram for explaining the difference in the size of the fishing line guide depending on the front and rear positions in the rod pipe.

FIG. 18 is a diagram showing a difference in a fishing line guide due to a difference in the position of a rod tube.

FIG. 19 is a diagram illustrating a method of manufacturing an economy type fishing rod guide-equipped rod pipe.

FIG. 20 is a vertical sectional view of a partial rod tube manufactured by the method of FIG. 19;

FIG. 21 is a cross-sectional view of a tape for forming a fishing line guide.

[Explanation of symbols]

 12H Rod body 12KT Rear end joint 12S Taper 12T Joint H1, H2, HK Reinforcement layers RG, RG2 Fishing line guide

Claims (2)

[Claims] 1. A front tapered portion is formed immediately after a joint portion of a tip portion of a rod tube, and a rear portion of the tapered portion is a straight or a gradually tapered rod tube body portion having a narrow front portion. A fishing line guide is disposed protruding inside the rod tube main body, and an inner diameter of the fishing line guide is larger than an inner diameter of the joining portion, and extends from the joining portion to at least a most distal end position of the fishing line guide. A through fishing rod comprising a reinforcing layer for reinforcing a main body layer. 2. A fishing line guide is formed integrally with the inside of a rod tube, and a reinforcing layer for reinforcing a main body layer from a joint at a rear end portion of the rod tube to at least a rearmost position of the fishing line guide is provided. A through fishing rod characterized by being provided.