JP2011188751A - Fishing rod - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fishing rod, which bends smoothly like drawing an arc when a fish bites the hook, which relaxes stress concentration and which makes it easy to create bamboo joints. <P>SOLUTION: In the original rod 1, a rod tip side bulging part 2 located in the rod tip side and a rod base side bulging part 3 located in the rod base side are formed. The rod base side end surface of the rod tip side bulging part 2 and the rod tip side end surface of the rod base side bulging part 3 form slopes toward and approach each other. A ring-shaped recessed groove 4 which enters the approaching position to the rod core side is formed. The ring-shaped recessed groove 4 is formed along the slope b, which inclines to the vertical plane a which intersects perpendicularly with the rod axis X, around the peripheral surface of the bulging parts, and the bulging parts are formed of nonwoven fabric prepreg. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a fishing rod in which a bamboo knot-like pattern portion (hereinafter referred to as a bamboo knot) is formed at an intermediate position of the rod body in order to exhibit the tone of the bamboo rod having both flexibility and strength.

  In order to form bamboo shoots in the frame, a resin coating or the like is raised at an intermediate position of the frame to form a bulge, and along the circumference of the bulge, the surface perpendicular to the axis of the ridge Assuming an inclined surface, a stepped portion extending along the inclined surface is formed to form a bamboo knot (Patent Document 1).

JP 2002-225148 A (paragraph number [0024] and FIG. 1)

As described above, in the portion where the stepped portion is formed, there is a large difference in the outer diameter between the bottom of the stepped portion and the top of the stepped portion, so that the difference in rigidity between the bottom and the top becomes too large. Then, in this stepped portion, the continuity of rigidity is impaired, and it is difficult to draw a smooth arc when the fish catches and the shark bends, and the stepped portion is bent. There was a risk of bending.
In addition, since the top and bottom of the stepped portion are corners that are nearly perpendicular, when the folds are bent, stress concentration tends to occur at the corners, causing a problem in strength. .

Furthermore, since the bulging portion is formed of a resin paint or the like, there are the following problems. (1) Although the bulging part was formed by raising resin paint etc., it was difficult to raise paint etc. to a fixed shape.
(2) Even if the resin coating is raised to form the bulge portion, the adhesion between the bulge portion and the casing is poor.
(3) Instead of resin paint, reinforced fibers such as carbon fibers are aligned, and the bulging portion may be formed by a prepreg in which the aligned reinforcing fibers such as carbon fibers are impregnated with a thermosetting resin such as epoxy. However, in that case, the rigidity of the bulging portion becomes too high, and when the load is applied, it does not bend smoothly as a fishing rod.

  The purpose of the present invention is to create a smooth bend when the fish is hooked, and even when the bend occurs, the adhesion is good, cracks are difficult to occur, stress concentration can be reduced, and Therefore, the present invention is to provide a fishing rod that can ensure the stability of the shape as a bamboo knot pattern and is easy to make when making a bamboo knot.

〔Constitution〕
The characteristic configuration of the invention according to claim 1 is a bulge comprising a heel side bulging portion located on the heel side and a heel side bulging portion located on the heel side at an intermediate position in the axial direction of the housing. A heel-side end surface of the heel-side bulging portion and a heel-side end surface of the heel-side bulging portion are adjacent to each other while inclining toward the other side, and are An annular recessed groove is formed that enters toward the axis side, and the annular recessed groove extends around the circumferential surface of the bulging portion in a state along an inclined surface that is inclined with respect to a vertical plane orthogonal to the vertical axis. The bulging portion is formed by a nonwoven fabric prepreg in which a nonwoven fabric is impregnated with a matrix resin, and the function and effect thereof are as follows.

[Action]
By forming an annular recessed groove at the tip side bulge portion and the heel side bulge portion and the boundary position between them, a portion resembling bamboo shoots can be formed, and the fishing rod can be felt like a bamboo shoot Can be operated.
In addition, by forming the annular recessed groove, a difference in rigidity occurs due to the difference in outer diameter with respect to the maximum protruding portion (top portion) protruding in the radial direction of the tip side bulged portion.
However, the ring-shaped recessed groove is arranged so that the heel-side end surface of the heel-side bulged portion and the heel-side end surface of the heel-side bulged portion are close to each other while being inclined toward each other. By forming in a state of entering toward the core side, the rigidity gradually changes from the point where the heel side end surface and the heel side end surface gradually decrease in diameter toward the annular recessed groove.
As a result, the rigid connection is unlikely to change greatly, and it can be expected that the fishing rod will produce a smooth bend that draws an arc when the fish catches.

Moreover, the annular recessed groove is formed around the peripheral surface of the bulging portion in a state along an inclined surface inclined with respect to a vertical plane orthogonal to the vertical axis.
As a result, the annular recessed groove is positioned without deviation in the vertical axis direction compared to the case where the annular concave groove is simply formed along the vertical plane perpendicular to the vertical axis, thereby suppressing a rapid change in rigidity. Can do.

On the other hand, not the reinforcing fiber prepreg but a nonwoven fabric prepreg such as polyester was used to form the bulging portion.
As a result, compared to forming the bulging portion with a paint or the like, when the bulging portion is raised and formed, the raised shape can be easily formed and hardly collapsed. In addition, the adhesion to the housing is further improved, and the bulging portion is not too rigid compared to the case where the bulging portion is formed by a reinforced prepreg such as carbon fiber, and even when a load is applied. It tends to be a smooth bend as a fishing rod.
Furthermore, since it is reinforced with nonwoven fabric fibers such as polyester fibers, cracks and the like are less likely to occur at the bulging portion even when a load is applied.

〔effect〕
When a fish catches a needle, it produces a smooth bend that creates an arc, and even when the bend occurs, the adhesion is good, cracks are difficult to occur, stress concentration can be relaxed, and We have provided fishing rods that can ensure stability and are easy to make when making bamboo shoots.

〔Constitution〕
According to a second aspect of the present invention, a chamfered portion is formed in a portion including a heel-side maximum projecting portion projecting radially outward of the heel-side bulged portion, and the heel-side bulged portion A chamfered portion is formed in a portion including the heel side maximum protruding portion that protrudes in the radial direction of the portion, and the curvature radius of the chamfered portion of the portion including the heel side maximum protruding portion is set to the heel side maximum protruding portion. The radius of curvature is larger than the radius of curvature of the chamfered portion of the portion including, and the effects thereof are as follows.

[Function and effect]
Since the chamfered portion is formed at the maximum protrusion of each of the heel-side bulge and the heel-side bulge, a large stress concentration occurs even if the fishing rod is bent due to a load. hard.
In addition, since the radius of curvature of the chamfered portion of the portion including the heel-side maximum protruding portion is formed to be larger than the radius of curvature of the chamfered portion of the portion including the heel-side maximum protruding portion, a configuration similar to a bamboo knot It becomes possible to reveal the supple bends of bamboo baskets.

〔Constitution〕
The characteristic configuration of the invention according to claim 3 is that the heel side end surface and the heel side end surface have an arc shape that bulges in a direction close to each other, and the operational effects thereof are as follows. is there.

[Function and effect]
In other words, since the heel-side end surface and the heel-side end surface facing the mating side have an arc shape that swells toward the mating side, the fishing rod is easy to flex with less stress concentration than when it is inclined linearly. It was made as a erection body.

〔Constitution〕
According to a fourth aspect of the present invention, there is provided a recess portion extending along the collar axis direction at one circumferential direction of the tip side bulging portion, and the circumferential direction of the annular recess groove Is adjacent to one end of the indented portion extending in the axial direction, and the other portion located on the opposite side of 180 ° across the shaft core in the annular recessed groove is the presence side of the indented portion. Is that the annular recessed groove is formed in an inclined state so as to reach the opposite side of 180 ° across the shaft core, and the effects thereof are as follows.

[Function and effect]
The indented part is made by imitating the bamboo sprout part. By forming this hollow part, in the tip side bulge part, there exists a small-diameter part in one place in the circumferential direction as compared with other parts. Then, there is a possibility that the weight balance or the cross-sectional area balance is lost in either the left or right or top and bottom directions across the saddle axis, and the bending when a load is applied may not be smooth.
Therefore, by arranging an annular groove on the opposite side of 180 ° from the side where the hollow is located, the balance of weight balance and cross-sectional area can be improved and a smooth bending can be expected. I was able to provide.

〔Constitution〕
In the characteristic configuration of the invention according to claim 5, the bulging portions are formed at two or more positions along the heel axis direction of the skeleton, and the heel side formed at each bulging portion is located. In the heel side bamboo shoot and the heel side bamboo shoot located on the heel side, the depression formed on the heel side bamboo shoot and the depression formed on the heel side bamboo shoot are 180 ° in the circumferential direction. The annular recessed groove formed on the heel side bamboo joint and the annular recessed groove formed on the heel side bamboo joint are formed 180 degrees apart from each other in the circumferential direction. The operational effects are as follows.

[Function and effect]
While maintaining the positional relationship between the recess and the annular recess groove, between the bulges formed at two or more axial directions of the casing, the recess and annular recess formed on the tip side bamboo knot The groove and the annular recess groove formed on the heel side bamboo knot with respect to the groove are formed so as to be shifted from the position shifted by 180 ° in the circumferential direction of the heel, thereby forming a dent with the axis of the heel sandwiched therebetween. The load balance and the cross-sectional area are less likely to be lost in either the left, right, or top direction across the saddle axis. The bend when it is applied becomes smooth.

It is a side view of a spatula pot. It is a side view of a bamboo section. It is a top view of a bamboo section. It is a perspective view of a bamboo joint part. It is the vertical side view which sectioned the hollow part of the bamboo joint part. It is a vertical side view which shows the annular recessed groove part of a bamboo joint part.

[First Embodiment]
As shown in FIGS. 1 and 4, the fishing rod A is a spatula fishing rod, and is provided with a grip portion 1 </ b> A on the base rod 1 as a rod body, and bamboo sticks at two points on the tip side of the grip portion 1 </ b> A. B is formed, and the bamboo joint B is formed by the heel side bulging portion 2 and the heel side bulging portion 3.

Each rod constituting the fishing rod A is manufactured as follows. That is, reinforced fibers such as carbon fibers are aligned in one direction, and the aligned reinforced fiber group is impregnated with a thermosetting resin (or thermoplastic resin) such as epoxy to form a prepreg sheet. A prepreg sheet cut into a predetermined shape is wound around a mandrel, and a multi-layered one wound around a mandrel is placed in a furnace and baked. The material is taken out, and the bag material is cut into a predetermined length, and finish processing is performed to form a frame.
As the reinforcing fiber constituting the prepreg, glass fiber, aramid fiber, alumina fiber, etc. can be used in addition to carbon fiber, and as the resin, thermosetting resin such as phenol resin and polyester resin, and thermoplastic such as PV (E). Resin can be used.

The tip side bulging portion 2 of the bamboo section B will be described.
As shown in FIGS. 2 to 4, the heel-side bulging portion 2 is formed in a radially bulging state on the outer peripheral surface at an intermediate portion in the axial direction of the main rod 1. A heel side maximum protrusion 2a having a large outer diameter is formed on the side close to the heel side, and on the heel side of the heel side maximum protrusion 2a with the heel side maximum protrusion 2a as a boundary. A long frustoconical portion 2A having a skirt that gradually decreases in diameter toward the heel side, and a short skirt having a skirt that gradually decreases in diameter toward the heel side toward the heel side of the maximum protrusion 2a on the heel side. A truncated cone portion 2B is formed.

  As shown in FIGS. 2 to 4, the short frustoconical portion 2 </ b> B has an arc shape that bulges toward the short frustoconical portion 3 </ b> B of the heel side bulging portion 3, which will be described later, which faces the other side. Presents. The tip side maximum protrusion 2a formed between the long truncated cone part 2A and the short truncated cone part 2B is composed of an outer circumferential surface of the long truncated cone part 2A and an outer circumferential surface of the short truncated cone part 2B. It is a chamfered part that connects with a smooth curve.

The heel side bulging portion 3 will be described.
As shown in FIG. 2, the heel side bulging portion 3 is formed on the heel side of the above-described heel side bulging portion 2 so as to bulge in the radial direction on the outer peripheral surface of the heel 1. . A heel side maximum protrusion 3a having a large outer diameter is formed on the side close to the heel side, and the heel side of the heel side maximum protrusion 3a is located at the base side of the maximum side protrusion 3a. The long truncated cone portion 3A having a gradually reduced diameter toward the base and a long bottom portion, and the short truncated cone shape having a gradually reduced diameter toward the tip side toward the tip side of the maximum protrusion portion 3a on the base side and a short base. Part 3B is formed.

As shown in FIGS. 2 to 4, the short frustoconical portion 3 </ b> B has an arc shape that bulges toward the short frustoconical portion 2 </ b> B of the heel side bulging portion 2 that is facing outwardly. Yes. The long frustoconical portion 2A on the heel side has a gentler inclined surface than the long frustoconical portion 3A on the heel side. The short frustoconical portion 2B on the heel side has a gentler inclined surface than the short frustum-shaped portion 3B on the heel side.
Accordingly, it is formed between the base side maximum protrusion 3a formed between the long truncated cone part 3A and the short truncated cone part 3B, and between the long truncated cone part 2A and the short truncated cone part 2B. A chamfered portion is formed on each of the heel-side maximum protrusions 2a. However, the heel-side protrusion 2a has a chamfered portion that exhibits a gradually changing state with a larger radius of curvature.

The bulging portion composed of the heel-side bulging portion 2 and the heel-side bulging portion 3 is formed by winding a prepreg made of a nonwoven fabric such as polyester.
A non-woven prepreg sheet is formed by impregnating a sheet-like non-woven fabric formed by tangling fibers such as polyester without weaving them with a thermosetting resin such as polyester. The nonwoven fabric prepreg sheet is overlaid to fire the bulge prototype at an intermediate position of the casing, and then subjected to processing such as grinding to form the heel-side bulge 2 and the heel-side bulge as described above. 3 is formed.
As the reinforcing fiber constituting the prepreg, glass fiber, aramid fiber, alumina fiber, etc. can be used in addition to carbon fiber, and as the resin, thermosetting resin such as phenol resin and polyester resin, and thermoplastic such as PV (E). Resin can be used.

Adopting a nonwoven fabric prepreg has the following advantages.
In other words, the adhesion to the housing is further improved compared to the formation of the bulging portion with the above-described paint or the like, and the bulging portion is compared with the case where the bulging portion is formed with a reinforced fiber prepreg such as carbon fiber. The rigidity does not become too high, and even when a load is applied, it tends to bend smoothly as a fishing rod.
Furthermore, since it is reinforced with nonwoven fabric fibers such as polyester fibers, cracks and the like are less likely to occur at the bulging portion even when a load is applied.

The annular recessed groove 4 will be described.
As shown in FIGS. 2 to 6, the short truncated cone part 2 </ b> B as the heel side end face of the heel side bulging part and the short truncated cone part 3 </ b> B as the heel side end face of the heel side bulging part, Are adjacent to each other while inclining toward the other side, and an annular recessed groove 4 is formed in the adjacent position so as to enter toward the shaft core side.
The annular recessed groove 4 is formed around the peripheral surface of the bulging portion in a state along the inclined surface b inclined with respect to the vertical surface a orthogonal to the vertical axis. The inclination angle θ of the inclined surface b with respect to the vertical surface a is preferably selected within a range of 10 ° ± 5 °.

As the manufacturing method of the annular recessed groove 4 described above, after forming the bulging portion, as shown in FIGS. 2 and 6, the short truncated cone portion as the heel side end surface of the tip side bulging portion 2 is used. Grinding is performed with an inverted chevron-shaped cutting blade formed by 2B and the short truncated cone portion 3B as the heel-side end surface of the heel-side bulged portion 3.
Then, as shown in FIG. 6, the bottom portion 4 a of the annular recessed groove 4 is a thin groove that is slightly chamfered. Since the bottom portion 4a of the annular recessed groove 4 is thus chamfered, stress concentration is unlikely to occur.

  The hollow part 5 is demonstrated. As shown in FIG. 3, the dent portion 5 imitates the mark of a natural bamboo bud and is formed in a shape close to a spindle shape as shown. In order to form this hollow portion 5, after forming the bulging portion, after forming the heel side bulging portion 2, the heel side bulging portion 3 and the annular recessed groove 4 therebetween, an end mill is used. Formed. About the hollow part 5, in order to distinguish clearly from the other part of the tip side bulging part 2, it makes a coating color different.

Specifically, the end mill is ground from the tip side of the tip side bulging portion 2 for grinding. In the hollow portion 5, a heel side inclined surface 5A is formed on the heel side, and a heel side inclined surface 5B is formed on the heel side, and the heel side inclined surface 5A and the heel side inclined surface 5B are formed. The space is deepest, and as shown in FIG. 5, the bottom is closest to the outer peripheral surface of the cocoon material of the former fence 1.
The upper end 5b of the heel side inclined surface 5B is located higher than the bottom portion 4a of the annular recessed groove 4, and the recessed portion 5 is not in communication with the annular recessed groove 4.
In addition, the shape of the hollow part 5 is not limited to what was mentioned above, It is not necessary to form inclined surface 5A, 5B, and a flat surface may be sufficient as a bottom face.

  As shown in FIG. 2, the positional relationship between the annular recessed groove 4 and the recessed portion 5 is such that the annular recessed groove 4 is in the recessed portion 5 with respect to the recessed portion 5 formed in the tip side bulged portion 2. Is formed along the periphery of the bulging portion starting from the upper end 5b of the heel base side inclined surface 5B, and on the opposite side of 180 ° across the shaft core X of the skeleton body, It is formed in a state of being inclined at an inclination angle θ so as to be located just on the opposite side of the recess 5.

The configuration of the bamboo section B described above has been described with respect to the bamboo section B1 located on the heel side close to the grip portion 1A of the base fence 1. However, in the bamboo section B2 positioned on the heel side, the annular recess groove 4 is as follows. And the arrangement position of the hollow part 5 differs.
That is, as shown in FIG. 1, in the bamboo joint B2 located on the heel side, the formation position of the hollow portion 5 is 90 ° in a phase along the circumferential direction compared to the case of the bamboo joint B1 located on the heel side. It is formed at a position shifted in a range of ˜180 °. Correspondingly, the annular recessed groove 4 is also formed from the base side of the recess portion 5 along the peripheral portion, and is positioned on the opposite side to the recess portion 5 on the opposite side of 180 ° across the shaft axis X. It is formed in a state inclined to the tip side.

  As described above, since the formation phase of the hollow portion 5 is different between the tip side bamboo joint B2 and the tip side bamboo joint B1, as shown in FIG. 1, when the fishing rod A is viewed from the side, an annular recess is formed. The inclination direction of the groove 4 is set to be opposite.

[Another embodiment]
(1) The angle of the inclined surface b along the circumferential portion of the annular recessed groove 4 can be selected within a range of 10 ° ± 5 °, but is not limited to this angle of inclination, and can be changed according to specifications. Is possible.

(2) As the annular recessed groove 4, when the angle of the inclined surface b is determined, the annular recessed groove 4 is all located on the inclined surface b specified by the angle. There is no slight deviation.

(3) In the above-described embodiment, the protrusion height between the heel-side maximum protrusion 2a and the heel-side maximum protrusion 3a is such that the heel-side maximum protrusion 3a has a smaller curvature radius than the protrusion height. However, the radius of curvature of the heel-side maximum protrusion 2a and the heel-side maximum protrusion 3a may be set to the same diameter to make the protrusion heights the same. Alternatively, the protrusion height of the heel-side maximum protrusion 2a and the heel-side maximum protrusion 3a is such that the heel-side maximum protrusion 2a has a smaller radius of curvature than the heel-side maximum protrusion 3a. The protrusion height of the front side maximum protrusion 2a may be increased.

  The present invention is mainly used for a spatula or the like.

1 Genroku
1A Grip part 2 Tip side bulge part 2A Long truncated cone part 2B Short truncated cone part
2a Tip side maximum projecting part 3 Base side bulging part 3A Long truncated cone part 3B Short truncated cone part
3a heel side maximum protrusion 4 annular recess groove 4a bottom part 5 dent B1 heel side bamboo joint B2 heel side bamboo joint a vertical plane b inclined surface X vertical axis

Claims (5)

  Forming a bulging portion comprising a heel-side bulging portion located on the heel side and a heel-side bulging portion located on the heel side at an intermediate position in the axial direction of the skeleton, An annular recess groove into which the heel side end surface of the part and the heel side end face of the heel side bulging part come close to each other while inclining toward the other side, and enter the axial side toward the adjacent position And forming the annular recessed groove around the peripheral surface of the bulging portion in a state along an inclined surface inclined with respect to a vertical plane orthogonal to the vertical axis, and the bulging portion is formed in a matrix on the nonwoven fabric. A fishing rod housing formed by a nonwoven fabric prepreg impregnated with resin.   A heel that forms a chamfered portion in a portion including a heel-side maximum protruding portion that protrudes in a radial direction of the heel-side bulged portion and protrudes in a radially outward direction of the heel-side bulged portion. A chamfered portion is formed in a portion including the side maximum protruding portion, and a radius of curvature in a chamfered portion of the portion including the heel side maximum protruding portion is larger than a curvature radius in a chamfered portion of the portion including the heel side maximum protruding portion, 2. A fishing rod housing according to claim 1, wherein the fishing rod housing has a large radius.   The fishing rod rod body according to claim 1 or 2, wherein the rod-side end surface and the tip-side end surface have an arcuate shape that bulges in a direction close to each other.   A recess extending in the axial direction is provided at one circumferential position of the heel-side bulging portion, and a part of the annular recess groove in the circumferential direction extends in the axial direction of the recess. The other part that is adjacent to the stretched one end and that is located on the opposite side of 180 ° across the shaft core in the annular recessed groove is on the opposite side of 180 ° across the shaft core from the side where the hollow portion is present. The fishing rod housing according to any one of claims 1 to 3, wherein the annular recessed groove is formed so as to be inclined.   The bulging part is formed at two or more positions along the cocoon axis direction of the skeleton, and the heel side bamboo shoots located at the heel side and the heel side formed at each bulging part In the heel side bamboo shoots, the dents formed in the heel side bamboo shoots and the dents formed in the heel side bamboo shoots are formed at positions shifted from each other by 180 ° in the circumferential direction. The fishing rod housing according to claim 4, wherein the annular recessed groove formed in the leading bamboo joint and the annular recessed groove formed in the proximal bamboo joint are formed so as to be shifted from each other by 180 ° in the circumferential direction. .

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