JP7165520B2 - Joint structure of fishing rod - Google Patents

Description

According to the present invention, the rod tip side rod body and the rod base side rod body are brought into contact with each other by pressure contact between the rod base end side mating portion of the rod tip side rod body and the rod tip side mating portion of the rod base side rod body. The present invention relates to a fishing rod joint structure capable of being switched between a fixed state in which the operating state is fixed and an unfixed state in which the pressure contact state is released and separated into a non-fishing operation state.

As such a joint structure of a fishing rod, there is a structure that adopts the following configuration. That is, a rod end side mating portion is formed at the rod base end portion of the tip rod as the rod tip side rod body, and a rod tip side mating portion of the tip holding rod as the rod base side rod body is formed, and then spliced in reverse parallel. There was one that constituted a pole (Reference 1).

Japanese Unexamined Patent Application Publication No. 2002-112670 JP 2015-100348 A

In this one, the inner peripheral surface of the joint on the rod end side of the tip rod is lined with a relatively thick prepreg sheet, and the reinforcing fibers of this reinforcing prepreg sheet are aligned in the circumferential direction. It was set to something.
On the other hand, in the head holding rod, although such a reinforcing prepreg sheet is not wound around the outer peripheral surface of the rod tip side joint portion, there are a plurality of main prepreg sheets having the length of the rod body constituting the head holding rod itself. Since it is wound in layers, the direction of the reinforcing fibers at the joint on the rod tip side is the direction of the reinforcing fibers of the main prepreg sheet, and it is aligned in the axial direction of the rod or in the circumferential direction. It is considered that they are aligned (Patent Document 1).

In the case of the above-described configuration, since the reinforcing prepreg sheet is applied, the strength can be sufficiently increased against bending of the rod, etc., but there is one problem. That is, when the tackle is cast, if the pressure contact between the joint on the base end side and the joint on the pole tip side is loose, the tip rod may pop out and separate from the tip holding rod.
On the other hand, in order to solve this problem, if the surface accuracy of both joints is further improved by using reaming or centerless processing, this time it will be too tight, and when you have finished fishing and have to prepare for closing. , The tip pole could not get out of the homochi pole, and it was also happening that it was difficult to finish processing.

However, there are some rods that employ a main prepreg sheet in which reinforcing fibers are inclined with respect to the axis of the rod as the main prepreg sheet wound around the mandrel. In this one, the small-diameter side rod body is a solid rod-shaped body, and a bundle of a large number of reinforcing fibers aligned in the rod axis direction is impregnated with resin and hardened, and the surface is along the rod axis direction. Reinforcing fibers are exposed (Patent Document 2).

In this way, when the reinforcing fibers of the small-diameter side rod body are aligned in the direction of the rod axis, it is not possible to prevent the tip rod from popping out as described above, and adhesives are also applied. there is Then, as described above, the problem that the sticking state cannot be released during the closing process has not been solved.

An object of the present invention is to prevent the so-called ``slip slipping phenomenon'' in which the rod tip side rod body slips from the rod base side rod body even when the tackle or the like is transferred during the fishing operation, and the closing process is performed. To provide a joint part of a fishing rod capable of easily separating a rod tip side rod body and a rod base side rod body when preparing to return.

〔Constitution〕
The characteristic configuration of the invention according to claim 1 is that the rod tip side rod body and the rod base side rod body are aligned with the rod base end side mating portion of the rod tip side rod body and the rod tip side of the rod base side rod body. By relatively rotating the part in one direction, the pressure contact state between the rod base end side mating portion of the rod tip side rod body and the rod tip side mating portion of the rod base side rod body is tightened and the pressure contact state is fixed. By relatively rotating the fixed state for the fishing operation state and the rod base end side mating portion of the rod tip side rod body and the rod tip side mating portion of the rod base side rod body in the direction opposite to the one direction. It is possible to switch to a non-fixed state in which the pressure contact state between the rod base end side mating portion of the rod tip side rod body and the rod tip side mating portion of the rod base side rod body is released and separated into a non-fishing operation state. and the surface of the rod base end side mating portion that is in pressure contact with the rod tip side mating portion is aligned with an inclination angle Θ of 45° ≤ Θ < 90°. A rod base end side prepreg having reinforcing fibers is arranged, and the surface of the rod tip side mating portion that is in pressure contact with the rod base end side mating portion is provided with a reverse tapered surface whose diameter decreases toward the rod base side, and the reverse tapered surface. A positive tapered surface whose diameter further increases from the base side toward the base side is formed, and the reinforcing fibers of the rod base end side prepreg are inclined on the surface of the rod tip side mating portion that is in pressure contact with the rod base end side mating portion. A rod tip side prepreg having reinforcing fibers aligned at an inclination angle Θ that matches the angle Θ is arranged, and the rod tip side prepreg is arranged in a certain range from the reverse tapered surface to the positive tapered surface. There is, and the effect is as follows.

[Action]
That is, since the reinforcing fibers on the surface of the rod base end side mating portion and the reinforcing fibers on the surface of the rod tip side mating portion are set in the same inclination direction, the reinforcing fibers of both mating portions have the same function as the thread. When both are relatively rotated in one direction, the pressure contact state of both mating portions is tightly tightened, and when they are relatively rotated in the opposite direction, they are loosened to the non-pressure contact side.
In particular, by setting the sandwiching angle Θ between the rod axis and the reinforcing fibers of the prepreg to 45° ≤ Θ < 90°, the reinforcing fibers of the prepreg are separated from the rod axis, that is, stand up from the rod axis. The meshing of the reinforcing fibers at both joints is improved.
As a result, during fishing operation, the fishing line guide is tightly tightened, the slipping phenomenon is suppressed, and circumferential deviation due to torque related to the fishing line guide is suppressed when the tackle is introduced. can be made easier.

〔effect〕
Therefore, by applying a slight relative rotation operation to the rod tip side rod body and the rod base side rod body, a fishing rod mating portion structure that can easily cope with both fishing operation and non-fishing operation is provided. We have reached the point where we can provide it.

〔Constitution〕
The rod tip side rod body and the rod base side rod body are fixed in a fishing operation state by a pressure contact state between the rod base end side mating portion of the rod tip side rod body and the rod tip side mating portion of the rod base side rod body. and a non-fixed state in which the pressure contact state is released and separated into a non-fishing operation state, and one surface of the rod base end side mating portion and the rod tip side mating portion is configured to be switchable. , a prepreg having reinforcing fibers aligned in a direction inclined with respect to the rod axis is arranged, and a sheet made of nonwoven fabric is arranged on the other surface of the rod base end side mating portion and the rod tip side mating portion. Further, the sandwiching angle Θ between the rod axis and the reinforcing fibers of the prepreg is set to 45°≦Θ<90°, and the effects are as follows.

[Effect]
Since one of them is a non-woven fabric, the meshing of both reinforcing fibers is not as great as in claim 1, but when the rod tip side rod body and the rod base side rod body are relatively rotated, the fitting state of the mating parts can be switched. is the same as in claim 1.
Therefore, by applying a slight relative rotation operation to the rod tip side rod body and the rod base side rod body, a fishing rod mating portion structure that can easily cope with both fishing operation and non-fishing operation is provided. We have reached the point where we can provide it.

〔Constitution〕
The characteristic configuration of the invention according to claim 2 is that the rod tip side rod body is a solid rod-shaped or hollow cylindrical small diameter tip side rod body positioned on the rod tip side, and the rod base side rod body is the rod base side. It is a hollow cylindrical large-diameter brush rod body located in
(a) A joint type rod body that creates a fixed state by fitting the rod base end side mating portion of the small diameter tip side rod body into the rod tip side mating portion of the large diameter tip holding rod body (b) ) A spigot joint type rod body in which the spigot joint core material is formed with an inclined outer peripheral surface at the rod base end side mating part, and the spigot joint core material is fitted to the mating part on the mating side to create a fixed state.
, and the effects are as follows.

[Effect]
Due to the structure of parallel jointed rods, reverse parallel jointed rods, and spigot rods, in order to fit the rod base end side joint part of the rod tip side rod body and the rod tip side joint part of the rod base side rod body, one side is used. It is a method of inserting and fitting to the other mating portion. For this reason, when the fitting force between the mating portions is weak, the ``snap-off phenomenon'' is likely to occur as described above.
However, as described above, the improvement is such that the direction of the reinforcing fibers is inclined with respect to the rod axis, and the sandwiching angle Θ between the rod axis and the reinforcing fibers of the prepreg is set to 45°≦Θ<90°. Therefore, it is possible to effectively suppress the occurrence of the 'slip-off phenomenon'. In addition, at the time of closing, the loosening operation can be performed only by relatively rotating the rod in the opposite direction.

〔Constitution〕
According to the characteristic configuration of the invention according to claim 3, an inclined outer peripheral surface is formed at the rod end side mating portion , and an inclined inner peripheral surface is formed at the rod end side mating portion ,
(a) A joint type rod body that creates a fixed state by fitting the rod base end side mating portion of the small diameter tip side rod body into the rod tip side mating portion of the large diameter tip holding rod body (b) ) A spigot joint type rod body in which the spigot joint core material is formed with an inclined outer peripheral surface at the rod base end side mating part, and the spigot joint core material is fitted to the mating part on the mating side to create a fixed state.
, and the effects are as follows.

[Effect]
In this way, since the inclined surface structure is introduced to the joint portion of both, the contact area of the joint portion of both is increased to improve the connection between the two. By introducing a configuration that pays attention to the direction of inclination, it is possible to further suppress the occurrence of the 'slip-off phenomenon'.
Furthermore, since an inclined surface structure is introduced, even if the angle of rotation is slight in the opposite direction, the contact surfaces of the two joints are immediately separated from each other. We have come to be able to provide

〔Constitution〕
According to the characteristic configuration of the invention according to claim 4 , the rod base end side mating portion and the rod tip side mating portion are set to a specific relative positional relationship between the rod tip side rod body and the rod base side rod body. and the indicator includes the rotation direction for recognizing the fixed state and the non-fixed state, and the effects are as follows. .

[Effect]
Since the index is provided in this way, the current relative positional relationship between the rod base side mating portion and the rod tip side mating portion can be visually observed immediately, and the fixed state or the non-fixed state can be easily created. .
From the point of being visible, it can be grasped by the presence of the guide, but if there is no guide near the rod base end side joint part and the rod tip side joint part, it is difficult to use the guide as an index.
In addition, if the direction of rotation with respect to the rod body is incorporated as an index when adjusting the fixed state, etc., it will be a very user-friendly and user-friendly design.

Fig. 1 (a) is a vertical cross-sectional side view of a parallel-connected rod showing a connecting portion between a rod base end side mating portion of a rod tip side rod body and a rod tip side mating portion of a rod base side rod body, and (b) a rod tip. FIG. 4 is a longitudinal side view showing a state before the side rod body and the rod base side rod body are connected; FIG. 2(a) is a partially cutaway side view showing a state before the rod tip side mandrel portion and the rod base side mandrel portion are connected, and (b) is a rod tip side mandrel portion and the rod base side mandrel portion. (c) is an exploded view showing the glass-reinforced fiber prepreg constituting the innermost layer, (d) is a side view showing the state in which the innermost layer is wound around the mandrel, ( e) is a side view showing a state in which the prepreg tape is wound to form an inner tape layer. FIG. 3(f) is a developed view showing a prepreg sheet forming an intermediate sheet layer, (g) is a side view showing a state in which the intermediate sheet layer is formed by winding the prepreg sheet, and (h) is a prepreg tape. FIG. 4 is a side view showing a state in which a reinforcement layer is formed by winding an outer tape layer and a reinforcement prepreg. FIG. 4 is a longitudinal side view showing the rod tip portion of the rod base side rod body. Fig. 5(a) is a perspective view showing a rod material when the rod tip side rod body is formed into a solid rod-shaped body, and (b) shows the rod tip side portion of the solid rod-shaped body having a forward tapered surface and a reverse tapered surface. A perspective view showing the state formed on the rod base side portion of the surface, (c) is used when forming the rod tip side portion of the forward tapered surface and the rod base side portion of the reverse tapered surface on the solid rod-shaped body. Centerless grinding machine, (d) Side view showing the state before the rod base end prepreg sheet is wound around the rod base portion of the solid rod, (e) is the rod base portion of the solid rod. FIG. 4 is a side view showing a state in which winding of the rod base end side prepreg sheet is finished; FIG. 6 is a vertical cross-sectional side view of another implementation structure showing a fixed state in which the rod tip end side mating portion and the rod base end side mating portion of the drawn rod are fitted to each other. FIG. 7 is a vertical cross-sectional side view of another implementation structure, showing a state in which the rod tip-side rod body and the rod base-side rod body are connected using a spigot core material. Fig. 8 (a) is a side view of inserting the test rod tip side mating part into the rod base end side mating part to create a fitted state, (b) is a side view showing the tensile force measurement state, (c) is a table showing measurement results. FIG. 9 is a vertical cross-sectional side view of another implementation structure showing the rod tip side rod body. FIG. 10 is a vertical cross-sectional side view of another implementation structure showing the rod base side rod body. FIG. 11 is a side view showing the rod tip side rod body and the rod base side rod body with indicators indicating that the rod base end side mating portion and the rod tip side mating portion are set in a specific relative positional relationship. It is a diagram.

The invention of the present application is a fishing rod in which a rod base end side mating portion of a rod tip side rod body and a rod tip side mating portion of a rod base side rod body are fitted and connected, and the rod tip side rod body is used when a tackle is thrown. A fishing rod that can easily avoid the so-called ``slipping phenomenon'' in which the rod separates from the rod base side and jumps out, and the so-called ``sticking phenomenon'' in which the rod tip side and the rod base side are not separated at the stage of finishing fishing. It is in providing an edge structure.

[First embodiment]
As shown in FIGS. 1 and 2, the jointed rod A is configured by connecting a rod tip side rod body 1 and a rod base side rod body 2 . That is, the outer peripheral surface of the rod tip side end portion of the rod tip side rod body 1 is formed as a reverse tapered surface 1a whose diameter decreases toward the root side, and the inner peripheral surface of the rod tip side open end of the rod tip side rod body 2 is formed to be a reverse tapered surface 1a. Formed on the tapered surface 2a, the root side end of the rod tip side rod body 1 is fitted into the rod tip side open end of the rod tip side rod body 2. - 特許庁
The number of rod bodies connected as the jointed rod A is not limited to these two. Although not shown, each rod body is provided with a fishing line guide, and a hand rod is provided with a reel seat to present a jointed rod A for enjoying lure fishing.

The rod tip side rod body 1 and the like in the jointed rod A are manufactured as follows. As shown in FIG. 5(a), a bundle (500 to 1000 fibers) of glass reinforcing fibers bundled along the axis is immersed in a thermosetting resin liquid to be impregnated with the resin, and then pulled out from a die to a predetermined amount. Cut to length to form a solid rod material. Here, carbon fiber or the like can be used as the reinforcing fiber, but glass fiber, which has a lower tensile modulus and higher flexibility than carbon fiber or the like, is used. The tensile elastic modulus of the glass fiber used can be 5 Ton/mm ² to 15 Ton/mm ² .

As shown in FIG. 5(a), the rod tip side rod body 1 finished as a solid rod-shaped body is processed by the centerless grinding machine C shown in (c) to grind the rod tip side portion as shown in FIG. 5(b). 1A is formed into a forward tapered surface whose diameter increases toward the rod base side, the rod base side portion 1B is arranged on the rod base side of the rod tip side portion 1A, and the diameter of the rod base side portion 1B is reduced toward the rod base end side. It is formed on a reverse tapered surface.
As shown in FIG. 5(d), a rod base end side prepreg sheet 9 made of carbon fiber is wound from the rear end of the rod tip side portion 1A to the entire rod base portion 1B. The rod base end side prepreg sheet 9 is cut into a trapezoid that is wider toward the rod tip side, has a thickness of 2 to 3 mm/1000, and is wound in three plies. In the wound state, the direction of the reinforcing fibers c of the rod base end side prepreg sheet 9 is arranged in a direction inclined with respect to the rod axis line X to form a spiral shape.
As shown in FIG. 5(e), the rod tip side rod body 1 around which three plies of the rod base end side prepreg sheet 9 are wound is subjected to the baking treatment so that the resin and the reinforcing fibers c are integrated and hardened. The outer peripheral surface of the rod tip side rod body 1 on the rod base side is polished by a centerless grinder C shown in (c) to ensure the desired surface accuracy and inclination, and the rod base end side of the rod tip side rod body 1 is polished. A mating portion 1C is formed. The sandwiching angle Θ between the reinforcing fiber c and the rod axis X is in the range of 45°≦Θ<90°. Desirably, the range is 50°<Θ<70°.

Next, the manufacturing process of the rod base side rod body 2 will be described starting with the structure of the mandrel 3. FIG. As shown in FIGS. 2(a) and 2(b), the mandrel 3 is composed of a rod tip side mandrel portion 3A and a rod base side mandrel portion 3B. The mandrel 3 is generally made of a steel material such as steel, stainless steel, or titanium, and is formed in a substantially truncated cone shape, and is surface-coated with chromium plating or the like.

The rod tip side mandrel portion 3A has a pipe shape from the tip end to the base end, and is formed in a substantially truncated cone shape having a reverse tapered surface with a gradually decreasing outer diameter. The rod base mandrel portion 3B has a columnar shape from the tip end to the base end, and is formed in a substantially truncated cone shape having a regular tapered surface with a gradually increasing outer diameter.
A spigot core portion 3b is formed at the tip side end of the rod-end mandrel portion 3B, and can be engaged in the engagement hole 3a on the rod-end side using the pipe-shaped internal space of the rod-end mandrel portion 3A. is formed in

The rod tip side mandrel portion 3A and the rod base side mandrel portion 3B as described above are inserted into and engaged with the engagement hole 3a formed on the base side of the spigot core portion 3b. When the stepped portion 3d formed on the rod tip side mandrel portion 3A is in contact with the base side open end 3c of the rod tip side mandrel portion 3A, the insertion engagement is completed, and the mandrel 3 is integrally connected. This state is shown in FIG. 2(b).
Holes 3e and 3f for tool engagement are formed in the rod tip portion of the rod tip side mandrel portion 3A and the rod base end portion of the rod base side mandrel portion 3B.
A hook locking tool is attached to the tool locking holes 3e and 3f, and a drawing cylinder or the like is used to separate the rod tip side mandrel portion 3A and the rod base side mandrel portion 3B.

As shown in FIG. 4, the rod base-side rod body 2 has an innermost layer 2A, an inner tape layer 2B on the outer side, an intermediate sheet layer 2C on the outer side of the inner tape layer 2B, and an outer tape layer 2D on the outer side. formed and constructed. Outside the outer tape layer 2D, reinforcing layers 2E are provided on the rod tip side and the rod base side.

The innermost layer 2A is provided for a certain length from the rod tip side end, and has a reverse tapered surface 2a that decreases in diameter toward the rod base side and a positive taper that further expands in diameter from the base side of the reverse tapered surface 2a toward the base side. It has an inner peripheral surface consisting of the surface 2b.
In the innermost layer 2A, a prepreg sheet 4 made of glass reinforcing fiber is wound in a certain range from the reverse tapered inner peripheral surface side to the normal tapered inner peripheral surface side.

As shown in FIG. 2(c), the prepreg sheet 4 is a prepreg cut into sheets by arranging glass reinforcing fibers d in a direction inclined with respect to the rod axis X, impregnating them with epoxy resin or PET resin, and cutting them into sheets. be.
The rod tip side edge 4a of the prepreg sheet 4 made of glass reinforced fiber is cut in a direction perpendicular to the rod axis X, and the rod base side edge 4b is inclined from the direction perpendicular to the rod axis X. It has been severed. The remaining two sides form sides parallel to the rod axis X.
In this way, the prepreg sheet 4 made of glass reinforced fiber is formed at the rod tip side joining portion 2F of the rod base side rod body 2 . The sandwiching angle Θ between the reinforcing fiber d and the rod axis X is in the range of 45°≦Θ<90°. Desirably, the range is 50°<Θ<70°. Therefore, the inclination angle and the inclination direction of the surface reinforcing fiber with respect to the rod axis X of the rod base end side joint portion 1C of the rod tip side rod body 1 are matched.

The structure of the prepreg sheet 4 may be as follows.
(a) A bias type in which a sheet in which glass reinforcing fibers d are arranged in a direction inclined with respect to the rod axis X and a sheet arranged in a direction inclined in the opposite direction across the rod axis X are superimposed. It's okay.
(b) The prepreg sheet 4 made of glass reinforcing fiber is impregnated with epoxy resin or PET resin in cloth fiber woven in a state in which glass reinforcing fiber d is slanted with respect to the rod axis X and in a state where the fiber intersects. It may also be cut into sheets.
(c) The above sheet may be configured by replacing the glass reinforcing fibers d with carbon reinforcing fibers c.
A state in which the rod tip side edge 4a of the glass-reinforced fiber prepreg sheet 4 cut as described above is aligned with the tip end of the rod tip side mandrel portion 3A of the mandrel 3, as shown in FIG. 2(d). winding with . The glass-reinforced fiber prepreg sheet 4 is formed on the reverse tapered outer peripheral surface side with the connection point between the reverse tapered outer peripheral surface of the rod tip side mandrel portion 3A and the positive tapered inner peripheral surface of the rod base side mandrel portion 3B as a reference point. , and is wound in a certain range over the positive tapered outer peripheral surface side.

Next, the inner tape layer 2B will be explained. As shown in FIG. 2(e), what is used in the inner tape layer 2B is a narrow inner prepreg tape 5, in which a plurality of carbon reinforcing fibers are arranged in parallel along the longitudinal direction of the tape. , and impregnated with epoxy resin or the like to form a prepreg tape.
The inner prepreg tape 5 is spirally wound sequentially from the innermost layer 2A wound around the mandrel 3 and from the rod base side to form the inner tape layer 2B.

Next, the intermediate sheet layer 2C is formed. As shown in FIG. 3( f ), the intermediate sheet layer 2</b>C is formed by a substantially elongated trapezoidal intermediate prepreg sheet 6 . The intermediate prepreg sheet 6 is obtained by arranging carbon reinforcing fibers c parallel to the rod circumferential direction and the rod axis direction and intersecting them, impregnating them with epoxy resin or the like, and cutting them into sheets.
The above-described prepreg sheet 6 is cut so that the rod tip side edge 6A and the rod base side edge 6B are perpendicular to the rod axis X, and the winding start that is first wound on the inner tape layer 2B. The end side 6C is cut substantially parallel to the rod axis X, and the winding end side 6D is cut into a straight line that separates from the rod axis X toward the rod base. At the intersection of the rod tip side edge 6A and the winding start edge 6C orthogonal to the rod tip side edge 6A, there is provided an oblique intersection with both the rod tip side edge 6A and the winding start edge 6C. A cutout surface 6a is formed so that the cutout surface 6a separates from the rod axis X as it goes toward the rod tip side edge 6A.

The reason why the cutout portion by the cutout surface 6a is provided in the shape of the rod tip side of the intermediate sheet layer 2C is that the innermost layer 2A is provided in a certain range covering the reverse tapered inner peripheral surface side and the normal tapered inner peripheral surface side. When the intermediate sheet layer 2C is wound on the inner tape layer 2B, as shown in FIG. This is to create a state in which
The structure of the prepreg sheet 6 may be as follows.
(a) A bias type in which a sheet in which the reinforcing fibers c are aligned in the rod circumferential direction and a sheet in which the reinforcing fibers are aligned in the rod axis direction are overlapped may be used.
(b) It may be composed only of a sheet in which the reinforcing fibers c are aligned in the rod circumferential direction.
(c) It may be composed only of a sheet in which the reinforcing fibers c are aligned in the rod axis direction.
(d) It may be composed of a sheet in which reinforcing fibers c that are inclined with respect to the rod circumferential direction and reinforcing fibers c that are inclined with respect to the rod axis direction are woven so as to intersect each other.

Next, the outer tape layer 2D will be described. As shown in FIG. 3(h), what is used in the outer tape layer 2D is a narrow outer prepreg tape 7, in which a plurality of carbon reinforcing fibers c are arranged in parallel along the longitudinal direction of the tape. It is impregnated with epoxy resin or the like to form a prepreg tape.
The outer prepreg tape 7 is spirally wound sequentially from the rod tip end of the intermediate sheet layer 2C wound around the mandrel 3 to form the outer tape layer 2D.

Both the inner prepreg tape 5 and the outer prepreg tape 7 are wound in a helical manner in a state inclined with respect to the rod axis X, but the winding directions are opposite to each other and cross each other. wrapped around. As a result, it is possible to form a rod body having high strength as the rod base side rod body 2, particularly torsion-resistant.
As the winding start position of the inner prepreg tape 5 and the outer prepreg tape 7, either the rod tip side or the rod base side can be selected and is arbitrary. The point is that the inner prepreg tape 5 and the outer prepreg tape 7 should be wound in opposite directions.
As the winding form of each of the inner prepreg tape 5 and the outer prepreg tape 7, adjacent narrow widths (tape widths) wound spirally may partially overlap or be in close contact with each other, or , a state in which a gap is slightly opened may be used.

After winding the outer prepreg tape 7, as shown in FIG. 2(h), a reinforcing prepreg 8 having a short core length is wound around the rod tip and the rod base end. The reinforcing prepreg 8 is made of cloth fibers in which the reinforcing fibers c are interwoven. A reinforcing layer 2E is composed of reinforcing prepregs 8 arranged at the rod tip and the rod base end.
However, although not shown, a bias type prepreg may be used in which two prepregs having reinforcing fibers c aligned in one direction are aligned and stacked such that the reinforcing fibers c intersect each other.

After the reinforcing prepreg 8 is wound, a winding tape (not shown) is wound on the outer side, the mandrel 3 is fired together with the mandrel 3, and then the winding tape is peeled off.
After that, the rod tip side mandrel portion 3A and the rod base mandrel portion 3B are pulled out to the rod base side by cylinders (not shown) linked through the tool locking holes 3e and 3f. , separate the rod body and the mandrel 3. After that, it is coated with a predetermined coating and cut to a predetermined length to form a rod body.
Thus, even with the rod body having the reverse tapered surface 2a, the reinforcing fibers c and d can be cut without the need for reaming by adopting a manufacturing method in which the rod tip side mandrel portion 3A is pulled out toward the rod tip side. Therefore, it is possible to obtain a smooth inner peripheral surface in which the resin surface is not roughened.

Incidentally, as shown in FIG. 1, the reinforcing fiber d of the rod tip side prepreg sheet 4 constituting the rod tip side mating portion 2F of the rod base side rod body 2 and the rod base end side mating portion of the rod tip side rod body 1 The reinforcing fibers c of the rod base end side prepreg sheet 9 that constitutes 1C have the same inclination angle (the angle between the rod axis X and the reinforcing fibers) Θ with respect to the rod axis X, and are oriented in the same direction in the circumferential direction. It is configured to draw a spiral in the The pitch of the reinforcing fibers in the axial direction is the same as the male screw and Like female threads, it is desirable that the peaks and valleys overlap with each other at the same pitch, but this is not necessarily the case.

The rod tip side mating portion 2F of the rod base side rod body 2 formed as described above and the rod base end side mating portion 1C of the rod tip side rod body 1 were combined, and the fitting force at the time of fixation was measured. . The results are shown in FIG.
(1) As shown in FIG. 8(a), in a state in which the rod tip side mating portion 2F of the rod base side rod body 2 and the rod base end side mating portion 1C of the rod tip side rod body 1 are loosely combined, A predetermined amount of l ₁ =10 mm is pushed in with a weight W to set the normal alignment state.
(2) Next, as shown in FIG. 8(b), a tension measuring device 10 is attached to the tip of the rod tip side rod body 1, and a rod tip position of the rod tip side rod body 2 is attached to the rod tip side. A relative angle measuring device 14 for measuring the relative rotation angle in the circumferential direction between the rod body 2 and the rod tip side rod body 1 is attached and measured.
(3) A strongly fitted state (fixed state) in which the rod tip side mating portion 2F of the rod base side rod body 2 and the rod base end side mating portion 1C of the rod tip side rod body 1 are tightly fitted and loosely fitted. A loose fitting state (non-fixed state) and an intermediate state between the two are defined as reference states. Rotating about 30° (i.e. +30°) in one direction from the reference state sets the loose mating state, and rotating about 30° (i.e. -30°) in the opposite direction from the standard state sets the tight mating state (unfixed). state) can be set.
(4) Then, the fitting force against the tension was measured in a state rotated by +30° and -30° from the reference state.
(5) By the way, the configuration of the product of the present invention is such that both the rod tip side joining portion 2F of the rod base side rod body 2 and the rod base end side joining portion 1C of the rod tip side rod body 1 are wound with reinforcing fibers d and c. The direction of rotation is the same and the angle of inclination (inclination with respect to the axis) Θ=60°. On the other hand, in the case of the conventional product, both the rod tip side mating portion 2F of the rod base side rod body 2 and the rod base end side mating portion 1C of the rod tip side rod body 1 are aligned in the direction along the axis X (anti-axis line inclination). ) Θ=0°.
(6) FIG. 8(c) shows the result of the test performed as described above. According to the results of this test, the invented product exhibits a mating force (138, 6N) that is more than double that of the conventional product in the tight mating state, and nearly 60% of the conventional product in the loose mating state. It shows that the rod tip side rod body 1 can be separated from the rod base side rod body 2. The relative rotation torque required for relative rotation when switching from the standard state to the strong mating state is also about 1.5 times that of the conventional product, and I feel that the state has been switched to the strong mating state. became possible.

Next, a description will be given of indicators that assist in switching from the reference state described above to the strongly fitted state (fixed state) and the loosely fitted state (non-fixed state).
As shown in FIG. 11, rod end side mating portions 1C are formed on the outer peripheral surfaces of the rod end side mating portion 1C of the rod tip side rod body 1 and the rod tip side mating portion 2F of the rod base side rod body 2, respectively. and the rod tip side mating portion 2F are provided with an index 13 indicating that a specific relative positional relationship has been established.

As the indicator 13, a black dot is used as shown in FIG. 11(a). Alternatively, the thin wires 13A may be extended from the black circle 13 toward each other, and the thin wires 13A may be aligned with each other at the rod tip of the rod base side rod body 2.

Examples of cases where the index 13 indicates that a specific relative positional relationship has been set include the following.
(a) The index 13 indicates a strong fitting state (fixed state).
(b) The index 13 indicates a loose fitting state (unfixed state).
(c) Index 13 indicates the reference state.
As the indicator 13, a black circle is used, but various symbols and figures can be written.

In the above case, a simple configuration with black dots 13 is shown, but as shown in FIG.
This would make it easier to operate. As descriptions, LOCK (with parentheses) indicating the fixed state and RELEASE (with parentheses) indicating the non-fixed state are given.
Here, a circle 13 indicates a reference state, and a fixed state can be realized by rotating the member in the LOCK direction and performing a twisting operation. On the other hand, if it is twisted by relatively rotating it in the RELEASE direction, the non-fixed state can be realized.

[Another embodiment of the first embodiment]
The rod tip-side rod body 1 may be a cylindrical body instead of a solid rod body.
That is, carbon fiber reinforcing fibers c (or glass reinforcing fibers d) are aligned in one direction, and the group of aligned reinforcing fibers is impregnated with a thermosetting resin (or thermoplastic resin) such as epoxy resin. , to form a prepreg sheet.
As shown in FIG. 9(a), a plurality of prepreg sheets 10A and 10B cut into substantially trapezoidal shapes are wound around a mandrel 3. As shown in FIG. Here, a prepreg sheet 10A in which the reinforcing fibers c and d are aligned in the circumferential direction and a prepreg sheet 10B in which the reinforcing fibers c and d are aligned in the axial direction are wound around the mandrel 3.

Next, similarly to the solid rod-shaped body, a grinding process is performed to form the rod-end-side mating portion 1C of the rod-tip-side rod body 1 so as to fit into the rod-tip-side mating portion 2F of the rod-bottom-side rod body 2. conduct. With the centerless grinding machine C shown in FIG. 5(c), as shown in FIG. 9(c), the rod tip side portion 1A, which is formed on the forward tapered surface that increases in diameter toward the rod base side, is ground to the rod base side. A root side portion 1B is provided, and the rod root side portion 1B is formed to have a reverse tapered surface with a smaller diameter toward the rod root end side.

As shown in FIGS. 9(c) and 9(d), a rod base end side prepreg sheet 9 made of carbon fiber is wound from the rear end of the rod tip side portion 1A to the entire rod base portion 1B. The rod base end side prepreg sheet 9 is cut into a trapezoid that is wider toward the rod tip side, has a thickness of 2 to 3 mm/1000, and is wound in three plies. In the wound state, the direction of the reinforcing fibers c of the rod base end side prepreg sheet 9 is arranged in a direction inclined with respect to the rod axis line X to form a spiral shape.

As shown in FIG. 9(d), the rod tip side rod body 1 around which three plies of the rod base end side prepreg sheet 9 are wound is subjected to the firing treatment so that the resin and the reinforcing fibers c are integrated and hardened. The outer peripheral surface of the rod tip side rod body 1 on the rod base side is surface-polished by a centerless grinder C shown in 5(c) to ensure the desired surface accuracy and inclination, and the rod base end of the rod tip side rod body 1 is finished. A side mating portion 1C is formed. As shown in FIG. 9(e), the included angle Θ between the reinforcing fiber c and the rod axis X is in the range of 45°≦Θ<90°. Desirably, the range is 50°<Θ<70°.

As the reinforcing fibers constituting the prepreg, specifically, glass fibers, aramid fibers, alumina fibers, etc. can be used in addition to carbon fibers. A thermoplastic resin such as a thermoplastic resin or PV(E) can be used. Also, the prepreg may be a woven fabric in which reinforcing fibers are woven and impregnated with a resin.

Next, another implementation structure of the rod base side rod body 2 will be described. In the first embodiment described above, the two mandrels 3A and 3B that can be connected and separated are used to form the rod base rod body 2, but here the rod base rod body 2 is formed by a single mandrel 3. create.
As shown in FIG. 10(a), in order to form the rod tip side joining portion 2F of the rod base side rod body 2, the rod tip side prepreg sheet 11 made of carbon fiber is wound. The rod tip side prepreg sheet 11 is cut into a trapezoid that is wider toward the rod base side, has a thickness of 2 to 3 mm/1000, and is wound in 3 plies. In the wound state, the direction of the reinforcing fibers c of the rod tip side prepreg sheet 11 is aligned in a direction inclined with respect to the rod axis X, and presents a spiral shape.

As shown in FIG. 10(b), three prepreg sheets 12A, 12B, and 12C are wound around the rod material on which the rod tip side prepreg sheet 11 is wound. These three prepreg sheets are an inner prepreg sheet 12A in which the reinforcing fibers c are aligned in the circumferential direction from the inside, an intermediate prepreg sheet 12B in which the reinforcing fibers c are aligned in the axial direction, and the reinforcing fibers c. There are three outer prepreg sheets 12C aligned in the circumferential direction.

As shown in FIG. 10(c), the rod material around which the three prepreg sheets 12A, 12B, and 12C are wound is fired together with the mandrel 3 to decore the mandrel 3. As shown in FIG. After firing, the inner peripheral surface of the rod tip side of the rod base side rod body 2, which has been hardened by integrating the resin and the reinforcing fiber c, is polished with a reamer R as shown in FIGS. The rod tip side joining portion 2F of the rod base side rod body 2 is formed while ensuring desired surface accuracy and inclination. As shown in FIG. 10(f), the included angle Θ between the reinforcing fiber c and the rod axis X is in the range of 45°≦Θ<90°. Desirably, the range is 50°<Θ<70°.
Instead of the rod tip side prepreg sheet 11, a thick prepreg tape may be wound.

[Second embodiment]
Here, although not shown, one of the rod tip side outer peripheral surface of the rod tip side rod body 1 and the rod tip side inner peripheral surface of the rod tip side rod body 2 shown in the first embodiment is provided with the above-mentioned A carbon fiber prepreg sheet with a short axial core length is wound, and a nonwoven fabric is arranged on the other of the outer peripheral surface of the rod tip side rod body 1 and the inner peripheral surface of the rod tip side of the rod base side rod body 2. Thus, the rod base end side mating portion 1C of the rod tip side rod body 1 and the rod tip side mating portion 2F of the rod base side rod body 2 may be configured.

A nonwoven fabric is not a sheet made by impregnating reinforcing fibers c with a resin, but a cloth made by bonding or entangling fibers by thermal, mechanical or chemical action. , the orientation of the fibers is random.
As for the prepreg sheet, as shown in FIG. 10(b), it is applied to either the rod end side mating portion 1C of the rod tip side rod body 1 or the rod tip side mating portion 2F of the rod base side rod body 2. At that time, it has the above-described thickness, length and breadth, etc., and is wound by three plies.

With such a configuration, when the rod tip side rod body 1 and the rod base side rod body 2 are relatively rotated in one direction, the rod tip side rod body 1 enters a state further into the rod base side rod body 2. The mating portions 1C and 2F are tightly tightened, thereby suppressing the slip-out phenomenon and the like. On the other hand, when they are relatively rotated in opposite directions, the rod tip side rod body 1 moves away from the rod base side rod body 2, the fixed state of both is relaxed, and the rod tip side rod body 1 moves toward the rod. It is separated from the root side rod body 2 and can be easily finished.

[Third embodiment]
Here, a state in which the present invention is applied to the drawing rod B is shown. As shown in FIG. 6, in a swinging rod B having 5 to 6 rod base side rod bodies from the rod tip side rod body, the rod tip side rod body 1 is pulled out from the rod base side rod body 2 to set the fishing state. In this case, the rod base end side mating portion 1C of the rod tip side rod body 1 and the rod tip side mating portion 2F of the rod base side rod body 2 are in a fitted state. In this case, the inclination direction and orientation of the reinforcing fibers c and d exposed on the surface of the rod base end joint portion 1C of the rod tip side rod body 1 with respect to the rod axis X are the rod tip side of the rod base rod body 2. It is the same as the direction of inclination with respect to the rod axis X of the reinforcing fibers c and d exposed on the surface of the joint portion 2F.
Although not shown, the sandwiching angle Θ between the reinforcing fibers c and d and the rod axis X is in the range of 45°≦Θ<90°. Desirably, the range is 50°<Θ<70°.

With such a configuration, when the rod tip side rod body 1 and the rod base side rod body 2 are relatively rotated in one direction, the rod tip side rod body 1 protrudes further than the rod base side rod body 2. The mating portions 1C and 2F are tightly tightened to suppress slippage phenomenon and the like. On the other hand, when they are relatively rotated in the direction opposite to the above, the rod tip side rod body 1 enters the rod base side rod body 2, the fixed state of both is relaxed, and the rod tip side rod body 1 moves toward the rod base side. It enters into the rod body 2 and can easily perform closing processing.

[Fourth embodiment]
Here, as shown in FIG. 7, a state in which the present invention is applied to a spigot joint rod C is shown. The spigot core material 1c is extended from the rod tip side rod body 1 toward the rod base side rod body 2, and the rod body shown in the first embodiment is used as the rod base side rod body 2. As shown in FIG. 5(d), the outer peripheral surface of the spigot core 1c is formed into a reverse tapered surface with a smaller diameter toward the rod base, and a rod base end side prepreg sheet 9 made of carbon fiber is wound around the inclined surface. do. The rod base end side prepreg sheet 9 is cut into a trapezoid that is wider toward the rod tip side, has a thickness of 2 to 3 mm/1000, and is wound in three plies. In the wound state, the direction of the reinforcing fibers c of the rod base end side prepreg sheet 9 is arranged in a direction inclined with respect to the rod axis line X to form a spiral shape.

In the same manner as described above, the spigot core material 1c wound with three plies of the rod end side prepreg sheet 9 is subjected to a firing treatment to integrate the resin and the reinforcing fibers c to form a hardened outer peripheral surface. The centerless grinder shown in FIG. 7 is used to polish the surface to ensure the desired surface accuracy and inclination, thereby forming the spigot core material 1c. As shown in FIG. A mating portion 1C is formed by protruding from the rod base side end portion of 1. The sandwiching angle Θ between the reinforcing fiber c and the rod axis X is in the range of 45°≦Θ<90°. Desirably, the range is 50°<Θ<70°.

With such a configuration, when the rod tip side rod body 1 and the rod base side rod body 2 are relatively rotated in one direction, the spigot core material 1c of the rod tip side rod body 1 is further inserted into the rod base side rod body 2. Intrusion, the mating portions 1C and 2F are tightly tightened, and the slipping phenomenon and the like are suppressed. On the other hand, when they are relatively rotated in the direction opposite to the above, the rod tip side rod body 1 is separated from the rod base side rod body 2, so that the fixed state of the two is relaxed, and the closing process for separating the two is facilitated. can be done

[Another embodiment]
It may be applied to a reverse parallel joint rod. In FIG. 1(a), a rod tip-side rod body 1 and a rod base-side rod body 2 are interchanged to form a reverse parallel joint rod. That is, the rod tip portion of the rod base-side rod body 2 is formed to have a tapered outer peripheral surface that decreases in diameter toward the rod tip side, and the rod base end portion of the rod tip-side rod body 1 has a diameter that increases toward the rod base side. It can be configured by forming a tapered inner peripheral surface.

INDUSTRIAL APPLICABILITY The present invention can suppress the separation of the rod tip side rod body from the rod base side rod body even when throwing in a tackle during a fishing operation, and can reliably separate the rod tip side rod body when finishing fishing and closing it. To provide a joint structure of a fishing rod capable of separating a body and a rod base side rod body.

1 Rod tip side rod body 1A Rod tip side portion 1B Rod base portion 1a Reverse tapered surface 1C Rod base end side mating portion 2 Rod base side rod body 2A Innermost layer 2B Inner tape layer 2C Intermediate sheet layer 2D Outer tape layer 2E Reinforcement Layer 2F Rod tip side mating portion 2a Reverse tapered surface 2b Normal tapered surface 3 Mandrel 3A Rod tip side mandrel portion 3B Rod base side mandrel portion 3a Engagement hole 3b Inlay core portion 3c Base side open end 3d Stepped portion 4 Made of glass reinforced fiber Prepreg sheet 4a Rod tip side edge 5 Inner prepreg tape 6 Intermediate prepreg sheet 6A Rod tip side edge 6B Rod base side edge 6C Winding start edge 6D Winding end edge 6a Cut surface 7 Outer prepreg tape 8 Reinforcing prepreg 9 Rod Base end side prepreg sheet 10 Tensile measuring device 11 Rod tip side prepreg sheets 12A, 12B, 12C Prepreg sheet 13 Index 13A Thin line 13B Arrow 13C Description 14 Relative angle meter A Parallel rod Θ Angle between reinforcing fiber and rod axis R Reamer X Rod axis W Weight c Carbon reinforcing fiber d Glass reinforcing fiber

Claims (4)

By relatively rotating the rod tip side rod body and the rod base side rod body in one direction, the rod base end side mating portion of the rod tip side rod body and the rod tip side mating portion of the rod base side rod body. a fixing state in which the pressure contact state between the rod base end side mating portion of the rod tip side rod body and the rod tip side mating portion of the rod base side rod body is tightened to fix the pressure contact state and bring about a fishing operation state ; The rod end side of the rod tip side rod body is relatively rotated in the direction opposite to the one direction by relatively rotating the rod base end side mating portion of the rod tip side rod body and the rod tip side mating portion of the rod base side rod body. It is configured to be switchable between a non-fixed state in which the pressure contact state between the mating portion and the rod tip side mating portion of the rod base side rod body is released and separated into a non-fishing operation state,
The surface of the rod root end side mating portion that is in pressure contact with the rod tip side mating portion has reinforcing fibers that are aligned at an inclination angle Θ formed by a sandwich angle Θ with the rod axis of 45°≦Θ<90°. Placing the prepreg on the rod base end side,
The surface of the rod tip side mating portion that is in pressure contact with the rod base end side mating portion includes a reverse tapered surface whose diameter decreases toward the rod base side, and a positive tapered surface whose diameter increases further toward the base side from the base side of the reverse tapered surface. and are formed,
A rod tip having reinforcing fibers aligned at an inclination angle Θ that matches the inclination angle Θ of the reinforcing fibers of the rod-end-side prepreg on the surface of the rod-tip-side joining part that is in pressure contact with the rod-end-side joining part. Place the side prepreg,
A fishing rod joint structure in which the rod tip side prepreg is arranged in a certain range from the reverse tapered surface to the positive tapered surface. The rod tip side rod body is a solid rod-shaped or hollow cylindrical small diameter tip side rod body positioned on the rod tip side, and the rod base side rod body is a hollow cylindrical large diameter rod body positioned on the rod base side. is a rod body,
(a) A joint type rod body that creates a fixed state by fitting the rod base end side mating portion of the small diameter tip side rod body into the rod tip side mating portion of the large diameter tip holding rod body (b) ) any one of spigot joint type rod bodies in which the spigot joint core material is formed with an inclined outer peripheral surface at the rod base end side mating part, and the spigot joint core material is fitted to the mating part on the mating side to create a fixed state 2. A fishing rod joint structure according to claim 1, which is formed as one piece. An inclined outer peripheral surface is formed at the rod base end side mating portion , and an inclined inner peripheral surface is formed at the rod base end side mating portion ,
(a) A joint type rod body that creates a fixed state by fitting the rod base end side mating portion of the small diameter tip side rod body into the rod tip side mating portion of the large diameter tip holding rod body (b) ) any one of spigot joint type rod bodies in which the spigot joint core material is formed with an inclined outer peripheral surface at the rod base end side mating part, and the spigot joint core material is fitted to the mating part on the mating side to create a fixed state 3. A fishing rod joint structure according to claim 2, wherein said joint structure is formed as one piece. An indicator is formed on the rod tip side rod body and the rod base side rod body to indicate that the rod base end side mating portion and the rod tip side mating portion are set in a specific relative positional relationship. ,
The fishing rod mating structure according to any one of claims 1 to 3 , wherein the index includes a rotation direction for recognizing the fixed state and the non-fixed state .

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