JP6990168B2 - A fishing rod in which multiple rods are joined together - Google Patents

Description

The present invention relates to a fishing rod in which a plurality of rod bodies are joined.

In an in-row joint type fishing rod, a hollow small-diameter rod body and a hollow large-diameter rod body are connected by an in-row core material. When a fishing rod connected by an in-row core material is used, there is a problem that the in-row core material is easily damaged because a shearing force acts intensively on a part of the in-row core material. A conventional in-row joint type fishing rod is disclosed in, for example, Japanese Patent Application Laid-Open No. 5-068270. As disclosed in the same gazette, in an in-row joint type fishing rod, one end of a rod body joined by an in-row core material is formed in a tapered shape to define a gap in the inner circumference of the rod body. It is known that the stress acting on the inlay core material can be dispersed by doing so.

Jikkenhei 5-068270 Gazette

If a gap is provided on the inner circumference of the rod body to alleviate the stress concentration on the inlay core material, the strength of the rod body may deteriorate. Therefore, as described in the above publication, the region defining the voids of the rod body is configured to be thick. For this reason, in the conventional in-row joint type fishing rod, there is a problem that the bending rigidity suddenly changes at the end portion of the rod body configured to be thick.

One of the objects of the present invention is to alleviate stress concentration on the inlay core material at the end of the rod to be joined without abrupt changes in the bending rigidity of the rod in the inrow joint type fishing rod. It is to provide a gap of. Objectives other than the above of the present invention will become apparent by reference to the entire specification.

A fishing rod according to an embodiment of the present invention has a hollow rod body extending from one end to the other end along a central axis, and an outer peripheral surface inclined by a first angle with respect to the central axis, and the rod is inclined from one end to the other end. A shaft member that is inserted into the body and is supported on the inner peripheral surface of the rod body at a support position on the other end side of the one end in the axial direction along the central axis is provided. The rod body is provided on the innermost side in the radial direction and includes a first low-rigidity layer containing a first reinforcing fiber, and a main body provided on the outer side in the radial direction of the first low-rigidity layer and containing a second reinforcing fiber. The bending rigidity of the first low-rigidity layer including the layer is smaller than the bending rigidity of the main body layer, and the inner peripheral surface of the first low-rigidity layer is located on the central axis from one end to the support position. On the other hand, it has an inclined surface that is inclined and extends at a second angle larger than the first angle.

In one embodiment of the present invention, the first reinforcing fiber has a tensile elastic modulus of 300 kgf / mm ² or more.

The fishing rod according to the embodiment of the present invention includes a second low-rigidity layer between the first low-rigidity layer and the main body layer. The bending rigidity of the second low-rigidity layer is smaller than the bending rigidity of the main body layer.

In one embodiment of the present invention, the first reinforcing fiber is oriented in the circumferential direction around the central axis.

In one embodiment of the present invention, the rod body has a reinforcing layer provided on the radial outer side of the main body layer at a position overlapping with the first low-rigidity layer in the axial direction along the central axis.

In one embodiment of the present invention, the length of the reinforcing layer in the axial direction is longer than the length of the first low-rigidity layer in the axial direction.

In one embodiment of the present invention, the inclined surface has irregularities.

In one embodiment of the present invention, the inner peripheral surface of the rod body has a parallel surface extending from the support position to the other end side in parallel with or substantially parallel to the central axis.

In one embodiment of the present invention, the shaft member is an inlay core material.

In one embodiment of the present invention, the shaft member is another rod body having a diameter smaller than that of the rod body.

According to the embodiment of the present invention, in an in-row joint type fishing rod, a gap for relaxing stress concentration on the in-row core material at the end of the rod to be joined without abrupt changes in the bending rigidity of the rod. Can be provided.

It is a schematic diagram which shows the fishing rod by one Embodiment of this invention. It is sectional drawing which shows typically the joint structure of the large-diameter rod body and the small-diameter rod body which the fishing rod of FIG. 1 has. It is a schematic diagram which shows the splicing structure shown in FIG. 2 in an enlarged manner. It is a schematic diagram which shows the shape of the inner peripheral surface of the large diameter rod body of FIG. It is a figure which shows typically the arrangement of the outer peripheral surface of a shaft member with respect to the inner peripheral surface of a large-diameter rod body. FIG. 5a shows the arrangement of the outer peripheral surface of the shaft member with respect to the inner peripheral surface of the large-diameter rod body when the fishing rod is not bent. It is a figure which shows typically the arrangement of the outer peripheral surface of a shaft member with respect to the inner peripheral surface of a large-diameter rod body. FIG. 5b shows the arrangement of the outer peripheral surface of the shaft member with respect to the inner peripheral surface of the large-diameter rod body when the fishing rod is bent. It is a figure which shows typically the arrangement of the outer peripheral surface of a shaft member with respect to the inner peripheral surface of a large-diameter rod body. FIG. 5c shows the arrangement of the outer peripheral surface of the shaft member with respect to the inner peripheral surface of the large-diameter rod body when the fishing rod is further bent. It is a schematic diagram explaining the manufacturing method of the fishing rod of FIG. It is a schematic diagram which shows the joint structure of the large-diameter rod body and the small-diameter rod body which the fishing rod by another embodiment of this invention has by enlarging. It is a schematic diagram which opened and developed the joint structure of the fishing rod shown in FIG. 7 by the line extending in the direction of a central axis. It is a figure which shows typically the cross section which cut the tip rod in the plane perpendicular to the central axis. It is a figure which shows typically the cross section which cut the tip rod in the plane perpendicular to the central axis. It is a schematic diagram which shows the fishing rod by one Embodiment of this invention. It is a schematic diagram which shows the joint structure of the large-diameter rod body and the small-diameter rod body which the fishing rod by another embodiment of this invention has by enlarging.

Hereinafter, various embodiments of the present invention will be described with reference to the drawings as appropriate. The same reference numerals are given to the components common to each drawing. It should be noted that each drawing is not always drawn to the correct scale for convenience of explanation.

A fishing rod 1 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 4. FIG. 1 is a schematic view of an in-row joint type fishing rod 1 according to an embodiment of the present invention. FIG. 2 is a cross-sectional view schematically showing a joint structure of a hand rod 5 which is an example of a large-diameter rod body in a fishing rod 1 and a tip rod 2 which is an example of a small-diameter rod body, and FIG. 3 is a cross-sectional view showing FIG. It is a schematic diagram showing an enlarged view of the splicing structure shown in FIG. 4, and FIG. 4 is a schematic diagram showing the shape of the inner peripheral surface of the tip rod 2 of FIG.

As shown in the figure, the fishing rod 1 has a tip rod 2 and a hand rod 5 joined to the tip rod 2. Both the tip rod 2 and the hand rod 5 are formed in a hollow tubular shape extending along the central axis X. In the present specification, the direction along the central axis X is referred to as an axial direction or a central axis direction, and the direction extending perpendicularly from the central axis X to the central axis X may be referred to as a radial direction. The tip rod 2 extends from the rear end 2a1 to its front end 2a2. The hand rod 5 extends from the rear end 5a1 to its front end 5a2. The tip rod 2 and the hand rod 5 are obtained, for example, by firing a prepreg sheet in which carbon fibers are impregnated with a synthetic resin to form a tubular fired body, and polishing and painting the fired body. The details of the manufacturing process of the tip rod 2 will be described later.

A grip 4 is provided at the rear end of the hand rod 5. A reel seat 3 is provided in front of the grip 4 of the hand rod 5. A plurality of fishing line guides 7 are attached to the upper ends of the outer peripheral surfaces of the tip rod 2 and the hand rod 5. A reel (not shown) is attached to the reel seat 3. In the illustrated embodiment, both bearing type reels are attached to the reel seat 3. Double-bearing reels are sometimes referred to as bait reels or bait casting reels. When a double-bearing type reel is used, the fishing line guide 7 is provided at the upper end of the outer peripheral surface of the tip rod 2 and the hand rod 5 as shown in the figure. In another embodiment, a spinning reel may be attached to the reel seat 3. When a spinning reel is used, the fishing line guide 7 is provided at the lower end of the outer peripheral surface of the tip rod 2 and the hand rod 5. In the present specification, when the front-back direction of the fishing rod 1 or the tip rod 2 and the hand rod 5 constituting the fishing rod 1 is referred to, the front-back direction shown in FIG. 1 is used as a reference.

In one embodiment, the hand rod 5 is configured such that the inner diameter thereof is larger than the inner diameter of the tip rod 2. The tip rod 2 is an example of a small-diameter rod body, and the hand rod 5 is an example of a large-diameter rod body. The inner diameter of the hand rod 5 and the inner diameter of the tip rod 2 are each formed in the range of, for example, 3 mm to 15 mm, and each outer diameter is formed in the range of 5 mm to 20 mm. The dimensions of the tip rod 2 and the hand rod 5 described herein are exemplary.

As shown in FIG. 3, the tip rod 2 has a first low-rigidity layer 21, a main body protection layer 22 provided on the outer surface of the first low-rigidity layer 21, and a main body protection in the vicinity of the rear end 2a1. The main body layer 23 provided on the outer surface of the layer 22 and the reinforcing layer 24 provided on the outer surface of the main body layer 23 are provided. The first low-rigidity layer 21, the main body protective layer 22, the main body layer 23, and the reinforcing layer 24 are all obtained by firing a fiber-reinforced resin sheet in which a matrix resin is impregnated with a reinforcing fiber bundle made of reinforcing fibers. The bending rigidity of the first low-rigidity layer 21 is smaller than the bending rigidity of the main body layer 23. The bending rigidity of the main body protective layer 22 is smaller than the bending rigidity of the main body layer 23. Since the bending rigidity of the main body protective layer 22 is smaller than the bending rigidity of the main body layer 23, the main body protective layer 22 may be referred to as a second low rigidity layer in the present specification. When the reinforcing fibers contained in the first low-rigidity layer 21 and the reinforcing fibers contained in the main body layer 23 are oriented in the same direction, the tensile elastic modulus of the reinforcing fibers contained in the first low-rigidity layer 21 is used as the main body. By making it smaller than the tensile elastic modulus of the reinforcing fiber contained in the layer 23, the bending rigidity of the first low-rigidity layer 21 can be made smaller than the bending rigidity of the main body layer 23. Further, by orienting the reinforcing fibers contained in the first low-rigidity layer 21 in a direction inclined with respect to the central axis X, the reinforcing fibers contained in the first low-rigidity layer 21 are included in the tensile elastic modulus and the main body layer 23. Even if the tensile elastic modulus of the reinforcing fiber is about the same, the bending rigidity of the first low-rigidity layer 21 can be made smaller than the bending rigidity of the main body layer 23. The reinforcing fibers contained in the first low-rigidity layer 21 are oriented in the circumferential direction around the central axis X, for example. As a result, even if the tensile elastic modulus of the reinforcing fiber contained in the first low-rigidity layer 21 and the tensile elastic modulus of the reinforcing fiber contained in the main body layer 23 are about the same, the bending rigidity of the first low-rigidity layer 21 is maintained in the main body. It can be made smaller than the bending rigidity of the layer 23. The main body protective layer 22 can also be configured in the same manner as the first low-rigidity layer 21.

In one embodiment, the tensile elastic modulus of the reinforcing fiber contained in the fiber reinforced resin sheet 51 is smaller than the tensile elastic modulus of the reinforcing fiber contained in the fiber reinforced resin sheet 53. In one embodiment, the reinforcing fibers contained in the fiber reinforced resin sheet 51 are 300 kgf / mm ² or more, 1 t / mm ² or more, 1.5 t / mm ² or more, 2 t / mm ² or more, 3 t / mm ² or more, 4 t. It has a tensile elasticity of / mm ² or more, 5t / mm ² or more, 6t / mm ² or more, 7t / mm ² or more, 8t / mm ² or more, 9t / mm ² or more, or 10t / mm ² or more. In one embodiment, the reinforcing fibers contained in the fiber reinforced resin sheet 53 have an elastic modulus of 20 t / mm ² to 30 t / mm ² , 22 t / mm ² to 28 t / mm ² , or 23 t / mm ² to 27 t / mm ² . Has. In one embodiment, the elongation rate of the reinforcing fibers contained in the fiber reinforced resin sheet 51 is 2% or more and 5% or less. In one embodiment, the elongation rate of the reinforcing fiber is defined as the value obtained by dividing the tensile strength by the tensile elastic modulus.

In the vicinity of the rear end 2a1 of the tip rod 2, the first low-rigidity layer 21 is arranged on the innermost side in the radial direction. Therefore, in the vicinity of the rear end 2a1 of the tip rod 2, the inner peripheral surface 21A of the first low-rigidity layer 21 constitutes the inner peripheral surface 2b of the tip rod 2. The inner peripheral surface 21A of the first low-rigidity layer 21 has an inclined surface 21A1 that is inclined with respect to the central axis X direction and extends forward from the rear end 2a1 of the tip rod 2, and a central axis from the front end of the inclined surface 21A1 to the front. It has a parallel surface 21A2 extending in parallel with A.

The tip rod 2 and the hand rod 5 are detachably connected to each other via the inlay core material 6. The inlay core material 6 is obtained, for example, by firing a prepreg sheet in which carbon fibers are impregnated with a synthetic resin to form a tubular fired body, and then polishing and painting the fired body. The inlay core material 6 has a substantially cylindrical rear end portion 6a and an inclined portion 6b provided on the front side of the rear end portion 6a and the outer peripheral surface thereof is inclined by a first angle θ1 with respect to the central axis X. It has a front end portion 6c which is provided in front of the inclined portion 6b and has a substantially cylindrical shape. The front end portion 6c is formed so as to have a smaller diameter than the rear end portion 6a. The inlay core material 6 is formed so that the length in the central axial direction thereof is 50 mm to 150 mm and the outer diameter of the rear end portion 6a is 3 mm to 15 mm. The first angle θ1 formed by the outer peripheral surface of the inclined portion 6b with respect to the central axis X is, for example, in the range of 0.05 ° to 5.0 °. The inclination of the outer peripheral surface of the inclined portion 6b shown in FIG. 2 is exaggerated to clearly indicate that the inclined portion 6b is inclined. The inlay core material 6 may be hollow or solid. The dimensions and shapes of the inlay core 6 described herein are exemplary. For example, the inlay core material 6 may be configured such that its outer peripheral surface is inclined at a constant angle from the rear end to the front end with respect to the central axis X.

In one embodiment, the inlay core material 6 is inserted into the hand rod 5 up to a predetermined position in the central axis X direction, and is fixed to the inner peripheral surface 5b of the hand rod 5 by, for example, adhesion. The inlay core material 6 is fixed to the hand rod 5 so that a part thereof protrudes forward from the front end 5a2 of the hand rod 5. By inserting the inlay core material 6 protruding from the front end 5a2 of the hand rod 5 into the tip rod 2 from the rear end 2a1 to the mating position, the tip rod 2 and the hand rod 5 are connected via the inlay core material 6. .. The inlay core material 6 is an example of a shaft member inserted into a rod body. In another embodiment, the inlay core material 6 is adhered to the inner peripheral surface 2b of the joint portion 2a of the tip rod 2. In this case, the inlay core material 6 is fixed to the tip rod 2 so as to project rearward from the rear end 2a1 of the tip rod 2. By inserting the portion of the inlay core material 6 that protrudes from the rear end 2a1 of the tip rod 2 into the hand rod 5, the tip rod 2 and the hand rod 5 are connected via the inlay core material 6.

In FIG. 2, the inlay core material 6 is inserted to the alignment position. When the inlay core material 6 reaches the mating position, a gap is formed between the front end 5a2 of the hand rod 5 and the rear end 2a1 of the tip rod 2. The length of this gap in the X direction of the central axis is, for example, 3 mm to 10 mm. The dimensions of this gap are exemplary. Since there is a gap between the tip rod 2 and the hand rod 5, when the tip rod 2 and the hand rod 5 are bent when the fishing rod 1 is used, bending stress and shear stress act on the inlay core material 6.

When the in-row core material 6 is inserted to the mating position, the outer surface 6e of the in-row core material 6 is at a position A1 at the boundary between the inclined surface 21A1 and the parallel surface 21A2 on the inner peripheral surface of the first low-rigidity layer 21. 1 It is in contact with the inner peripheral surface of the low-rigidity layer 21. Therefore, the inlay core material 6 is supported on the inner peripheral surface of the first low-rigidity layer 21 at the position A1. Is supported by. This position A1 is an example of a support position. When the in-row core material 6 is inserted to the mating position, the outer diameter of the in-row core material 6 and the inner diameter of the first low-rigidity layer 21 coincide with or substantially coincide with each other at the position A1.

Next, with reference to FIG. 4, the inner peripheral surface 21A of the first low-rigidity layer 21 will be further described. As described above, the inner peripheral surface 21A has an inclined surface 21A1 and a parallel surface 21A2. The inclined surface 21A1 has an uneven structure. In the illustrated embodiment, the inclined surface 21A1 has eight concave portions 21a1 to 21a8 and eight convex portions 21b1 to 21b8. This uneven structure is determined with reference to the virtual curve Y. Specifically, the concave portions 21a1 to 21a8 are recessed from the virtual curve Y toward the opposite side (diametrically outward) from the central axis X, and the convex portions 21b1 to 21b8 are directed from the virtual curve Y toward the central axis X. Is protruding. This virtual curve Y passes through the support position A1 in the region radially outside the outer peripheral surface 6e of the inlay core material 6 and the one end position A2 at the rear end of the inner peripheral surface 21A of the first low-rigidity layer 21. It is a virtual curve that becomes convex toward X. The convex portions 21b1 to 21b8 project from the virtual curve Y toward the central axis X so as not to interfere with the inlay core material 6 when the tip rod 2 is not bent. In other words, when the tip rod 2 is not bent, the convex portions 21b1 to 21b8 are radially outside the outer surface 6e of the inlay core material 6. The concave portions 21a1 to 21a8 and the convex portions 21b1 to 21b8 are located between the support position A1 and the one end position A2 in the axial direction.

As shown in FIG. 3, the one end position A2 is arranged radially outside the support position A1. When the tip rod 2 is cut on the surface including the central axis X, the virtual straight line connecting the support position A1 and the one end position A2 is inclined by a second angle θ2 larger than the first angle θ1 with respect to the central axis X. is doing. The second angle θ2 is, for example, an angle larger than the first angle θ1. The second angle θ2 is, for example, in the range of 0.1 ° to 10.0 °. In one embodiment, the second angle θ2 is 2.0 °.

Next, with reference to FIGS. 5a to 5c, the outer surface 6e of the inlay core material 6 and the inner peripheral surface of the inner peripheral surface 2b of the tip rod 2 when the fishing rod 1 is used (the inner peripheral surface of the first low-rigidity layer 21). The positional relationship with the surface 21A) will be described. As shown in FIG. 5a, when the tip rod 2 is not bent or the tip rod 2 is slightly bent, the outer surface 6e of the inlay core material 6 is the inner peripheral surface 2b of the tip rod 2 at the support position A1. However, it is not in contact with the inner peripheral surface 2b of the tip rod 2 at other positions. When the bending of the tip rod 2 becomes large, as shown in FIG. 5b, the convex portion 21b1 of the convex portions 21b1 to 21b8 closest to the support position A1 comes into contact with the outer surface 6e of the inlay core material 6. When the bending of the tip rod 2 becomes large, as shown in FIG. 5c, the convex portion 21b2 of the convex portions 21b1 to 21b8, which is the second closest to the support position A1, comes into contact with the outer surface 6e of the inlay core material 6. In this way, as the bending of the tip rod 2 increases, the convex portions 21b1 to 21b8 come into contact with the outer surface 6e of the inlay core material 6 in the order of proximity to the support position A1. Depending on the shape of the convex portions 21b1 to 21b8, two or more convex portions of the convex portions 21b1 to 21b8 may be in contact with the outer surface 6e of the inlay core material 6 at the same time when the tip rod 2 is bent.

As described above, the inlay core material 6 may be adhered to the inner peripheral surface 2b of the joint portion 2a of the tip rod 2. In this case, by inserting the portion of the inlay core material 6 protruding from the rear end 2a1 of the tip rod 2 into the hand rod 5, the tip rod 2 and the hand rod 5 are connected via the inlay core material 6. .. In this case, the vicinity of the tip of the inner peripheral surface 5b of the hand rod 5 is formed in the same manner as the vicinity of the rear end of the inner peripheral surface 2b of the tip rod 2. Specifically, an inclined surface having an uneven structure corresponding to the inclined surface 21A1 is formed near the tip of the inner peripheral surface 5b of the hand rod 5. An inclined surface 21A1 may be formed near the rear end of the inner peripheral surface of the tip rod 2, and an inclined surface having an uneven structure corresponding to the inclined surface 21A1 may be formed near the front end of the inner peripheral surface of the hand rod 5. .. By providing the inclined surface having such an uneven structure on both the tip rod 2 and the hand rod 5, it is possible to further suppress the breakage of the inlay core material 6. In this case, the inlay core material 6 may be adhered to the inner peripheral surface of the hand rod 5 or may be adhered to the inner peripheral surface of the tip rod 2.

Next, a method for manufacturing the tip rod 2 will be described with reference to FIG. In order to manufacture the tip rod 2, first, a mandrel 50 and a fiber reinforced resin sheet 51, 52, 53, 54 are prepared. The illustrated mandrel 50 has a tapered shape. In the present specification, when the width and length of the fiber-reinforced resin sheets 51, 52, 53, 54 are referred to, the W direction (width direction) and the L direction (length direction) shown as Cartesian coordinates in FIG. 6 are referred to. Will be explained based on. The central axis of the mandrel 50 extends in a direction parallel to the L direction.

The fiber reinforced resin sheets 51, 52, 53, 54 are sheet-shaped composite members in which a matrix resin is impregnated with a reinforced fiber bundle made of reinforced fibers. The reinforcing fibers contained in the fiber reinforced resin sheets 51, 52, 53, 54 are, for example, aramid fibers, carbon fibers or glass fibers. The matrix resin component contained in the fiber reinforced resin sheets 51, 52, 53, 54 is, for example, an epoxy resin, a polyphenol resin, a bisphenol A resin, a bisphenol F resin, or a combination thereof. In the illustrated embodiment, the fiber reinforced resin sheets 51, 52, 53, 54 all have a substantially trapezoidal shape. The shapes of the fiber reinforced resin sheets 51, 52, 53, 54 are not limited to the trapezoidal shape.

In one embodiment, the reinforcing fibers contained in the fiber reinforced resin sheet 51 are aligned in the circumferential direction around the central axis X. In one embodiment, the reinforcing fibers contained in the fiber reinforced resin sheet 51 are aligned in the axial direction along the central axis X. The fiber reinforced resin sheet 54 may have woven (for example, plain weave) reinforcing fibers. The orientation direction of the reinforcing fibers contained in the fiber-reinforced resin sheets 51 to 54 is not limited to the direction described in the present specification.

The fiber reinforced resin sheet 51 and the fiber reinforced resin sheet 52 have substantially the same width and the same length. The fiber-reinforced resin sheet 51 and the fiber-reinforced resin sheet 52 have a width sufficient to be wound around the mandrel 50, for example, by one ply. The fiber-reinforced resin sheet 53 has larger dimensions in the width direction and the length direction than the fiber-reinforced resin sheet 51 and the fiber-reinforced resin sheet 52. The fiber reinforced resin sheet 53 has a width sufficient to be wound around the mandrel 50, for example, by 3 plies. The dimension in the length direction of the fiber reinforced resin sheet 54 is larger than the dimension in the length direction of the fiber reinforced resin sheet 51 and the fiber reinforced resin sheet 52, and smaller than the dimension in the length direction of the fiber reinforced resin sheet 53.

As shown in FIG. 6, the fiber reinforced resin sheet 51 is arranged with respect to the mandrel 50 so that one side thereof is parallel to the central axis of the mandrel 50, and the outer circumference of the mandrel 50 is maintained while maintaining the arrangement. Wrapped around the surface. The fiber reinforced resin sheet 52 is arranged so that its right end is aligned with the right end of the fiber reinforced resin sheet 51, and is wound around the outer peripheral surface of the fiber reinforced resin sheet 51 while maintaining the arrangement. The fiber reinforced resin sheet 53 is arranged so that its right end is aligned with the right end of the fiber reinforced resin sheet 52, and is wound around the outer peripheral surface of the fiber reinforced resin sheet 52 while maintaining the arrangement. The fiber reinforced resin sheet 54 is arranged so that its right end is aligned with the right end of the fiber reinforced resin sheet 53, and is wound around the outer peripheral surface of the fiber reinforced resin sheet 53 while maintaining the arrangement.

By firing the fiber-reinforced resin sheets 51, 52, 53, 54 wound around the mandrel 50 in this way and removing the mandrel 50 after firing, a hollow tubular fired body can be obtained. The fiber-reinforced resin sheets 51, 52, 53, and 54 become the first low-rigidity layer 21, the main body protective layer 22, the main body layer 23, and the reinforcing layer 24, respectively, by firing. The inner peripheral surface of the fired fiber reinforced resin sheet 51 (first low-rigidity layer 21) is cut using a tool such as a taper reamer. By this cutting, the inclined surface 21A1 is formed on the inner peripheral surface 21A of the first low-rigidity layer 21. In one embodiment, the taper reamer is tilted inward from the rear end 2a1 of the tip rod 2 so that its axial direction is slightly tilted with respect to the central axis X (for example, at an angle within the range of 0.05 ° to 2 °). The inclined surface 21A1 is formed by inserting (inclined) and cutting the inner peripheral surface 21A of the first low-rigidity layer 21. When cutting the first low-rigidity layer 21, a part of the main body protective layer 22 provided on the outer peripheral surface of the first low-rigidity layer 21 may be cut. However, it is desirable that the main body layer 23 provided on the outer peripheral surface of the main body protective layer 22 is not cut.

The tip rod 2 can be obtained by appropriately polishing and painting the hollow tubular fired body obtained as described above.

Subsequently, a fishing rod according to another embodiment of the present invention will be described with reference to FIGS. 7 to 8. FIG. 7 is a cross-sectional view schematically showing a joint structure of a large-diameter rod body and a small-diameter rod body in a fishing rod according to another embodiment of the present invention, and FIG. 8 is a sectional view schematically showing a joint structure of the fishing rod shown in FIG. It is a schematic diagram which developed by cutting open the combined structure by the line extending in the direction of a central axis X. In the embodiment shown in FIGS. 7 and 8, the shape of the inner peripheral surface 2b of the tip rod 2 (inner peripheral surface 21A of the first low-rigidity layer 21) is the same as that of the embodiment shown in FIGS. 1 to 4. It's different. Hereinafter, the shape of the inner peripheral surface 2b of the tip rod 2 in the fishing rod according to another embodiment of the present invention will be described with reference to FIGS. 7 and 8.

The inner peripheral surface 2b of the tip rod 2 has an inclined surface 2b1 that is inclined with respect to the central axis X direction and extends forward from the rear end 2a1, and a stress relaxation surface 2b2 that extends from the position P1 of the front end of the inclined surface 2b1 to the position P2. And a cylindrical surface 2b3 extending from position P2 to position P3. The position P1 indicates a position moved forward by L1 along the central axis X from the rear end 2a1 of the tip rod 2, and the position P2 indicates a position moved forward by L2 along the central axis X from the position P1. .. The position P3 is an arbitrary position on the central axis X between the position P2 and the front end 2a2 of the tip rod 2. The length L1 is, for example, a length in the range of 1 mm to 30 mm. In one embodiment, the length L1 is in the range of 1 mm to 5 mm. The length L2 is a length equal to or less than the length L1. When the stress relaxation surface 2b2 extending forward from the position P1 becomes long (when the length L2 starting from the position P1 becomes large), the ratio of the stress relaxation surface 2b2 in the tip rod 2 becomes large. Since the stress relaxation surface 2b2 is thinned, if the length L2 becomes large, the strength near the rear end of the tip rod 2 may be insufficient. By setting the length L2 to a length of L1 or less, it is possible to prevent the tip rod 2 from becoming insufficient in strength.

The inclined surface 2b1 is inclined by a second angle θ2 larger than the first angle θ1 with respect to the central axis X and extends to P1. In other words, the virtual straight line connecting the support position A1 and the one end position A2 is inclined by a second angle θ2 larger than the first angle θ1 with respect to the central axis X. The inclined surface 2b1 has one or a plurality of irregularities like the inclined surface 21A1.

The cylindrical surface 2b3 extends from position P2 to position P3 in parallel with or substantially parallel to the central axis X direction. When the inclination of the cylindrical surface 2b3 with respect to the central axis X direction is smaller than the first angle θ1, it can be said that the cylindrical surface 2b3 extends substantially parallel to the central axis X direction. The tip rod 2 may be configured to taper from the rear end to the front end. In this case, the outer peripheral surface of the tip rod 2 is inclined and extended by a predetermined angle with respect to the central axis X direction. The cylindrical surface 2b3 may be extended in parallel with the outer peripheral surface of the tip rod 2.

The stress relaxation surface 2b2 is a portion of the inner peripheral surface 2b of the tip rod 2 between the inclined surface 2b1 and the cylindrical surface 2b3. The stress relaxation surface 2b2 has inclined portions 121a, 121b, 121c, 121d and non-inclined portions 122. For convenience of explanation, the inclined portions 121a, 121b, 121c, 121d may be collectively referred to as the inclined portion 121. The boundary 123a between the inclined portion 121 and the non-inclined portion 122 has a waveform that is convex rearward from the boundary 123b between the inclined surface 2b1 and the stress relaxation surface 2b2. The boundary 123b extends in the circumferential direction around the central axis X. In the present specification, the boundary 123a may be referred to as a stress relaxation boundary, and the boundary 123b may be referred to as a aligned position boundary (or a support position boundary).

The inclined portion 121 is continuous with the inclined surface 2b1 at the rear end. That is, the rear end of the inclined portion 121 is at the position P1. Each of the inclined portions 121 extends forward along the central axis X from the position P1. The front ends of the inclined portions 121 may be different from each other. In the illustrated embodiment, four inclined portions 121a, 121b, 121c, and 121d are provided as described above, of which the inclined portion 121a extends to the position P1 which is the boundary with the cylindrical surface 2b3. There is. The inclined portion 121a extends to the frontmost of the four inclined portions. The inclined portion 121b, the inclined portion 121c, and the inclined portion 121d extend from the position P1 to a position between the positions P1 and the position P2.

Each of the inclined portions 121 is inclined by a second angle θ2 larger than the first angle θ1 with respect to the central axis X, similarly to the inclined surface 2b1. The angle of the inclined portion 121 with respect to the central axis X direction may differ depending on the position in the circumferential direction around the central axis X. For example, the angle formed by the inclined portion 121a in the central axis X direction may be different from the angle formed by the inclined portion 121b in the central axis X direction. Further, the angle formed by the inclined portion 121a at the position B1 in the circumferential direction with respect to the central axis X direction may be different from the angle formed by the inclined portion 121a with respect to the central axis X direction at the position B2 in the circumferential direction. That is, the angle formed by the inclined portion 121a with respect to the central axis X direction may differ depending on the position in the circumferential direction. This also applies to the inclined portions 121b, 121c, 121d. The angle formed by the inclined portion 121 with respect to the central axis may be the same as or different from the angle formed by the inclined surface 2b1 with respect to the central axis.

The stress relaxation surface 2b2 will be further described with reference to FIGS. 9 and 10. FIG. 9 is a view showing a cross section of the tip rod 2 perpendicular to the central axis X and cut at a surface passing through the position B1, and FIG. 10 is a surface showing the tip rod 2 perpendicular to the central axis X and passing through the position C1. It is a figure which shows the cross section cut by. Position C1 is ahead of position B1 in the direction along the central axis X.

As described above, the inclined portion 121a is inclined at an angle larger than the first angle θ1 with respect to the central axis X, while the non-inclined portion 122 extends parallel to or substantially parallel to the central axis X. Therefore, as shown in the cross-sectional view of FIG. 9, the stress relaxation surface 12b2 is located between the positions B1 and B2 in the circumferential direction, between the positions B3 and B4, and between the positions B5 and B6. The inclined portion 121a in between is recessed toward the radial outer side of the tip rod 2. Similarly, in the cross section shown in FIG. 6, the stress relaxation surface 2b2 faces radially outward of the tip rod 2 between the positions C1 and C2 in the circumferential direction and between the positions C3 and C4. And dent.

When the fishing rod 1 is used, the tip rod 2 bends downward in FIG. 9, so that the lower portion of the tip rod 2 is compressed. Of the tip rod 2, the part to be compressed is a portion within a predetermined angle range about the lower end of the tip rod 2. The lower end of the tip rod 2 indicates the position of 0 ° in FIG. A compressive force particularly acts on a region of ± 30 ° around this 0 ° position. The region within ± 30 ° in the circumferential direction from the lower end of the tip rod 2 is called the compression region R1.

In the illustrated embodiment, since the fishing line guide 7 is provided at the upper end of the tip rod 2 (and the hand rod 5), the compression region R1 is on the side opposite to the mounting position of the fishing line guide 7 in the circumferential direction around the central axis X. It is in. To explain with reference to FIG. 8, the fishing line guide 7 is provided at a position of 180 ° in the circumferential direction, and the compression region R1 is at a position of ± 30 ° with respect to the position of 0 °. In another embodiment in which the spinning reel is used, the fishing line guide 7 is provided at a position of 0 ° in the circumferential direction, so that the compression region R1 is provided below the tip rod 2 like the fishing line guide 7.

At least one of the inclined portions 121a, 121b, 121c, and 121d is provided in this compression region R1. In the illustrated embodiment, the inclined portion 121a is provided in the compression region R1. The entire inclined portion 121a may be provided in the compression region R1, or a part thereof may be provided in the compression region R1.

As described above, the stress relaxation surface 2b2 has a non-inclined portion 122 and an inclined portion 121a recessed from the inclined portion 122 in the radial direction of the tip rod 2. The shape and arrangement of the inclined portion 121a on the stress relaxation surface 2b2 is not limited to that shown in the figure.

In the illustrated embodiment, a portion of the non-tilted portion 122 extends from position P2 to position P1. In other words, the rear end of a part of the non-tilted portion 122 is located at the position P1 in the X direction of the central axis. The total length (length a in FIG. 8) of the stress relaxation surface 2b2 in the circumferential direction of the non-tilted portion 122 at the position P1 in the central axis X direction (corresponding to the length b1 + b2 + b3 + b4 in FIG. 8). The ratio to (corresponding to) is 0.5 or more. That is, (b1 + b2 + b3 + b4) / a is 0.5 or more (50% or more when expressed as a percentage).

As described above, for the production of the tip rod 2 in one embodiment, a prepreg sheet in which carbon fibers are impregnated with a synthetic resin is fired to produce a tubular fired body. The inclined surface 2b1 and the stress relaxation surface 2b2 of the tip rod 2 are obtained by processing the inner peripheral surface of this tubular fired body by using a tool such as a taper reamer. In one embodiment, inside the tip rod 2, the taper reamer is tilted so that its axial direction is slightly tilted with respect to the central axis X (for example, tilted at an angle within the range of 0.05 ° to 2 °). It is inserted to form an inclined surface 2b1 by scraping the inner peripheral surface of the tip rod 2, and then using a smaller diameter reamer (for example, a pin reamer) than the inclined surface 2b1 of the inner peripheral surface of the tip rod 2. The inclined portion 121a may be formed by scraping the region in the back. In another embodiment, first, a pin reamer is used to scrape the inner peripheral surface of the tip rod 2 to form a fine groove corresponding to the inclined portion 121a, and then a taper reamer is used to form the inner peripheral surface of the tip rod 2. The inclined surface 2b1 and the inclined portion 121a may be formed by cutting shallower than the fine groove. In this way, the inclined surface 2b1 and the stress relaxation surface 2b2 provided with the inclined portion 121a can be formed. Either the inclined surface 2b1 or the inclined portion 121a may be formed first, or both may be formed at the same time.

As described above, the inlay core material 6 may be adhered to the inner peripheral surface 2b of the joint portion 2a of the tip rod 2. In this case, by inserting the portion of the inlay core material 6 protruding from the rear end 2a1 of the tip rod 2 into the hand rod 5, the tip rod 2 and the hand rod 5 are connected via the inlay core material 6. .. In this case, the vicinity of the tip of the inner peripheral surface 5b of the hand rod 5 is formed in the same manner as the vicinity of the rear end of the inner peripheral surface 2b of the tip rod 2. Specifically, an uneven structure corresponding to the inclined surface 2b1 and the stress relaxation surface 2b2 is formed near the tip of the inner peripheral surface 5b of the hand rod 5.

An inclined surface 2b1 and a stress relaxation surface 2b2 are formed near the rear end of the inner peripheral surface of the tip rod 2, and an uneven structure corresponding to the inclined surface 2b1 and the stress relaxation surface 2b2 is formed near the front end of the inner peripheral surface of the hand rod 5. May be formed. By providing such an uneven structure on both the tip rod 2 and the hand rod 5, breakage can be further suppressed. In this case, the inlay core material 6 may be adhered to the inner peripheral surface of the hand rod 5 or may be adhered to the inner peripheral surface of the tip rod 2.

Next, the fishing rod 101 according to another embodiment of the present invention will be described with reference to FIG. FIG. 11 is a cross-sectional view schematically showing a joint structure in a fishing rod 101 according to another embodiment of the present invention.

The fishing rod 101 is a parallel type fishing rod. The fishing rod 101 has a hand rod 102 and a tip rod 105 joined to the tip of the tip of the hand rod 102. The tip rod 105 is configured to have a smaller diameter than the hand rod 102. Like the tip rod 2, the hand rod 102 is provided on the first low-rigidity layer 21, the main body protective layer 22 provided on the outer surface of the first low-rigidity layer 21, and the outer surface of the main body protective layer 22. The main body layer 23 and the reinforcing layer 24 provided on the outer surface of the main body layer 23 may be provided.

When the outer peripheral surface 105a of the tip rod 105 is inserted from the front end of the hand rod 102 to the inward alignment position, the outer peripheral surface 105a of the tip rod 105 is the hand rod at the support position behind the front end of the hand rod 102. It touches the inner peripheral surface of 102. At this support position, the outer diameter of the tip rod 105 and the inner diameter of the hand rod 102 coincide with or substantially coincide with each other. In the embodiment of FIG. 11, the rear end portion of the tip rod 105 (the end portion on the side closer to the hand rod 102) corresponds to the shaft member inserted into the rod body.

The inner peripheral surface 102b of the hand rod 102 is configured in the same manner as the inner peripheral surface 2b (inner peripheral surface 21A of the first low-rigidity layer 21) of the tip rod 2 shown in FIGS. 3 and 4. That is, the inner peripheral surface 102b of the hand rod 102 is parallel to the inclined surface corresponding to the inclined surface 21A1 having an uneven structure and the inclined surface to the central axis X, similarly to the inner peripheral surface 21A of the first low-rigidity layer 21. With a parallel plane extending to. The uneven structure of the inner peripheral surface 102b of the hand rod 102 is, for example, a plurality of concave portions (for example, eight concave portions 21a1 to 21a8) and a plurality of convex portions in the same manner as the uneven structure of the inclined surface 21A1 shown in FIG. (For example, eight convex portions 21b1 to 21b8) may be provided. Although not shown, an inclined portion similar to the inclined portion 6b of the inlay core material 6 is provided on the outer peripheral surface 105a of the tip rod 105.

Although FIG. 11 shows only two rods, the hand rod 102 and the tip rod 105, the parallel type fishing rod may be one in which three or more rods are joined. Each rod body constituting the parallel type fishing rod can be joined by using a joint structure similar to the joint structure of the hand rod 102 and the tip rod 105.

Next, with reference to FIG. 12, a fishing rod according to still another embodiment of the present invention will be described. FIG. 12 is a cross-sectional view schematically showing a joint structure in a fishing rod according to another embodiment of the present invention. The fishing rod shown in FIG. 12 is different from the fishing rod shown in FIG. 3 in that the inclined surface 21A1 of the first low-rigidity layer 21 does not have an uneven structure. In the embodiment shown in FIG. 12, the inner peripheral surface 21A of the first low-rigidity layer 21 is composed of a flat surface inclined by an angle θ2 with respect to the central axis X.

Subsequently, the action and effect of the above embodiment will be described. In one of the above embodiments, the tip rod 2 has a first low-rigidity layer 21 containing reinforcing fibers in the innermost layer thereof, and a main body layer 23 having reinforcing fibers radially outside the first low-rigidity layer 21. Have. Since the bending rigidity of the first low-rigidity layer 21 is smaller than the bending rigidity of the main body layer 23, even if the first low-rigidity layer 21 is cut to form the inclined surface 21A, the bending rigidity of the tip rod 2 is in the axial direction. The effect on the flexural rigidity profile is small. In other words, by providing the first low-rigidity layer 21, it is possible to form an inclined surface on the inner peripheral surface of the tip rod 2 without significantly affecting the bending rigidity profile of the tip rod 2. In one embodiment, the main body protective layer 22 (second low-rigidity layer 22) may be provided inside the main body layer 23 in the radial direction. Since the bending rigidity of the second low-rigidity layer 22 is also smaller than the bending rigidity of the main body layer 23, even if the second low-rigidity layer 22 is cut in addition to the first low-rigidity layer 21 in order to form the inclined surface 21A1, the tip of the tip The effect on the flexural rigidity profile of the rod 2 in the axial direction is small.

In the above embodiment, the tensile elastic modulus of the reinforcing fiber contained in the first low-rigidity layer 21 is 1 t / mm ² or more. As a result, it is possible to suppress deformation of the first low-rigidity layer 21 due to stress acting on the inner peripheral surface 21A of the first low-rigidity layer 21 from the in-row core material 6 at a position in contact with the in-row core material 6. Therefore, the inlay core material 6 can be firmly held by the inner peripheral surface 21A of the first low-rigidity layer 21.

In the above embodiment, the reinforcing fibers included in the first low-rigidity layer 21 are oriented in the circumferential direction around the central axis X. As a result, it is possible to prevent the vicinity of the rear end of the tip rod 2 from being crushed without significantly affecting the bending profile of the tip rod 2.

The fishing rod 1 in the above embodiment is a hollow core material supported by a hollow tip rod 2 and an inner peripheral surface 2b of the tip rod 2 (inner peripheral surface 21A of the first low-rigidity layer 21) at a support position A1. 6 and. The inner peripheral surface 2b of the tip rod 2 (inner peripheral surface 21A of the first low-rigidity layer 21) protrudes from the virtual curve Y toward the central axis X between the support position A1 and the one end position A2 in the axial direction. It has convex portions 21b1 to 21b8. Therefore, as described with reference to FIGS. 5a to 5c, when the tip rod 2 bends, the convex portions 21b1 to 21b8 come into contact with the outer surface 6e of the inlay core material 6. As a result, when the tip rod 2 is bent, the inlay core material 6 is not supported by the inner peripheral surface 21A of the first low-rigidity layer 21 at only one point of the support position A1 in the axial direction, but is convex. It is also supported by at least a portion of portions 21b1-21b8. As a result, the stress acting on the inlay core material 6 from the inner peripheral surface 2b of the tip rod 2 is not concentrated at one point (support position A1) in the central axis X direction, but has a spread in the central axis X direction. Can be distributed over a wide range. Thereby, the breakage of the inlay core material 6 can be suppressed.

In the above embodiment, when the tip rod 2 is not bent, the convex portions 21b1 to 21b8 are radially outside the outer surface 6e of the inlay core material 6. As a result, the inlay core material 6 can be inserted into the tip rod 2 to a predetermined alignment position without causing the inlay core material 6 to interfere with the inner peripheral surface of the tip rod 2.

In the above embodiment, the inner peripheral surface 2b of the tip rod 2 into which the inlay core material 6 is inserted has an inclined surface 2b1, a stress relaxation surface 2b2, and a cylindrical surface 2b3 in the vicinity of the rear end thereof. There is. The stress relaxation surface 2b2 has inclined portions 121a, 121b, 121c, 121d and non-inclined portions 122. The inclined surface 121 and the inclined portions 121a, 121b, 121c, 121d extend at an inclination angle larger than the inclination angle of the outer peripheral surface of the inlay core material 6 with respect to the central axis X direction, whereas the inclined surface 121 and the inclined portions 121a, 121b, 121c, 121d extend at an inclination angle larger than the inclination angle of the outer peripheral surface of the inlay core material 6. The inclined portion 122 extends parallel to or substantially parallel to the central axis X direction. When the inlay core material 6 is fitted to the inner peripheral surface 2b of the tip rod 2, the inner peripheral surface 2b of the tip rod 2 comes into contact with the inlay core material 6 at the alignment position boundary 123b. In this way, the tip rod 2 is supported by the inlay core material 6 at the boundary 123b. When the tip rod 2 and the hand rod 5 bend when the fishing rod 1 is used, the inner peripheral surface 2b of the tip rod 2 comes into contact with the inlay core material 6 not only at the alignment position boundary 123b but also at the stress relaxation boundary 123a. Since the stress relaxation boundary 123b has a corrugated shape that becomes convex toward the rear end side in the central axis X direction, the stress acting on the inlay core material 6 from the inner peripheral surface 2b of the tip rod 2 is the alignment position boundary 123b. It acts not only at the position P1 in the central axis X direction in which the is arranged, but also at the position shifted rearward from this position P1 in the central axis X direction. That is, the stress acting on the inlay core material 6 from the inner peripheral surface 2b of the tip rod 2 is dispersed in a range having a spread in the central axis X direction instead of one point (position of P1) in the central axis X direction. Can be done. For example, FIG. 8 shows a position A, a position B1, a position C1, and a position D existing on the stress relaxation boundary 123a, and the positions A, the position B1, the position C1, and the position D are in the central axis X direction. Are located in different positions. Before the tip rod 2 bends, the inner peripheral surface 2b of the tip rod 2 is in contact with the inlay core material 6 at the alignment position boundary 123b. When the tip rod 2 and the hand rod 5 bend, the stress relaxation boundary 123b comes into contact with the inlay core material 6 in order from the portion closest to the alignment position boundary 123b. Since the conventional splicing structure does not have a structure corresponding to the stress relaxation surface 2b2, the stress on the inlay core material concentrates on one point in the axial direction at the rear end of the tip rod 2. It is the cause of the destruction of the inlay core material. On the other hand, in the above embodiment, the stress relaxation surface 2b2 disperses the stress on the inlay core material 6 in the X direction of the central axis and acts, so that the destruction of the inrow core material can be suppressed.

In the joint structure of the parallel type fishing rod 101 shown in FIG. 11, the stress acting on the tip rod 105 from the inner peripheral surface of the hand rod 102 can be dispersed in the central axis direction for the same reason. As a result, the destruction of the tip rod 105 can be suppressed.

In the above embodiment, the ratio of the circumferential length of the non-tilted portion 122 at the position P1 in the central axis X direction to the total length of the inner peripheral surface of the stress relaxation surface 2b2 in the circumferential direction is 0.5 or more. As a result, the stress on the inlay core material 6 or the tip rod 105 is dispersed in the direction of the central axis, and the inlay core material 6 or the tip rod 105 is reliably held at the position P1 (support position A1) to be the alignment position. Can be done.

The above-mentioned action and effect are particularly exhibited by the inclined portions 121a, 121b, 121c, 121d that are present in the compression region R1. Of the inclined portions 121a, 121b, 121c, 121d, those outside the compression region R1 may be omitted.

The dimensions, materials, and arrangement of each component described herein are not limited to those expressly described in the embodiments, and each component may be included in the scope of the present invention. Can be modified to have the dimensions, materials, and arrangement of. In addition, components not explicitly described in the present specification may be added to the described embodiments, or some of the components described in each embodiment may be omitted.

1,101 Fishing rod 2,105 Tip rod 5,102 Hand rod 6 Inlay core material 21 First low-rigidity layer 21A1 Inclined surface 21A2 Parallel surface 22 Main body protective layer 23 Main body layer 24 Protective layer 121a, 121b, 121c, 121d Inclined part 122 Non-sloping part

Claims (10)

A hollow rod that extends from one end to the other along the central axis,
It has an outer peripheral surface that is inclined by a first angle with respect to the central axis, is inserted into the rod body from the one end, and is at a support position on the other end side of the one end in the axial direction along the central axis. A shaft member supported on the inner peripheral surface of the rod body,
Equipped with
The rod body is provided on the innermost side in the radial direction and includes a first low-rigidity layer containing a first reinforcing fiber, and a main body provided on the outer side in the radial direction of the first low-rigidity layer and containing a second reinforcing fiber. Including layers,
The bending rigidity of the first low-rigidity layer is smaller than the bending rigidity of the main body layer.
The inner peripheral surface of the first low-rigidity layer has an inclined surface extending from one end thereof to the support position at a second angle larger than the first angle with respect to the central axis.
fishing rod. The first reinforcing fiber has a tensile elastic modulus of 300 kgf / mm ² or more.
The fishing rod according to claim 1. The first reinforcing fiber is oriented in the circumferential direction around the central axis.
The fishing rod according to claim 1 or 2. A second low-rigidity layer is provided between the first low-rigidity layer and the main body layer.
The bending rigidity of the second low-rigidity layer is smaller than the bending rigidity of the main body layer.
The fishing rod according to any one of claims 1 to 3. The rod body has a reinforcing layer provided on the radial outer side of the main body layer at a position overlapping with the first low-rigidity layer in the axial direction along the central axis.
The fishing rod according to any one of claims 1 to 4. The axial length of the reinforcing layer is longer than the axial length of the first low-rigidity layer.
The fishing rod according to claim 5. The inclined surface has irregularities.
The fishing rod according to any one of claims 1 to 6. The inner peripheral surface of the rod has a parallel surface extending from the support position to the other end side in parallel with or substantially parallel to the central axis.
The fishing rod according to any one of claims 1 to 7. The shaft member is an inlay core material.
The fishing rod according to any one of claims 1 to 8. The shaft member is another rod body having a diameter smaller than that of the rod body.
The fishing rod according to any one of claims 1 to 9.

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