Joint member and fishing rod equipped with same

Abstract

To provide a fishing rod capable of flexibly selecting a butt section and a tip section by enabling joining of the butt section and the tip section having various sizes and shapes.SOLUTION: A joint member capable of detachably attaching a front-side rod body 11 and a rear-side rod body 12, includes a first joint part 13 formed into a cylindrical shape and to which the front-side rod body 11 can be attached, a second joint part 14 formed into a cylindrical shape and to which the rear-side rod body 12 can be attached, and a central part 15 for connecting them together. A fishing rod is so configured that the front-side rod body 11 can be attached to an inner face or an outer face of the first joint part 13, and the rear-side rod body 12 can be attached an inner face or an outer face of the second joint part 14.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a joint member and a fishing rod including the same. [Background technology]

[0002] 2. Description of the Related Art Conventionally, various fishing rods are known that have a joint between a rod body (tip section) and a rod body (base section).

[0003] As an example of such a fishing rod, Patent Document 1 discloses a through-rod that is assembled by connecting multiple separate rods to both ends of a connecting tube, in which an inclined hole is formed from the side of the connecting tube into which a guide tube is screwed in to introduce the fishing line into the rod from outside the rod, and the inner wall surface of the inclined hole is formed with a female threaded portion that screws into a male threaded portion formed on the outer periphery of the guide tube, and the guide tube is attached to the inclined hole of the connecting tube with fishing line guide rings held on both ends.

[0004] Furthermore, Patent Document 2 discloses that at the joint of a fishing rod, a conically molded insertion portion, an axis passing through the center of the conical insertion portion, and a tip portion or a belly portion having a hollow structure with a conically excavated receiving mouth inside are joined together, thereby increasing the adhesive surface area of ​​the joint, dispersing stress, and improving strength, thereby making it possible to shorten the overall length of the joint and achieving a natural bending of the fishing rod. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Utility Model Application No. 06-004548 [Patent Document 2] JP 2015-226526 A Summary of the Invention [Problem to be solved by the invention]

[0006] However, in the fishing rods disclosed in all of the patent documents, although the tip section and base section are configured to be detachable, the premise is that the tip section and base section must be designed to match the dimensions and shape of the joint that joins them. This naturally imposes restrictions on the dimensions and shape of the tip section and base section, and even if multiple tip sections and base sections are configured to be interchangeable, there is a problem in that in effect the freedom to replace them is significantly reduced.

[0007] The present invention has been made in consideration of the above circumstances, and its object is to provide a joint member and a fishing rod equipped with the same, which allows for flexible selection of the base section and tip section by allowing the base section and tip section to be joined together in various sizes and shapes while allowing both the base section and the tip section to be detached, thereby making it possible to meet the various and differing needs of fishing rod users. Other objects of the present invention will become apparent by referring to the entire specification. [Means for solving the problem]

[0008] A joint member according to one embodiment of the present invention is a joint member that allows the front and rear rod bodies of a fishing rod to be detachably attached and attached, and comprises a first joint portion formed in a cylindrical shape and to which the front rod body can be attached, a second joint portion formed in a cylindrical shape and to which the rear rod body can be attached, and a central portion connecting these, and the front rod body can be attached to the inner or outer surface of the first joint portion, and the rear rod body can be attached to the inner or outer surface of the second joint portion.

[0009] In the joint member according to one embodiment of the present invention, the inner diameter of the first joint portion is smaller than the inner diameter of the second joint portion.

[0010] In the joint member according to one embodiment of the present invention, the outer diameter of the first joint portion is smaller than the outer diameter of the second joint portion.

[0011] In the joint member according to one embodiment of the present invention, the inner diameter of the inner surface of the first joint portion increases in the direction opposite to the central portion.

[0012] In one embodiment of the joint member according to the present invention, the central portion has a hollow portion, and the inner diameter of the central portion increases from a first end portion on the first joint side to a second end portion on the second joint side.

[0013] In a joint member according to one embodiment of the present invention, the central portion has a hollow portion, and the inner diameter of the central portion is constant from a first end portion on the first joint side to a second end portion on the second joint side.

[0014] In the joint member according to one embodiment of the present invention, the central portion has an outer diameter larger than the outer diameter of the first joint portion and equal to or smaller than the outer diameter of the second joint portion.

[0015] A joint member according to one embodiment of the present invention is made of a fiber-reinforced resin material, and is formed of a plurality of fiber-reinforced resin layers having different fiber directions in a radial direction.

[0016] A fishing rod according to one embodiment of the present invention comprises any of the joint members described above, the front rod body, and the rear rod body. Effect of the Invention

[0017] According to the above embodiment, it is possible to provide a joint member and a fishing rod equipped with the same, which allows for flexible selection of the base section and tip section by making both the base section and the tip section detachable and allowing the base section and tip section to be joined together in a variety of sizes and shapes, thereby meeting the various and varied needs of fishing rod users. [Brief description of the drawings]

[0018] [Figure 1] 1 is a diagram showing a fishing rod according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a diagram illustrating a joint member according to an embodiment of the present invention. [Diagram 3] FIG. 2 is a diagram illustrating a joint member according to an embodiment of the present invention. [Figure 4]FIG. 2 is a diagram illustrating a joint member according to an embodiment of the present invention. [Diagram 5] FIG. 2 is a diagram illustrating a joint member according to an embodiment of the present invention. [Figure 6] FIG. 2 is a diagram showing a joint member according to an embodiment of the present invention. [Figure 7] FIG. 2 is a diagram showing a joint member according to an embodiment of the present invention. [Figure 8] FIG. 2 is a diagram showing a joint member according to an embodiment of the present invention. [Figure 9] FIG. 2 is a diagram illustrating a layer structure of a joint member according to one embodiment of the present invention. [Figure 10] FIG. 2 is a diagram illustrating a layer structure of a joint member according to one embodiment of the present invention. [Figure 11] FIG. 2 is a diagram illustrating a layer structure of a joint member according to one embodiment of the present invention. [Figure 12] FIG. 2 is a diagram illustrating a layer structure of a joint member according to one embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] Hereinafter, an embodiment of a fishing rod according to the present invention will be described in detail with reference to the accompanying drawings. Components common to multiple drawings are designated by the same reference numerals throughout the multiple drawings. Please note that the drawings are not necessarily drawn to scale for the sake of convenience.

[0020] 1 is a diagram showing one embodiment of a fishing rod according to the present invention. As shown in the figure, a fishing rod 1 according to one embodiment of the present invention comprises a rod body 2, a reel 6 attached to the rod body 2 via a reel seat 9, and a fishing line guide 10 attached to the rod body 2. In the illustrated embodiment, each of the reel seat 9 and the fishing line guide 10 corresponds to an attachment part attached to the outer circumferential surface of the rod body.

[0021] The rod body 2 is formed by connecting, for example, a butt rod 3, a middle rod 5, and a tip rod 7. These rod bodies are joined, for example, in a parallel joint. The butt rod 3, middle rod 5, and tip rod 7 can be joined by a telescoping type, a reverse parallel joint type, a spigot joint type, or any other known joint type. The rod body 2 may be formed from a single rod body.

[0022] The base rod 3, the middle rod 5, and the tip rod 7 are each formed of, for example, a tubular body made of fiber-reinforced resin. This tubular body made of fiber-reinforced resin is produced by winding a fiber-reinforced resin prepreg (prepreg sheet) in which reinforcing fibers are impregnated with a matrix resin around a core bar, and heating and curing the prepreg sheet. As the reinforcing fibers contained in the prepreg sheet, for example, carbon fiber, glass fiber, and any other known reinforcing fibers can be used. As the matrix resin contained in the prepreg sheet, a thermosetting resin such as an epoxy resin can be used. After the prepreg sheet is cured, the core bar is de-cored. In addition, the outer surface of the tubular body is appropriately polished. Each rod body may be formed in a solid shape.

[0023] In the illustrated embodiment, the butt rod 3, middle rod 5 and tip rod 7 are provided with a number of line guides 10 (line guides 10A-10D) that guide the fishing line that is let out from the reel 6 attached to the reel seat 9. More specifically, the butt rod 3 is provided with line guide 10A, the middle rod 5 is provided with line guide 10B, and the tip rod 7 is provided with line guide 10C. A top guide 10D is provided at the tip of the tip rod 7, but details will be omitted.

[0024] A joint member 4 (also called a joint part or joint structure) described later is provided between the tip rod 7 and the middle rod 5, and the tip rod 7 and the middle rod 5 are detachably attached to the joint member 4, making it possible to attach tip rods 7 and middle rods 5 of various shapes and sizes, as described later. Hereinafter, the tip rod 7 will be referred to as the front rod body or tip section, and the middle rod 5 will be referred to as the rear rod body or base section. Also, when referring to the rear rod body or base section, both the middle rod 5 and the base rod 3 can be included.

[0025] Next, the reel seat 9 will be briefly described. The reel seat 9 includes a reel seat body having a reel leg mounting surface (reel leg mounting portion) along its axial direction on which the reel leg (not shown) of the fishing reel 6 is placed. The reel seat body is formed into a cylindrical shape as a whole. The reel seat body is formed of an appropriate material such as synthetic resin (e.g., polyamide synthetic fiber, ABS resin, etc.) or metal (e.g., SUS, aluminum, titanium, brass, etc.). The reel seat body can be configured to have a length of, for example, 60 to 160 mm, but is not limited thereto. The reel seat body is formed with a grip portion having a curved outer surface that is slightly bulged on the opposite side to the reel leg mounting surface and supports the ball of the foot or the vicinity thereof when gripped by the gripping hand, making it easy to grip.

[0026] The reel leg mounting surface of the reel seat body can be formed flat or substantially flat with a larger curvature than other circumferential portions (e.g., grip portion) adjacent to the reel leg mounting surface of the reel seat body, and is formed to extend in the axial direction of the reel seat body. A fixed hood is integrally disposed at one end (rod base side) of the reel seat body. One end of the reel leg mounting surface of the reel seat body is disposed inside the fixed hood.

[0027] Next, a joining member according to one embodiment of the present invention will be described with reference to FIGS. First, as shown in FIG. 2-5, the joint member 4 according to one embodiment of the present invention is a joint member 4 that allows the front rod body 11 and the rear rod body 12 of the fishing rod 1 to be detachably attached, and includes a first joint portion 13 formed in a cylindrical shape to which the front rod body 11 can be attached, a second joint portion 14 formed in a cylindrical shape to which the rear rod body 12 can be attached, and a central portion 15 that connects them. The front rod body 11 can be attached to the inner surface (in the case of FIG. 2 and 3, also called a parallel joint) or the outer surface (in the case of FIG. 4 and 5, also called a reverse parallel joint) of the first joint portion, the rear rod body 12 can be attached to the inner surface (in the case of FIG. 2 and 4, also called a reverse parallel joint) or the outer surface (in the case of FIG. 3 and 5, also called a parallel joint) of the second joint portion, and the rear rod body can be attached to the inner surface or the outer surface of the second joint portion. The central portion 15 has a hollow portion 16, and the inner diameter is the same from the first joint portion 13 to the second joint portion 14 (here, "same" does not only mean mathematically the same, but also means approximately the same, that is, even if used in reverse front and back, there is not much difference (for example, an inner diameter difference of about ±0.04 mm in consideration of the possibility of an inner diameter difference between the first joint portion 13 side and the second joint portion 14 side), but the outer diameter is formed so that the central portion is raised. In this embodiment, the outer diameter or inner diameter of the front rod body and the rear rod body are the same or different, and it is assumed that they will be attached when there is not much difference compared to the embodiment of Figure 6 described later.

[0028] According to the joining member of one embodiment of the present invention, both the base section and the tip section are detachable, while base sections and tip sections of various sizes and shapes can be joined, allowing for flexible selection of base section and tip section, thereby making it possible to provide a joining member that can meet the various different demands of fishing rod users.

[0029] Next, referring to FIG. 6, a joint member 4 according to one embodiment of the present invention will be described. As shown in the figure, the joint member 4 according to one embodiment of the present invention is a joint member 4 that allows a front rod body (not shown) and a rear rod body (not shown) of a fishing rod 1 to be detachably attached, and includes a first joint part 13 formed in a cylindrical shape to which the front rod body can be attached, a second joint part 14 formed in a cylindrical shape to which the rear rod body can be attached, and a central part 15 that connects them. The front rod body can be attached to the inner or outer surface of the first joint part 13, and the rear rod body can be attached to the inner or outer surface of the second joint part 14. The central part 15 includes a hollow part 16, and is formed so that both the inner diameter and the outer diameter become larger from the first joint part 13 to the second joint part 14. In this embodiment, it is assumed that the outer diameter or the inner diameter of the front rod body and the rear rod body are more greatly different from each other than in the embodiment of FIG. 2.

[0030] According to the joining member of one embodiment of the present invention, both the base section and the tip section are detachable, while base sections and tip sections of various sizes and shapes can be joined, allowing for flexible selection of base section and tip section, thereby making it possible to provide a joining member that can meet the various different demands of fishing rod users.

[0031] Next, a joint member 4 according to one embodiment of the present invention will be described with reference to Fig. 7. As shown in the figure, the joint member 4 according to one embodiment of the present invention is a joint member 4 that allows a front rod body (not shown) and a rear rod body (not shown) of a fishing rod 1 to be detachably attached, and includes a first joint portion 13 formed in a cylindrical shape to which the front rod body 11 can be attached, a second joint portion 14 formed in a cylindrical shape to which the rear rod body 12 can be attached, and a central portion 15 that connects them. The front rod body 11 can be attached to the inner surface of the first joint portion 13, and the rear rod body 12 can also be attached to the inner surface of the second joint portion 14. The central portion 15 includes a hollow portion 16, and is formed so that both the inner diameter and the outer diameter become larger from the first joint portion 13 to the second joint portion 14. In this embodiment, the joint member is formed so that its rigidity increases from the tip to the base of the rod, making it possible to form a joint with few seams and good connection between the flexible and sensitive tip section and the sturdy base section that is easy to operate.

[0032] Next, a joint member 4 according to one embodiment of the present invention will be described with reference to Fig. 8. As shown in the figure, the joint member 4 according to one embodiment of the present invention is a joint member 4 that allows a front rod body (not shown) and a rear rod body (not shown) of a fishing rod 1 to be detachably attached, and includes a first joint portion 13 formed in a cylindrical shape to which the front rod body 11 can be attached, a second joint portion 14 formed in a cylindrical shape to which the rear rod body 12 can be attached, and a central portion 15 that connects them. The front rod body 11 can be attached to the inner surface of the first joint portion 13, and the rear rod body 12 can be attached to the outer surface of the second joint portion 14. The central portion 15 includes a hollow portion 16, and is formed so that both the inner diameter and the outer diameter become smaller from the first joint portion 13 to the second joint portion 14, in contrast to the case of Fig. 7. In this embodiment, the joint member is formed so that its rigidity decreases from the tip to the base of the rod, making it possible to form a joint between the tip section, which ensures rigidity, and the base section, which is sturdy and easy to operate, that has a seam but can withstand heavier weights.

[0033] In the joint member 4 according to one embodiment of the present invention, the inner diameter of the first joint portion 13 is formed to be smaller than the inner diameter of the second joint portion 14. In this manner, it becomes possible to join rod bodies having different outer diameters.

[0034] In the joint member 4 according to one embodiment of the present invention, the outer diameter of the first joint portion 13 is formed to be smaller than the outer diameter of the second joint portion 14. In this way, it becomes possible to join rod bodies having different outer diameters.

[0035] In the joint member 4 according to one embodiment of the present invention, the inner surface of the first joint portion 13 is configured so that the inner diameter increases in the direction opposite to the center portion 15. In this way, the outer diameter and shape of the joint portion of the front rod body 11 are made close to the outer diameter of the joint portion 13, and by joining them, the rigidity of the front rod body 11 and the engaging portion 13 becomes close, improving the connection (making the rod body 2 bend smoothly).

[0036] In the joint member 4 according to one embodiment of the present invention, the central portion 15 has a hollow portion 16, and the central portion 15 is configured so that its inner diameter increases from the first end portion 17 on the side of the first joint portion 13 to the second end portion 18 on the side of the second joint portion 14. In this way, it is possible to adjust the rigidity of the joint member 4, adjust the diameter with the rod body to be joined, and join with rod bodies of different outer diameters.

[0037] In the joint member 4 according to one embodiment of the present invention, the central portion 15 has a hollow portion 16, and the hollow portion 16 is configured so that its inner diameter is the same from the first end portion 17 on the side of the first joint portion 13 to the second end portion 18 on the side of the second joint portion 14. In this way, it is possible to use the joint member 4 by flipping it back and forth to join to a rod body having the same outer diameter, or to join to the same rod body.

[0038] In the joint member 4 according to one embodiment of the present invention, the central portion 15 is formed so that its outer diameter is larger than the outer diameter of the first joint portion 13 and is equal to or smaller than the outer diameter of the second joint portion 14. In this way, the diameter gradually increases from the tip to the base, making it possible to form a natural appearance.

[0039] The joint member 4 according to one embodiment of the present invention is made of a fiber-reinforced resin material, and is formed of a plurality of fiber-reinforced resin layers with different fiber directions in the radial direction. In this way, it is possible to reduce the weight while maintaining the strength. Here, the fibers of the fiber-reinforced resin material may be, but are not limited to, carbon fibers, glass fibers, or boron fibers. Also, the resin of the fiber-reinforced resin material may be, but is not limited to, epoxy resin or vinyl ester resin.

[0040] A fishing rod 1 according to one embodiment of the present invention is configured to include any of the above-described joint members 4, a front rod body 11, and a rear rod body 12. In this way, according to a fishing rod equipped with a joint member according to one embodiment of the present invention, it is possible to provide a fishing rod equipped with a joint member that allows the base section and tip section to be flexibly selected by making both the base section and the tip section detachable and allowing the base section and tip section to be joined to each other in various sizes and shapes, thereby meeting the various and different needs of fishing rod users.

[0041] Next, referring to Figs. 9-12, the multiple fiber reinforced resin layers with different fiber directions of the joint member 4 according to one embodiment of the present invention will be described in more detail. First, as shown in Fig. 9, the multiple fiber reinforced resin layers in the joint member 4 according to one embodiment of the present invention are composed of an inner layer 21 and an outer layer 22 (the inner layer and the outer layer may be reversed). The inner layer 21 is a long fiber reinforced resin layer, and its long fibers are aligned so as to be oriented in a direction perpendicular to the axial direction of the joint member 4 (axial direction of the fishing rod 1) (90°), and the outer layer 22 is also a long fiber reinforced resin layer, and its long fibers are aligned so as to be oriented in a direction parallel to the axial direction of the joint member 4 (axial direction of the fishing rod 1) (0°). These layer structures make it possible to achieve both bending strength and crushing strength. The degree of elasticity can be adjusted by adjusting the number of layers and the elastic modulus. In addition, in the illustrated example, the central region of the joint member 4 is formed so as to bulge in a direction perpendicular to the axial direction of the joint member 4 (axial direction of the fishing rod 1). This is to reduce or adjust the difference in rigidity between the joints 13, 14.

[0042] Next, as shown in FIG. 10, the multiple fiber-reinforced resin layers in the joint member 4 according to one embodiment of the present invention are composed of an inner layer 23 and an outer layer 24 (the inner layer and the outer layer may be reversed). The inner layer 23 is a long fiber-reinforced resin layer, and the long fibers are aligned so as to be oriented in a direction parallel to the axial direction of the joint member 4 (axial direction of the fishing rod 1) (0°), and the outer layer 24 is also a long fiber-reinforced resin layer, and the long fibers are aligned so as to be oriented in a bias direction (i.e., ±45°) relative to the axial direction of the joint member 4 (axial direction of the fishing rod 1). These layer structures make it possible to achieve both bending strength and torsional strength. In addition, by increasing the proportion of bias in the end region in the axial direction of the joint member 4, the shear strain of the joint member 4 can be suppressed, and a good connection can be formed. The degree of elasticity can be adjusted by adjusting the number of layers and the elastic modulus. In the illustrated example, the central region of the joint member 4 is formed to bulge in a direction perpendicular to the axial direction of the joint member 4 (the axial direction of the fishing rod 1). This is to reduce or adjust the difference in rigidity between the joints 13 and 14.

[0043] Next, as shown in FIG. 11, the multiple fiber-reinforced resin layers in the joint member 4 according to one embodiment of the present invention are composed of an inner layer 25 and an outer layer 26 (the inner layer and the outer layer may be reversed). The inner layer 25 is a long fiber-reinforced resin layer, and the long fibers are aligned so as to be oriented in a direction perpendicular to the axial direction of the joint member 4 (axial direction of the fishing rod 1) (90°), and the outer layer 26 is also a long fiber-reinforced resin layer, and the long fibers are aligned so as to be oriented in a bias direction (i.e., ±45°) relative to the axial direction of the joint member 4 (axial direction of the fishing rod 1). These layer structures make it possible to achieve both crush strength and torsional strength. In addition, by increasing the proportion of bias in the end region in the axial direction of the joint member 4, the shear strain of the joint member 4 can be suppressed, and a good connection can be formed. The degree of elasticity can be adjusted by adjusting the number of layers and the elastic modulus. In the illustrated example, the central region of the joint member 4 is formed to bulge in a direction perpendicular to the axial direction of the joint member 4 (the axial direction of the fishing rod 1). This is to reduce or adjust the difference in rigidity between the joints 13 and 14.

[0044] Next, as shown in FIG. 12, the multiple fiber-reinforced resin layers in the joint member 4 according to one embodiment of the present invention are composed of an inner layer 27, an intermediate layer 28, and an outer layer 29 (the inner layer and the outer layer may be reversed). The inner layer 27 is a long fiber-reinforced resin layer, and the long fibers are aligned so as to be oriented in a direction perpendicular to the axial direction of the joint member 4 (axial direction of the fishing rod 1) (90°). The intermediate layer 28 is a long fiber-reinforced resin layer, and the long fibers are aligned so as to be oriented in a direction parallel to the axial direction of the joint member 4 (axial direction of the fishing rod 1) (0°). The outer layer 29 is a long fiber-reinforced resin layer, and the long fibers are aligned so as to be oriented in a bias direction (i.e., ±45°) relative to the axial direction of the joint member 4 (axial direction of the fishing rod 1). These layer structures make it possible to achieve both bending strength, crushing strength, and torsional strength. In addition, by increasing the proportion of bias in the end region in the axial direction of the joint member 4, the shear strain of the joint member 4 can be suppressed, and a good connection can be formed. The degree of elasticity can be adjusted by adjusting the number of layers and the elastic modulus. In the illustrated example, the central region of the joint member 4 is formed to bulge in a direction perpendicular to the axial direction of the joint member 4 (the axial direction of the fishing rod 1). This is to reduce or adjust the difference in rigidity between the joints 13 and 14.

[0045] Here, the joining member 4 according to one embodiment of the present invention has been described using a long fiber reinforced resin as an example. However, in other embodiments, the joining member 4 may be formed from a short fiber reinforced resin material, a rubber molded product, a resin molded product, aluminum, or ABS.

[0046] The dimensions, materials, and arrangement of each component described in this specification are not limited to those explicitly described in the embodiments, and each component can be modified to have any dimensions, materials, and arrangement that can be included in the scope of the present invention. In addition, components not explicitly described in this specification can be added to the described embodiments, and some of the components described in each embodiment can be omitted. [Explanation of symbols]

[0047] 1 fishing rod 2 Rod body 3. Main rod 4 Joint members 5 Middle rod 6 Reels 6a Reel leg 7 Tip Rod 9 Reel seat 10 Fishing Line Guide 11 Front rod body 12 Rear rod body 13 First joint 14 Second joint 15 Central part 16 Hollow part 17 First end 18 Second end 21 Inner layer 22 Outer layer 23 Inner layer 24 Outer layer 25 Inner layer 26 Outer layer 27 Inner layer 28 Middle Class 29 Outer layer

Claims

1. A joint member that allows the front rod body and the rear rod body of a fishing rod to be detachably attached and detached, The fishing line includes a first joint portion formed in a cylindrical shape to which the front rod body can be attached, a second joint portion formed in a cylindrical shape to which the rear rod body can be attached, and a central portion connecting these. The front rod body can be attached to the inner or outer surface of the first joint portion, and the rear rod body can be attached to the inner or outer surface of the second joint portion, A joint member characterized in that it is configured so that it can be attached to any of the following: the first joint portion of the front rod body to the inner surface and the second joint portion of the rear rod body to the inner surface; the first joint portion of the front rod body to the inner surface and the second joint portion of the rear rod body to the outer surface; the first joint portion of the front rod body to the outer surface and the second joint portion of the rear rod body to the inner surface; or the first joint portion of the front rod body to the outer surface and the second joint portion of the rear rod body to the outer surface.

2. The joint member according to claim 1 , wherein an inner diameter of the first joint portion is smaller than an inner diameter of the second joint portion.

3. The joint member according to claim 1 or 2, wherein an outer diameter of the first joint portion is smaller than an outer diameter of the second joint portion.

4. The joint member according to claim 1 , wherein an inner diameter of the inner surface of the first joint portion increases in a direction away from the central portion.

5. 5. The joint member according to claim 1, wherein the central portion has a hollow portion, and an inner diameter of the central portion increases from a first end portion on the first joint portion side to a second end portion on the second joint portion side.

6. 5. The joint member according to claim 1, wherein the central portion has a hollow portion, and the inner diameter of the central portion is constant from a first end portion on the first joint portion side to a second end portion on the second joint portion side.

7. The joint member according to claim 1 , wherein the central portion has an outer diameter larger than an outer diameter of the first joint portion and equal to or smaller than an outer diameter of the second joint portion.

8. The joint according to claim 1 , wherein the joint is made of a fiber-reinforced resin material and is formed of a plurality of fiber-reinforced resin layers having different fiber directions in a radial direction.

9. A fishing rod comprising the joint member according to any one of claims 1 to 8, the front rod body, and the rear rod body.

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