Second section of fishing rod and fishing rod having the same

Abstract

The present application provides a second section of a fishing rod and a fishing rod having the same, the second section of the fishing rod being used for configuring a first section of the fishing rod suitable for a fishing type. The second section of the fishing rod of the present application is a second section (3) for connecting a first section of a fishing rod, and has a support portion (10) having a first inclined portion (12) which is enlarged in diameter toward a butt direction and is provided on an outer peripheral surface, and a second inclined portion (20) which is reduced in diameter toward the butt direction and is provided on an inner peripheral surface. The support portion (10) has a first layer (31) which is provided with the first inclined portion (12) on the outer peripheral surface, a second layer (32) which is provided on a radially inner side of the first layer (31), and a third layer (33) which is provided with the second inclined portion (20) on the inner peripheral surface.

Description

Technical Field

[0001] The present invention relates to a second section of a fishing rod and a fishing rod having the same, the second section of which is used to connect to the first section of the fishing rod. Background Technology

[0002] Patent Document 1 describes a fishing rod with a solid first section. Compared to a hollow first section, a solid first section of the fishing rod is more flexible and allows for greater bending of the tip. Therefore, it is suitable for fine-tuned fishing, but conversely, it is not suitable for fishing where the tip requires a certain degree of rebound.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent document 1: Japanese Patent No. 5701734. Summary of the Invention

[0006] The problem that the invention aims to solve

[0007] The objective of this invention is to provide a second section of a fishing rod and a fishing rod having the same, wherein the second section of the fishing rod can be connected to a first section of a fishing rod suitable for a particular type of fishing.

[0008] Technical means to solve the problem

[0009] The second section of the fishing rod of the present invention is for connecting to the first section of the fishing rod and has a support portion having: a first inclined portion that expands in diameter toward the rod root and is disposed on the outer peripheral surface; and a second inclined portion that narrows in diameter toward the rod root and is disposed on the inner peripheral surface.

[0010] According to this structure, the first section of the fishing rod can be connected to the support section. For example, a hollow first section can be connected to the first inclined section of the support section. The hollow first section is also called a tubular tip section. By connecting this tubular tip section, the tip section generates tension, and the fishing rod becomes a rod action suitable for fishing that requires greater tip rebound, such as light jigging. On the other hand, for example, a solid first section can be connected to the second inclined section of the support section. The solid first section is also called a solid tip section. By connecting this solid tip section, the tip section can gain flexibility, and the fishing rod becomes a rod tip action suitable for fishing that requires finesse in the tip section, such as sea bream fishing (Tai Rubber), metal sutte fishing, and tip run eging. The first section corresponding to the fishing type can be connected in this way.

[0011] Preferably, the support portion has: a first layer having a first inclined portion on its outer peripheral surface; and a second layer disposed radially inside the first layer. According to this structure, since the first inclined portion is disposed in a different layer than the second layer, i.e., the first layer, the first inclined portion can be easily formed on the outer peripheral surface of the support portion. Furthermore, the second layer can easily ensure the bending rigidity of the second section of the fishing rod.

[0012] Preferably, the first layer has a lower axial bending stiffness than the second layer. According to this structure, the bending stiffness of the second section of the fishing rod can be easily ensured by the second layer. Furthermore, when the first section connected to the second section of the fishing rod bends, cracking of the support portion can be easily prevented by the first layer.

[0013] Preferably, the first layer has a first reinforcing fiber along the circumferential direction. According to this structure, when the first section connected to the second section of the fishing rod is bent, cracking of the support portion can be easily prevented.

[0014] Preferably, the second layer has a second reinforcing fiber along the axial direction. According to this structure, the bending rigidity of the second section of the fishing rod can be easily ensured through the second layer.

[0015] Preferably, at least one of the first reinforcing fiber and the second reinforcing fiber is a long carbon fiber. According to this structure, the second section of the fishing rod can be easily made lighter.

[0016] Preferably, the support portion further comprises a third layer, which has a second inclined portion on its inner circumferential surface. According to this structure, the second inclined portion can be easily formed through the third layer.

[0017] Preferably, the end of the first layer in the rod root direction is located further in the rod root direction than the end of the third layer. According to this structure, when the first section connected to the second section of the fishing rod bends, the stress generated in the support portion can be dispersed axially. That is, stress concentration in the support portion can be prevented, thereby preventing damage to the second section of the fishing rod. In particular, stress concentration when the first section of the fishing rod is connected to the second inclined portion can be effectively prevented.

[0018] Preferably, the third layer has a third reinforcing fiber. This structure ensures the strength of the inner circumferential surface of the support and facilitates the formation of the second inclined portion.

[0019] Preferably, the third reinforcing fiber has a first glass fiber along one direction. According to this structure, when the first section of the fishing rod is connected to the second inclined section, a smooth bending curve from the first section to the second section can be obtained.

[0020] Preferably, the third reinforcing fiber has a second glass fiber in a direction that intersects with the direction of the first glass fiber. According to this structure, a smoother bending curve from the first section to the second section can be obtained.

[0021] Preferably, the first inclined portion has a first top portion with the largest diameter, and the second inclined portion has a second top portion with the smallest diameter, with the first and second top portions being axially offset from each other. According to this structure, when the first section connected to the support portion bends, the stress generated in the support portion can be dispersed axially, preventing damage to the support portion.

[0022] Preferably, the first tip is located further towards the root of the rod than the second tip. This structure effectively prevents stress concentration in the support portion and further prevents damage to the support portion.

[0023] Preferably, the support portion has: a tapered portion that gradually narrows from the first tip towards the root of the rod and is disposed on the outer circumferential surface; and an expanded portion that gradually expands from the second tip towards the root of the rod and is disposed on the inner circumferential surface; the tapering ratio of the tapered portion is greater than the expansion ratio of the expanded portion. According to this structure, a smooth bending curve from the first section to the second section can be obtained.

[0024] Furthermore, the fishing rod of the present invention has the aforementioned second section and a first section connected to the first inclined portion.

[0025] Furthermore, the fishing rod of the present invention includes the aforementioned second section and a second first section connected to the second inclined portion.

[0026] Furthermore, the fishing rod of the present invention includes: the aforementioned second section; a first section connected to the first inclined portion; and a second section that can be interchanged with the first section and is connected to the second inclined portion.

[0027] Preferably, the second and first sections are solid rods.

[0028] Invention Effects

[0029] As described above, the second section of the fishing rod of the present invention and the fishing rod having therein can be replaced with the first section depending on the type of fishing. Attached Figure Description

[0030] Figure 1 This is a front view showing the detached state of a fishing rod according to an embodiment of the present invention;

[0031] Figure 2 This is a front view showing a partially separated state of a fishing rod according to an embodiment of the present invention;

[0032] Figure 3 is a front view showing the main part of a fishing rod according to an embodiment of the present invention. Figure 3(a) is a diagram showing the state with the first section connected, and Figure 3(b) is a diagram showing the state with the second section connected.

[0033] Figure 4 is a front view showing the main part of a fishing rod according to an embodiment of the present invention. Figure 4(a) is a diagram showing the state after the first section is separated, and Figure 4(b) is a diagram showing the state with the first section connected.

[0034] Figure 5 is a front view showing the main part of a fishing rod according to an embodiment of the present invention. Figure 5(a) is a diagram showing the state after the second and first sections are separated, and Figure 5(b) is a diagram showing the state with the second and first sections connected.

[0035] Figure 6 is a cross-sectional view showing the main parts of a fishing rod according to an embodiment of the present invention. Figure 6(a) shows the state with the first section connected, and Figure 6(b) shows the state with the second section connected.

[0036] Figure 7 This is a partial cross-sectional view of the support portion of the second section of a fishing rod according to an embodiment of the present invention;

[0037] Figure 8 This is a partial cross-sectional view of the support portion of the second section of a fishing rod according to an embodiment of the present invention;

[0038] Figure 9 This is a schematic diagram illustrating the manufacturing steps of the second section of a fishing rod according to an embodiment of the present invention;

[0039] Figure 10 This is a schematic diagram illustrating the manufacturing steps of the second section of a fishing rod according to an embodiment of the present invention. Detailed Implementation

[0040] The following is for reference Figures 1-10 The fishing rod according to one embodiment of the present invention will be described. Figure 1 and Figure 2 The overall structure of the fishing rod according to this embodiment is shown. Figure 1 As shown, the fishing rod of this embodiment has a three-section structure, but the number of sections is arbitrary. Furthermore, the fishing rod has multiple line guides 5 on the outer circumference of the rod body. It should be noted that the fishing rod of this embodiment is suitable for double-bearing reels, but it can also be used with spinning reels. It should be noted that... Figure 1 Arrow A indicates the direction of the rod tip, and arrow B indicates the direction of the rod base.

[0041] The fishing rod comprises a first section 1, a second section 2, a second section 3, and a handle section 4. It should be noted that one or more intermediate rod sections may be provided between the handle section 4 and the second section 3. The second section 3 and the handle section 4 can be integral. The handle section 4 is provided with a reel holder 6. The handle section 4 and the second section 3 are hollow. It should be noted that in this embodiment, the handle section 4 does not have a fishing line guide 5, but the handle section 4 may also have a fishing line guide 5. Multiple fishing line guides 5 are provided in the first section 1, the second section 2, and the second section 3 respectively.

[0042] like Figure 2 As shown, section 2, 3 is detachably connected to the tip 4a of handle section 4. Furthermore, section 1 and section 2 are selectively and detachably connected to the tip 3a of section 2, 3. That is, section 1 or section 2 can be connected to the tip 3a of section 2, 3. It is possible to use section 2, 3, by connecting either section 1 or section 2 to the tip 3a of section 2.

[0043] Section 2, 3 has a support portion 10 at the tip 3a. Section 1 and Section 2 are selectively connected to the support portion 10. The fishing line guide 5 of Section 2, 3 is separated from the support portion 10 towards the rod root. Figures 3(a), 4, and 6(a) show the state where Section 1 is connected to the support portion 10. Figures 3(b), 5, and 6(b) show the state where Section 2 is connected to the support portion 10. In this way, Section 1 is connected to the outer peripheral surface of the support portion 10, and Section 2 is connected to the inner peripheral surface of the support portion 10. That is, Section 1 is connected to Section 2, 3 in a reverse insertion manner, and Section 2 is connected to Section 1 in a insertion manner. It should be noted that the connection length J1 between Section 1 and Section 2, and the connection length J2 between Section 2 and Section 3 are approximately equal, but may also be different.

[0044] Section 1 is preferably a hollow rod (hollow rod) referred to as a tubular tip section, but it can also be a solid rod (solid rod) referred to as a solid tip section. In this embodiment, Section 1 is hollow. Section 2 is preferably solid, but it can also be hollow. In this embodiment, Section 2 is solid. Section 2 is preferably more flexible and easier to bend than Section 1. The axial lengths of Section 1 and Section 2 can be approximately the same or different. The total length of the fishing rod when Section 1 is connected to Section 2 and the total length of the fishing rod when Section 2 is connected to Section 2 can be approximately the same or different.

[0045] The number of line guides 5 in the first section 1 is equal to the number of line guides 5 in the second section 2, but they can also be different; preferably, they are equal. Furthermore, the line guides 5 in the first section 1 and the line guides 5 in the second section 2 can be identical and of the same specifications, or they can be different. In this embodiment, the first section 1 is provided with line guides 5 suitable for tubular tip sections, and the second section 2 is provided with line guides 5 suitable for solid tip sections. For example, the line guides 5 in the first section 1 can be designed to be more inclined towards the rod tip than the line guides 5 in the second section 2.

[0046] Figure 7 The diagram shows a cross-sectional view of the support portion 10. The support portion 10 has the following on its outer peripheral surface: a first inclined portion 12 that gradually widens in diameter from the tip opening 11 toward the root; a first tip portion 13 that is continuous along the root direction of the first inclined portion 12 and has the largest diameter on the outer peripheral surface of the support portion 10; and a tapering portion 14 that is continuous along the root direction of the first tip portion 13 and gradually narrows in diameter toward the root. Because the first inclined portion 12 is provided on the outer peripheral surface of the support portion 10, the first section 1 can be smoothly and reliably connected to the radially outer side of the support portion 10.

[0047] The diameter D2 of the first tip portion 13 is the largest in the support portion 10. In this embodiment, the first tip portion 13 has a predetermined length L2 in the axial direction. However, the first tip portion 13 may also have no axial length. The reduction ratio (slope θ3) of the reduced diameter portion 14 is greater than the expansion ratio (slope θ1) of the first inclined portion 12. The slope θ3 of the reduced diameter portion 14 is greater than the slope θ1 of the first inclined portion 12. The diameter D3 of the rod root end (end in the rod root direction) of the reduced diameter portion 14 is smaller than the outer diameter D1 of the rod tip opening end 11. The axial length L3 of the reduced diameter portion 14 is shorter than the axial length L1 of the first inclined portion 12. The main outer peripheral surface 15 of section 2 3 is continuous along the rod root direction of the reduced diameter portion 14. The main outer peripheral surface 15 gradually expands in diameter towards the rod root direction. The slope θ4 of the main outer peripheral surface 15 is less than the slope θ1 of the first inclined portion 12. The slope θ4 of the main outer circumferential surface 15 is the basic slope of the outer circumferential surface in Section 2.3.

[0048] The support portion 10 has the following on its inner circumferential surface: a second inclined portion 20, which gradually narrows from the tip opening end 11 toward the root; and an expanding portion 21, which is continuous along the root direction of the second inclined portion 20 and gradually expands toward the root. The axial length L4 of the second inclined portion 20 is shorter than the axial length L1 of the first inclined portion 12. The reduction ratio (slope θ2) of the second inclined portion 20 may be the same as or different from the slope θ1 of the first inclined portion 12; in this embodiment, they are the same. The slope θ2 of the second inclined portion 20 is less than the slope θ3 of the narrowed portion 14. Because the second inclined portion 20 is provided on the inner circumferential surface of the support portion 10, the second section 2 can be smoothly and reliably connected to the radially inner side of the support portion 10.

[0049] The root end of the second inclined portion 20 becomes the second tip portion 22 with the smallest diameter in the support portion 10. The second tip portion 22 does not have an axial length, but it may have a predetermined length along the axial direction. The second tip portion 22 is offset from the first tip portion 13 in the axial direction, and is preferably located further towards the tip of the rod than the first tip portion 13.

[0050] The enlarged diameter section 21 is the main inner circumferential surface of section 2 3. The enlarged diameter section 21 extends further towards the rod root than the reduced diameter section 14. The slope θ5 of the enlarged diameter section 21 is the basic slope of the inner circumferential surface of section 2 3, and is less than the slope θ2 of the second inclined section 20. In addition, the slope θ5 of the enlarged diameter section 21 is less than the slope θ3 of the reduced diameter section 14.

[0051] The support section 10 is preferably composed of multiple layers. Figure 8 An example of the layered structure of the support portion 10 is shown. The support portion 10 has a first layer 31, a second layer 32 located radially inside the first layer 31, and a third layer 33 located radially inside the second layer 32. The first layer 31 is the outermost layer of the support portion 10, and the outer peripheral surface of the support portion 10 is disposed on the first layer 31. The third layer 33 is the innermost layer of the support portion 10, and the inner peripheral surface of the support portion 10 is disposed on the third layer 33. The first layer 31 and the third layer 33 are disposed only at the tip of the rod along the entire length of the second section 3. That is, the second layer 32 is disposed only in the support portion 10 and extends along the entire length of the second section 3. It should be noted that the second layer 32 can be a single layer or multiple layers. In this embodiment, the second layer 32 is a single layer. The second layer 32 is located radially between the first layer 31 and the third layer 33. The first layer 31 is disposed on the outer peripheral surface of the second layer 32, and the third layer 33 is disposed on the inner peripheral surface of the second layer 32.

[0052] Layer 1 (31), Layer 2 (32), and Layer 3 (33) extend from the tip opening 11 toward the root. The axial length LL1 of Layer 1 (31) is longer than the axial length LL3 of Layer 3 (33). The root end 31a of Layer 1 (31) is located further toward the root than the second tip 22, and further toward the root than the root end 33a of Layer 3 (33). The root end 33a of Layer 3 (33) is located further toward the root than the second tip 22. The root end 33a of Layer 3 (33) is located further toward the root than the first tip 13.

[0053] The thickness of each of the first layer 31, the second layer 32, and the third layer 33 at the open end 11 of the rod tip is arbitrary, but preferably the thickness of the third layer 33 at the open end 11 of the rod tip is thinner than the thickness of the second layer 32 at the open end 11 of the rod tip, and thinner than the thickness of the first layer 31 at the open end 11 of the rod tip. Furthermore, it is preferable that the thickness of the second layer 32 at the open end 11 of the rod tip is thicker than the thickness of the first layer 31 at the open end 11 of the rod tip.

[0054] The first inclined portion 12 and the second inclined portion 20 are preferably formed by cutting. The first inclined portion 12, the first top end portion 13, and the diameter-reduced portion 14 are provided in the first layer 31. The second inclined portion 20, the second top end portion 22, and a portion of the diameter-expanded portion 21 are provided in the third layer 33. The main outer peripheral surface 15 and most of the diameter-expanded portion 21 are provided in the second layer 32.

[0055] The first layer 31 comprises: a first cylindrical portion 41, the thickness of which gradually increases from the tip opening 11 toward the root; a second cylindrical portion 42, which is continuous along the root direction of the first cylindrical portion 41 and has a roughly fixed thickness; and a third cylindrical portion 43, which is continuous along the root direction of the second cylindrical portion 42 and gradually decreases in thickness toward the root. The outer peripheral surface of the first cylindrical portion 41 is a first inclined portion 12, the outer peripheral surface of the second cylindrical portion 42 is a first tip portion 13, and the outer peripheral surface of the third cylindrical portion 43 is a reduced diameter portion 14. The wall thickness of the first layer 31 is greatest at the second cylindrical portion 42. The root end 31a of the first layer 31 is the root end of the reduced diameter portion 14, and the wall thickness of the first layer 31 is 0 at the root end 31a. It should be noted that the wall thickness of the support portion 10 is greatest at the first tip portion 13.

[0056] The second layer 32 includes: a fourth cylindrical portion 44 extending from the tip opening 11 toward the root of the rod, with a substantially fixed wall thickness; a fifth cylindrical portion 45 continuous along the root direction of the fourth cylindrical portion 44, gradually increasing in thickness toward the root; and a sixth cylindrical portion 46 continuous along the root direction of the fifth cylindrical portion 45, with a substantially fixed or gradually increasing wall thickness toward the root. The third layer 33 is located on the inner circumferential surfaces of the fourth cylindrical portion 44 and the fifth cylindrical portion 45. The third layer 33 is not present on the inner circumferential surface of the sixth cylindrical portion 46. The axial length LL2 of the fourth cylindrical portion 44 is shorter than the axial length LL1 of the first layer 31 and shorter than the axial length LL3 of the third layer 33. The first tip portion 13 extends further toward the root than the root end 44a of the fourth cylindrical portion 44 (the tip end of the fifth cylindrical portion 45). The fifth cylindrical portion 45 increases in thickness toward the root primarily through a narrowing of its inner circumferential surface. The sixth tube 46 extends to the root end 3b of the second section 3.

[0057] The third layer 33 includes: a seventh cylindrical portion 47, which gradually thickens from the tip opening 11 toward the root; an eighth cylindrical portion 48, which is continuous along the root direction of the seventh cylindrical portion 47 and has a substantially fixed wall thickness; and a ninth cylindrical portion 49, which is continuous along the root direction of the eighth cylindrical portion 48 and gradually thins toward the root. The inner circumferential surface of the seventh cylindrical portion 47 is a second inclined portion 20. The inner circumferential surfaces of the eighth cylindrical portion 48 and the ninth cylindrical portion 49, together with the inner circumferential surface of the sixth cylindrical portion 46 of the second layer 32, form an enlarged diameter portion 21. The root end 33a of the third layer 33 is located further toward the tip than the root end 31a of the first layer 31.

[0058] Section 2.3 is manufactured by winding a prepreg with various reinforcing fibers onto a mandrel 50 and heating and firing it. Figure 9 The diagram illustrates an example of the prepreg used in the manufacture of Section 2.3 of this embodiment. A third prepreg 53 for forming the third layer 33, a second prepreg 52 for forming the second layer 32, and a first prepreg 51 for forming the first layer 31 are sequentially wound onto a mandrel 50. The length, number of windings, and number of sheets of each prepreg can be set in various ways.

[0059] The first prepreg 51 has a first reinforcing fiber 61, the second prepreg 52 has a second reinforcing fiber 62, and the third prepreg 53 has a third reinforcing fiber 63. All of these reinforcing fibers are long fibers. The axial bending stiffness of the third reinforcing fiber 63 is preferably less than that of the second reinforcing fiber 62, and the axial bending stiffness of the first reinforcing fiber 61 is preferably less than that of the second reinforcing fiber 62.

[0060] The first reinforcing fiber 61 is preferably a so-called reverse-textured fiber along the circumferential direction. The first reinforcing fiber 61 is preferably carbon fiber. It should be noted that the first reinforcing fiber 61 can be a fiber along the axial direction or a fiber along a direction inclined at a predetermined angle relative to the axial direction, etc., and it is also preferable to use a fiber with lower elasticity compared to the second reinforcing fiber 62.

[0061] The second reinforcing fiber 62 is used to ensure the bending stiffness of section 2 3 and is the main reinforcing fiber of section 2 3. The second reinforcing fiber 62 is preferably a so-called positive weave fiber along the axial direction. The second reinforcing fiber 62 is preferably carbon fiber.

[0062] The third reinforcing fiber 63 is preferably glass fiber, and more preferably, it is a cross-fiber where the fibers intersect each other. That is, the third reinforcing fiber 63 preferably has a first glass fiber 63a along one direction and a second glass fiber 63b that intersects the first glass fiber 63a. The first glass fiber 63a and the second glass fiber 63b can be aligned in the following directions, for example, a 0-degree (parallel) direction along the axial direction, the so-called forward weave direction, and a 90-degree (perpendicular) direction along the axial direction, the so-called reverse weave direction. Alternatively, they can be aligned in a direction inclined at a predetermined angle, in which case the first glass fiber 63a and the second glass fiber 63b intersect each other at their respective inclination angles relative to the axial direction, for example, ±45 degrees.

[0063] Figure 10 The image shows the state of Section 2.3 immediately after heating and baking. Subsequently, the support portion 10 of Section 2.3 is machined to form the first inclined portion 12 and the second inclined portion 20. Figure 8 The double-dotted lines shown represent the outer and inner circumferential surfaces of the support portion 10 before machining. In this way, the first inclined portion 12 is formed by machining the first layer 31, and the second inclined portion 20 is formed by machining the third layer 33. On the other hand, the reduced diameter portion 14 is formed from the first prepreg 51, and the expanded diameter portion 21 is formed from the outer circumferential surface of the mandrel 50.

[0064] As described above, since the first inclined portion 12 is formed on the outer peripheral surface of the support portion 10, the first section 1 can be connected to the first inclined portion 12 in a reverse insertion state. If the first section 1 is a tubular tip section, the tip section generates tension, and the fishing rod is rod-action. Therefore, it becomes a fishing rod suitable for fishing where the tip section requires greater rebound force, such as light fishing. On the other hand, since the second inclined portion 20 is formed on the inner peripheral surface of the support portion 10, the second section 2 can be connected to the second inclined portion 20 in a insertion state. If the second section 2 is a solid tip section, the tip section can gain flexibility, and the fishing rod is rod-tip action. Therefore, it becomes a fishing rod suitable for fishing where the tip section requires precision, such as sea bream fishing, wood-crusted shrimp fishing, and lure fishing.

[0065] Depending on the type of fishing, the angler's preferences, and the situation, either section 1 (1) or section 2 (2) can be selected and connected to section 2 (3). For example, when boat fishing, by carrying both sections 1 (1) and 2 (2), even with only one rod, one can handle relatively aggressive fishing such as light fishing, as well as relatively slow and delicate fishing such as sea bream fishing. For example, even if the target fish or fishing method differs between the first and second halves of the fishing session, one rod can be used by appropriately switching sections 1 (1) and 2 (2). Since one rod can be used, one reel is sufficient and there is no need to change the reel. However, a spare reel can also be used. Furthermore, if other sections with different actions (not shown) are prepared, the applicability of the fishing will be even wider.

[0066] Even if you swap the first section, the second section (section 3) remains unchanged, so the feel of power in the rod's waist (shaft) is consistent. Therefore, the rod's ability to withstand the pull of a fish is maintained without significant alteration. Furthermore, even if you swap the first section, the handle section (section 4) remains unchanged, so the feel and grip around the handle section (section 4) are also consistent. You can use a favorite and familiar fishing rod for various fishing activities.

[0067] Furthermore, since the first inclined portion 12 is formed in the first layer 31, it is easy to form the first inclined portion 12 on the outer peripheral surface of the support portion 10 without affecting the second layer 32. Therefore, the bending rigidity of the second section 3 can be easily ensured by utilizing the second layer 32. Similarly, since the second inclined portion 20 is formed in the third layer 33, it is easy to form the second inclined portion 20 on the inner peripheral surface of the support portion 10 without affecting the second layer 32. Therefore, the bending rigidity of the second section 3 can be easily ensured by utilizing the second layer 32.

[0068] If the axial bending stiffness of the first layer 31 is smaller than that of the second layer 32, the bending stiffness of the second section 3 can be easily ensured by the second layer 32, and the first section 1 or the second section 2 connected to the second section 3 can be easily prevented from cracking by the first layer 31. In particular, if the first layer 31 has a first reinforcing fiber 61 along the circumferential direction, cracking of the support 10 can be easily prevented. If the first reinforcing fiber 61 is carbon fiber, the support 10 can be made lighter.

[0069] If the second layer 32 has a second reinforcing fiber 62 along the axial direction, the bending stiffness of the first section can be easily ensured by the second layer 32. If the second reinforcing fiber 62 is carbon fiber, the second section 3 can be easily made lightweight.

[0070] If the third layer 33 has a third reinforcing fiber 63, the strength of the inner circumferential surface of the support portion 10 can be ensured, and the second inclined portion 20 can be easily formed. If the third reinforcing fiber 63 has a first glass fiber 63a and a second glass fiber 63b that intersect each other, a smooth curved curve from the second first section 2 to the second inclined portion 20 can be obtained when the second first section 2 is connected to the second inclined portion 20. If the slope θ3 of the reduced diameter portion 14 is greater than the slope θ5 of the expanded diameter portion 21, a smooth curved curve from the first first section 1 or the second first section 2 to the second section 3 can be obtained.

[0071] If the root end 31a of the first layer 31 is located further in the root direction than the root end 33a of the third layer 33, then when the first section 1 or the second section 2 bends, the stress generated in the support portion 10 can be dispersed axially. That is, stress concentration in the support portion 10 can be prevented, thereby preventing damage to the second section 3. In particular, when the second section 2 is connected to the second inclined portion 20, stress concentration in the support portion 10 can be effectively prevented, thereby effectively preventing damage to the second section 3.

[0072] If the first tip portion 13 and the second tip portion 22 are axially misaligned, the stress generated in the support portion 10 can be dispersed axially when the first section 1 or the second section 2 bends, thereby preventing damage to the support portion 10. In particular, damage to the support portion 10 when the second section 2 is connected to the second inclined portion 20 can be effectively prevented. Furthermore, if the first tip portion 13 is located further towards the rod root than the second tip portion 22, stress concentration in the support portion 10 can be further prevented, thereby further preventing damage to the support portion 10.

[0073] Symbol explanation:

[0074] 1 Section 1

[0075] 2 Section 2, Part 1

[0076] 3 Section 2

[0077] 3a Rod tip end

[0078] 3b Rod root end

[0079] 4 Hand-held joints

[0080] 4a Rod tip end

[0081] 5. Fishing line guide

[0082] 6. Cable reel holder

[0083] 10 Support Department

[0084] 11. Open end of rod tip

[0085] 12 First inclined section

[0086] 13 First apex

[0087] 14. Reduction section

[0088] 15 Main outer perimeter

[0089] 20 Second inclined section

[0090] 21. Expanded Diameter Section

[0091] 22 Second apex

[0092] 31. First Floor

[0093] 31a Rod root end

[0094] 32. Second Floor

[0095] 33 Third Floor

[0096] 33a Rod root end

[0097] 41 First tube section

[0098] 42 Second cylinder section

[0099] 43 Third cylinder

[0100] 44 Fourth cylinder section

[0101] 44a Rod root end

[0102] 45. Fifth cylinder section

[0103] 46. ​​Sixth cylinder section

[0104] 47. 7th cylinder section

[0105] 48. Eighth cylinder section

[0106] 49. Ninth cylinder section

[0107] 50 mandrels

[0108] 51 First Prepreg

[0109] 52. Second Prepreg

[0110] 53 Third Prepreg

[0111] 61 First Reinforcing Fiber

[0112] 62 Second Reinforcing Fiber

[0113] 63 Third Reinforcing Fiber

[0114] 63a First glass fiber

[0115] 63b Second glass fiber.

Claims

1. A second section of a fishing rod, for connecting to a first section of the fishing rod, and comprising: The support portion includes: a first inclined portion that expands in diameter toward the root of the rod and is disposed on its outer peripheral surface; and a second inclined portion that narrows in diameter toward the root of the rod and is disposed on its inner peripheral surface. The support portion has: a first layer having the first inclined portion on its outer peripheral surface; and a second layer disposed radially inside the first layer.

2. The second section of the fishing rod according to claim 1, wherein, The first layer has a smaller axial bending stiffness than the second layer.

3. The second section of the fishing rod according to claim 2, wherein, The first layer has a first reinforcing fiber along the circumferential direction.

4. The second section of the fishing rod according to claim 3, wherein, The second layer has a second reinforcing fiber along the axial direction.

5. The second section of the fishing rod according to claim 4, wherein, At least one of the first reinforcing fiber and the second reinforcing fiber is a long carbon fiber.

6. The second section of the fishing rod according to any one of claims 1 to 5, wherein, The support portion also has a third layer, which has the second inclined portion on its inner circumferential surface.

7. The second section of the fishing rod according to claim 6, wherein, The end of the first layer in the direction of the rod root is located further in the direction of the rod root than the end of the third layer in the direction of the rod root.

8. The second section of the fishing rod according to claim 6, wherein, The third layer has a third reinforcing fiber.

9. The second section of the fishing rod according to claim 8, wherein, The third reinforcing fiber has a first glass fiber in a unidirectional direction.

10. The second section of the fishing rod according to claim 9, wherein, The third reinforcing fiber has a second glass fiber in a direction that intersects with the direction of the first glass fiber.

11. The second section of the fishing rod according to any one of claims 1 to 5, wherein, The first inclined portion has a first apex portion with the largest diameter. The second inclined portion has a second top portion with the smallest diameter. The first and second top ends are axially offset from each other.

12. The second section of the fishing rod according to claim 11, wherein, The first tip is located closer to the base of the rod than the second tip.

13. The second section of the fishing rod according to claim 11, wherein, The support portion has: a tapered portion that gradually narrows from the first top end toward the root of the rod and is disposed on the outer circumferential surface; and an expanded portion that gradually expands from the second top end toward the root of the rod and is disposed on the inner circumferential surface. The diameter reduction ratio of the reduced diameter section is greater than the diameter expansion ratio of the expanded diameter section.

14. A fishing rod comprising: The second section of the fishing rod according to any one of claims 1 to 13; and Section 1, which is connected to the first inclined portion.

15. A fishing rod comprising: The second section of the fishing rod according to any one of claims 1 to 13; and Section 2, which is connected to the second inclined portion.

16. A fishing rod comprising: The second section of the fishing rod according to any one of claims 1 to 13; Section 1, which is connected to the first inclined portion; and The second section 1 is interchangeable with the first section 1 and is connected to the second inclined portion.

17. The fishing rod according to claim 15 or 16, wherein, The first and second sections are solid rods.

Images