Fishing rod with a fishing tip and a fishing rod equipped with the same
Patent Information
- Application Number
- JP2021136231
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2021-08-24
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2041-08-24
AI Technical Summary
Existing fishing rods with solid tips lack versatility, being either too soft for delicate fishing or lacking the repulsive force required for certain fishing techniques.
A fishing rod design that allows interchangeable connection of hollow and solid tip rods through tapered portions on the outer and inner surfaces, enabling flexibility and repulsive force adjustment based on fishing needs.
The design provides a single fishing rod suitable for various fishing techniques by switching between hollow and solid tip rods, enhancing versatility and durability while maintaining consistent rod feel.
Smart Images

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Abstract
Description
[Technical Field]
[0001] The present invention relates to a rod handle to which a tip rod is connected, and a fishing rod equipped with the rod handle. [Background technology]
[0002] Patent Document 1 below describes a fishing rod with a solid tip. A solid tip is softer and has the property of bending more flexibly than a hollow tip. This makes it suitable for delicate fishing, but conversely, it is not suitable for fishing where a resilient force is required in the tip. [Prior art documents] [Patent documents]
[0003] [Patent Document 1] Patent No. 5701734 Summary of the Invention [Problem to be solved by the invention]
[0004] An object of the present invention is to provide a rod head holder to which a rod head suitable for a type of fishing can be connected, and a fishing rod equipped with the same. [Means for solving the problem]
[0005] The fishing rod of the present invention is a fishing rod to which a fishing tip rod is connected, and is equipped with a fishing rod holding part that has a first tapered portion that expands in diameter toward the butt end and is provided on the outer surface, and a second tapered portion that contracts in diameter toward the butt end and is provided on the inner surface.
[0006] According to this configuration, a tip rod can be connected to the handle. For example, a hollow tip rod can be connected to the first tapered portion of the handle. A hollow tip rod is also called a tubular tip. By connecting this tubular tip, tension is generated in the tip, making the fishing rod a mid-action rod, making the fishing rod suitable for fishing that requires a large repulsive force in the tip, such as light jigging. On the other hand, for example, a solid tip rod can be connected to the second tapered portion of the handle. A solid tip rod is also called a solid tip. By connecting this solid tip, flexibility is imparted to the tip, making the fishing rod a tip-action rod, making the fishing rod suitable for fishing that requires a delicate tip, such as tairaba (sea bream rubber fishing), metal squid jigs, and tip run egging. In this way, tips suitable for various types of fishing can be connected.
[0007] Preferably, the rod holder has a first layer with a first tapered portion on its outer periphery and a second layer located radially inward of the first layer. With this configuration, the first tapered portion is located in the first layer, which is a separate layer from the second layer, making it easy to form the first tapered portion on the outer periphery of the rod holder. Furthermore, the second layer makes it easy to ensure the bending rigidity of the rod holder.
[0008] Preferably, the first layer has a lower bending rigidity in the axial direction than the second layer. With this configuration, the second layer can easily ensure the bending rigidity of the fishing rod. Furthermore, the first layer can easily prevent the fishing rod from cracking when the tip rod connected to the fishing rod bends.
[0009] Preferably, the first layer has first reinforcing fibers arranged along the circumferential direction. With this configuration, cracking of the holding portion can be easily prevented when the tip rod connected to the holding rod is bent.
[0010] Preferably, the second layer has second reinforcing fibers arranged along the axial direction. With this configuration, the second layer can easily ensure the bending rigidity of the pole.
[0011] Preferably, at least one of the first reinforcing fibers and the second reinforcing fibers is a continuous carbon fiber. With this configuration, the weight of the pole can be easily reduced.
[0012] Preferably, the holder further has a third layer having a second tapered portion on its inner circumferential surface. With this configuration, the second tapered portion can be easily formed by the third layer.
[0013] Preferably, the butt-side end of the first layer is located further toward the butt than the butt-side end of the third layer. With this configuration, when the tip rod connected to the holding rod is bent, the stress generated in the holding portion can be dispersed in the axial direction. In other words, stress concentration in the holding portion can be prevented, and damage to the holding rod can be prevented. In particular, stress concentration when the tip rod is connected to the second tapered portion can be effectively prevented.
[0014] Preferably, the third layer includes third reinforcing fibers. With this configuration, the strength of the inner circumferential surface of the holder can be ensured, and the second tapered portion can be easily formed.
[0015] Preferably, the third reinforcing fibers have the first glass fibers aligned in one direction. With this configuration, when the tip rod is connected to the second tapered portion, a smooth bending curve can be obtained from the tip rod to the handle rod.
[0016] Preferably, the third reinforcing fibers have second glass fibers aligned in a direction intersecting the direction of the first glass fibers. With this configuration, an even smoother bending curve can be obtained from the tip rod to the holding rod.
[0017] Preferably, the first tapered portion has a first peak portion with a maximum diameter, and the second tapered portion has a second peak portion with a minimum diameter, and the first peak portion and the second peak portion are misaligned with each other in the axial direction. With this configuration, when the tip rod connected to the holder bends, the stress generated in the holder can be dispersed in the axial direction, preventing damage to the holder.
[0018] Preferably, the first peak portion is located closer to the butt of the rod than the second peak portion. With this configuration, stress concentration in the handle can be efficiently prevented, and breakage of the handle can be further prevented.
[0019] Preferably, the handle has a reduced diameter section that gradually reduces in diameter from the first peak section toward the butt end and is provided on the outer circumferential surface, and an expanded diameter section that gradually increases in diameter from the second peak section toward the butt end and is provided on the inner circumferential surface, the ratio of the reduced diameter section being greater than the ratio of the expanded diameter section. With this configuration, a smooth bending curve can be obtained from the tip of the handle to the handle.
[0020] A fishing rod according to the present invention includes the above-mentioned fishing rod handle and a first fishing rod tip connected to the first tapered portion.
[0021] A fishing rod according to the present invention includes the above-mentioned fishing rod handle and a second fishing rod tip connected to the second tapered portion.
[0022] In addition, the fishing rod according to the present invention comprises the above-mentioned fishing rod handle, a first tip rod connected to the first tapered portion, and a second tip rod that is replaceable with the first tip rod and connected to the second tapered portion.
[0023] Preferably, the second tip rod is a solid rod. [Effects of the Invention]
[0024] As described above, the fishing rod head and the fishing rod equipped with the fishing rod according to the present invention allow the tip of the fishing rod to be changed depending on the type of fishing. [Brief explanation of the drawings]
[0025] [Figure 1] FIG. 2 is a front view showing the fishing rod in a separated state according to the embodiment of the present invention. [Figure 2] FIG. [Figure 3]1A and 1B are front views showing the main parts of the fishing rod, in which (a) shows the state in which the first tip rod is connected, and (b) shows the state in which the second tip rod is connected. [Figure 4] 1A and 1B are front views showing the main parts of the fishing rod, in which FIG. 1A shows the first tip rod in a detached state, and FIG. 1B shows the first tip rod in a connected state. [Figure 5] 10A and 10B are front views showing the main parts of the fishing rod, in which (a) shows the second tip rod in a detached state, and (b) shows the second tip rod in a connected state. [Figure 6] 1A and 1B are cross-sectional views showing the main parts of the fishing rod, in which FIG. 1A shows the state in which the first tip rod is connected, and FIG. 1B shows the state in which the second tip rod is connected. [Figure 7] FIG. 2 is a cross-sectional view of the main part of the fishing rod handle. [Figure 8] FIG. 2 is a cross-sectional view of the main part of the fishing rod handle. [Figure 9] Schematic diagram showing the manufacturing process of the fishing rod head. [Figure 10] Schematic diagram showing the manufacturing process of the fishing rod head. DETAILED DESCRIPTION OF THE INVENTION
[0026] A fishing rod according to one embodiment of the present invention will be described below with reference to Figs. 1 to 10. Figs. 1 and 2 show the overall configuration of the fishing rod of this embodiment. As shown in Fig. 1, the fishing rod of this embodiment has a three-piece configuration, but the number of rod bodies can be arbitrary. The fishing rod also has multiple fishing line guides 5 on the outer circumferential surface of the rod body. Note that the fishing rod of this embodiment is suitable for double-bearing reels, but may also be suitable for spinning reels. Note that in Fig. 1, the rod tip direction is indicated by arrow A, and the rod butt direction is indicated by arrow B.
[0027] The fishing rod comprises a first tip rod 1, a second tip rod 2, a holding rod 3, and a butt rod 4. One or more intermediate rods may be provided between the butt rod 4 and the holding rod 3. The holding rod 3 and butt rod 4 may be integrated. A reel seat 6 is provided on the butt rod 4. The butt rod 4 and the holding rod 3 are hollow. Although the butt rod 4 in this embodiment does not have a fishing line guide 5, a fishing line guide 5 may also be provided on the butt rod 4. The first tip rod 1, the second tip rod 2, and the holding rod 3 are each provided with multiple fishing line guides 5.
[0028] As shown in Figure 2, the holding rod 3 is detachably connected to the rod tip 4a of the base rod 4. The first tip rod 1 and the second tip rod 2 are selectively detachably connected to the rod tip 3a of the holding rod 3. That is, either the first tip rod 1 or the second tip rod 2 is connected to the rod tip 3a of the holding rod 3. Either the first tip rod 1 or the second tip rod 2 can be connected to the rod tip 3a of the holding rod 3 for use.
[0029] The fishing rod 3 has a holding portion 10 at its tip 3a. The first fishing rod 1 and the second fishing rod 2 are selectively connected to the holding portion 10. The fishing line guide 5 of the fishing rod 3 is located away from the holding portion 10 toward the butt end of the fishing rod. Figures 3(a), 4, and 6(a) show the first fishing rod 1 connected to the holding portion 10. Figures 3(b), 5, and 6(b) show the second fishing rod 2 connected to the holding portion 10. In this way, the first fishing rod 1 is connected to the outer circumferential surface of the holding portion 10, and the second fishing rod 2 is connected to the inner circumferential surface of the holding portion 10. In other words, the first fishing rod 1 is connected to the fishing rod 3 with a straight joint, and the second fishing rod 2 is connected to the fishing rod with a reverse straight joint. The connection length J1 of the first tip rod 1 to the holding rod 3 is approximately equal to the connection length J2 of the second tip rod 2 to the holding rod 3, but they may be different.
[0030] The first tip rod 1 is preferably a hollow rod (hollow rod) called a tubular tip, but may also be a solid rod (solid rod) called a solid tip. The first tip rod 1 in this embodiment is hollow. The second tip rod 2 is preferably solid, but may also be hollow. The second tip rod 2 in this embodiment is solid. The second tip rod 2 is preferably softer and more flexible than the first tip rod 1. The axial lengths of the first tip rod 1 and the second tip rod 2 may be approximately the same or different. The overall length of the fishing rod when the first tip rod 1 is connected to the holding rod 3 and the overall length of the fishing rod when the second tip rod 2 is connected to the holding rod 3 may be approximately the same or different.
[0031] The number of line guides 5 on the first tip rod 1 and the number of line guides 5 on the second tip rod 2 are equal to each other, but they may be different, and preferably are equal to each other. Furthermore, the line guides 5 on the first tip rod 1 and the line guides 5 on the second tip rod 2 may be the same or of the same specifications, or they may be different from each other. In this embodiment, the first tip rod 1 is provided with line guides 5 suitable for a tubular tip, and the second tip rod 2 is provided with line guides 5 suitable for a solid tip. For example, the line guides 5 on the first tip rod 1 can be inclined more toward the tip than the line guides 5 on the second tip rod 2.
[0032] 7 is a schematic diagram showing a cross section of the holding part 10. The holding part 10 has on its outer circumferential surface a first tapered section 12 that gradually increases in diameter from the tip open end 11 toward the butt, a first peak section 13 that continues from the first tapered section 12 toward the butt and has the largest diameter on the outer circumferential surface of the holding part 10, and a reduced diameter section 14 that continues from the first peak section 13 toward the butt and gradually reduces in diameter toward the butt. Because the first tapered section 12 is provided on the outer circumferential surface of the holding part 10, the first tip rod 1 can be smoothly and reliably connected to the radially outer side of the holding part 10.
[0033] The diameter D2 of the first peak portion 13 is the largest in the handle portion 10. In this embodiment, the first peak portion 13 has a predetermined length L2 in the axial direction. However, the first peak portion 13 may have substantially no axial length. The rate of diameter reduction (gradient θ3) of the reduced diameter portion 14 is greater than the rate of diameter expansion (gradient θ1) of the first tapered portion 12. The gradient θ3 of the reduced diameter portion 14 is steeper than the gradient θ1 of the first tapered portion 12. The diameter D3 of the reduced diameter portion 14 at the butt end (end toward the butt) is smaller than the outer diameter D1 at the tip opening end 11. The axial length L3 of the reduced diameter portion 14 is shorter than the axial length L1 of the first tapered portion 12. The main outer peripheral surface 15 of the handle portion 3 is continuous with the reduced diameter portion 14 toward the butt end. The main outer peripheral surface 15 gradually expands in diameter toward the butt end. The gradient θ4 of the main outer peripheral surface 15 is smaller than the gradient θ1 of the first tapered portion 12. The gradient θ4 of the main outer peripheral surface 15 is the basic gradient of the outer peripheral surface of the rod handle 3.
[0034] The handle 10 has, on its inner circumferential surface, a second tapered section 20 that gradually narrows in diameter from the tip open end 11 toward the butt end, and an expanded diameter section 21 that continues from the second tapered section 20 toward the butt end and gradually widens in diameter toward the butt end. The axial length L4 of the second tapered section 20 is shorter than the axial length L1 of the first tapered section 12. The rate of narrowing of the second tapered section 20 (gradient θ2) may be the same as or different from the gradient θ1 of the first tapered section 12, but is the same in this embodiment. The gradient θ2 of the second tapered section 20 is smaller than the gradient θ3 of the narrowed diameter section 14. Because the second tapered section 20 is provided on the inner circumferential surface of the handle 10, the second tip rod 2 can be smoothly and reliably connected to the radially inner side of the handle 10.
[0035] The butt end of the second tapered section 20 forms a second peak section 22, which has the smallest diameter in the handle section 10. The second peak section 22 does not have a substantial axial length, but may have a predetermined axial length. The second peak section 22 is offset in the axial direction from the first peak section 13, and is preferably located further toward the tip of the rod than the first peak section 13.
[0036] The expanded diameter portion 21 is the main inner peripheral surface of the rod head 3. The expanded diameter portion 21 extends further toward the butt end than the reduced diameter portion 14. The gradient θ5 of the expanded diameter portion 21 is the basic gradient of the inner peripheral surface of the rod head 3. It is smaller than the gradient θ2 of the second tapered portion 20. Furthermore, the gradient θ5 of the expanded diameter portion 21 is smaller than the gradient θ3 of the reduced diameter portion 14.
[0037] The holding portion 10 is preferably composed of multiple layers. Figure 8 shows an example of the layer structure of the holding portion 10. The holding portion 10 has a first layer 31, a second layer 32 located radially inward of the first layer 31, and a third layer 33 located radially inward of the second layer 32. The first layer 31 is the outermost layer of the holding portion 10, and the outer peripheral surface of the holding portion 10 is provided on the first layer 31. The third layer 33 is the innermost layer of the holding portion 10, and the inner peripheral surface of the holding portion 10 is provided on the third layer 33. The first layer 31 and the third layer 33 are provided only at the tip of the holding rod 3. That is, they are provided only at the holding portion 10, and the second layer 32 is provided throughout the entire length of the holding rod 3. The second layer 32 may 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 provided on the outer peripheral surface of the second layer 32, and the third layer 33 is provided on the inner peripheral surface of the second layer 32.
[0038] The first layer 31, the second layer 32, and the third layer 33 extend from the tip open end 11 toward the butt end. The axial length LL1 of the first layer 31 is longer than the axial length LL3 of the third layer 33. The butt end 31a of the first layer 31 is located further toward the butt end than the second peak portion 22, and further toward the butt end than the butt end 33a of the third layer 33. The butt end 33a of the third layer 33 is located further toward the butt end than the second peak portion 22. The butt end 33a of the third layer 33 is located further toward the butt end than the first peak portion 13.
[0039] The thickness of each of the first layer 31, the second layer 32, and the third layer 33 at the rod tip open end 11 is arbitrary, but preferably the thickness of the third layer 33 at the rod tip open end 11 is thinner than that of the second layer 32, which is also thinner than that of the first layer 31. Also, preferably the thickness of the second layer 32 at the rod tip open end 11 is thicker than the thickness of the first layer 31 at the rod tip open end 11.
[0040] The first tapered portion 12 and the second tapered portion 20 are preferably formed by cutting. The first layer 31 is provided with the first tapered portion 12, the first peak portion 13, and the reduced diameter portion 14. The third layer 33 is provided with the second tapered portion 20, the second peak portion 22, and a portion of the expanded diameter portion 21. The second layer 32 is provided with the main outer circumferential surface 15 and most of the expanded diameter portion 21.
[0041] The first layer 31 comprises a first tubular section 41 that gradually thickens from the tip opening end 11 toward the butt end; a second tubular section 42 that continues from the first tubular section 41 toward the butt end and has a substantially constant thickness; and a third tubular section 43 that continues from the second tubular section 42 toward the butt end and gradually thins toward the butt end. The outer peripheral surface of the first tubular section 41 is the first tapered section 12, the outer peripheral surface of the second tubular section 42 is the first peak section 13, and the outer peripheral surface of the third tubular section 43 is the reduced diameter section 14. The thickness of the first layer 31 is greatest at the second tubular section 42. The butt end 31a of the first layer 31 is the butt end of the reduced diameter section 14, and the thickness of the first layer 31 at the butt end 31a is zero. The thickness of the handle portion 10 is greatest at the first peak section 13.
[0042] The second layer 32 includes a fourth tubular section 44 with a substantially constant thickness extending from the tip open end 11 toward the butt end; a fifth tubular section 45 that continues from the fourth tubular section 44 toward the butt end and gradually thickens toward the butt end; and a sixth tubular section 46 that continues from the fifth tubular section 45 toward the butt end and has a substantially constant or gradually thicker thickness toward the butt end. The third layer 33 is located on the inner circumferential surfaces of the fourth tubular section 44 and the fifth tubular section 45. The third layer 33 is not located on the inner circumferential surface of the sixth tubular section 46. The axial length LL2 of the fourth tubular section 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 peak portion 13 extends further toward the butt end than the butt end 44a of the fourth tubular section 44 (the tip end of the fifth tubular section 45). The fifth tubular portion 45 is thicker toward the butt end because the diameter of its inner circumferential surface is reduced. The sixth tubular portion 46 extends to the butt end 3b of the rod 3.
[0043] The third layer 33 has a seventh tubular section 47 that gradually becomes thicker from the tip open end 11 toward the butt end, an eighth tubular section 48 that continues toward the butt end of the seventh tubular section 47 and has a substantially constant thickness, and a ninth tubular section 49 that continues toward the butt end of the eighth tubular section 48 and gradually becomes thinner toward the butt end. The inner circumferential surface of the seventh tubular section 47 is the second tapered section 20. The inner circumferential surfaces of the eighth tubular section 48 and the ninth tubular section 49 and the inner circumferential surface of the sixth tubular section 46 of the second layer 32 are the expanded diameter section 21. The butt end portion 33a of the third layer 33 is located further toward the tip end than the butt end portion 31a of the first layer 31.
[0044] The pole-holding rod 3 is manufactured by winding prepregs containing various reinforcing fibers around a mandrel 50 and then heating and baking them. An example of the prepregs used to manufacture the pole-holding rod 3 of this embodiment is shown as a schematic diagram in FIG. 9. 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 wound around the mandrel 50 in this order. The length, number of turns, and number of sheets of each prepreg can be set in various ways.
[0045] The first prepreg 51 has first reinforcing fibers 61, the second prepreg 52 has second reinforcing fibers 62, and the third prepreg 53 has third reinforcing fibers 63. All of these reinforcing fibers are long fibers. The axial bending rigidity of the third reinforcing fibers 63 is preferably smaller than the axial bending rigidity of the second reinforcing fibers 62, and the axial bending rigidity of the first reinforcing fibers 61 is preferably smaller than the axial bending rigidity of the second reinforcing fibers 62.
[0046] The first reinforcing fibers 61 are preferably circumferentially arranged, i.e., counter-grained. The first reinforcing fibers 61 are preferably carbon fibers. The first reinforcing fibers 61 may be arranged along the axial direction or along a direction inclined at a predetermined angle relative to the axial direction, and it is also preferable to use fibers with lower elasticity than the second reinforcing fibers 62.
[0047] The second reinforcing fibers 62 are used to ensure the bending rigidity of the rod 3, and are the main reinforcing fibers of the rod 3. The second reinforcing fibers 62 are preferably oriented in the axial direction, i.e., in a normal grain. The second reinforcing fibers 62 are preferably carbon fibers.
[0048] The third reinforcing fibers 63 are preferably glass fibers, and are preferably cross fibers in which the fibers cross each other. That is, the third reinforcing fibers 63 preferably have first glass fibers 63a aligned in one direction and second glass fibers 63b crossing the first glass fibers 63a. The first glass fibers 63a and the second glass fibers 63b can be aligned, for example, along a 0-degree (parallel) direction along the axial direction, known as the grain direction, or along a 90-degree (perpendicular) direction along the axial direction, known as the cross-grain direction. They may also be aligned along a direction inclined by a predetermined angle. In this case, the first glass fibers 63a and the second glass fibers 63b cross each other at an inclination angle of, for example, ±45 degrees relative to the axial direction.
[0049] Figure 10 shows the state of the wire rod 3 immediately after heating and firing. The wire rod 3's wire rod 10 is then machined to form the first tapered section 12 and the second tapered section 20. The two-dot chain lines in Figure 8 indicate the outer and inner surfaces of the wire rod 10 before cutting. In this way, the first tapered section 12 is formed by cutting the first layer 31, and the second tapered section 20 is formed by cutting the third layer 33. Meanwhile, the reduced diameter section 14 is formed by the first prepreg 51, and the expanded diameter section 21 is formed by the outer peripheral surface of the mandrel 50.
[0050] As described above, the first tapered portion 12 is formed on the outer circumferential surface of the handle 10, so the first tip rod 1 can be connected to the first tapered portion 12 in a straight jointed state. If the first tip rod 1 is a tubular tip, tension is generated in the tip, making the fishing rod a center-action rod. This makes the fishing rod suitable for fishing that requires a strong repulsive force in the tip, such as light jigging. On the other hand, the second tapered portion 20 is formed on the inner circumferential surface of the handle 10, so the second tip rod 2 can be connected to the second tapered portion 20 in a straight jointed state. If the second tip rod 2 is a solid tip, flexibility is imparted to the tip, making the fishing rod a center-action rod. This makes the fishing rod suitable for fishing that requires a delicate tip, such as tairaba (sea bream rubber fishing), metal squid jigs, and tip-run egging.
[0051] In this way, either the first tip rod 1 or the second tip rod 2 can be selected and connected to the handle rod 3 depending on the type of fishing, the angler's preferences, and the situation. For example, when fishing from a boat, even if one fishing rod is brought along, by bringing both the first tip rod 1 and the second tip rod 2, one can handle relatively intense fishing such as light jigging, as well as relatively slow and delicate fishing such as tai-rubber fishing. For example, even if the target fish or fishing method differs between the first and second halves of a fishing session, one fishing rod can be used for both. By appropriately switching between the first tip rod 1 and the second tip rod 2, one fishing rod can be used for both. Since one fishing rod can be used for both, only one reel is required, eliminating the need to change reels. However, a spare reel can also be attached. Furthermore, by preparing other tip rods with different action (not shown), the range of fishing applications can be further expanded.
[0052] Even if you change the tip rod, the handle 3 remains the same, so the power of the belly (body) of the fishing rod remains the same. Therefore, the fishing rod's resistance to the pull of the fish remains almost the same. Also, even if you change the tip rod, the butt rod 4 remains the same, so the feel and grip around the butt rod 4 are also the same. You can handle multiple types of fishing with a single fishing rod that you are familiar with and love.
[0053] Furthermore, because the first tapered portion 12 is formed in the first layer 31, the first tapered portion 12 can be easily formed on the outer peripheral surface of the holding portion 10 without affecting the second layer 32. Therefore, the second layer 32 can easily ensure the bending rigidity of the holding rod 3. Similarly, because the second tapered portion 20 is formed in the third layer 33, the second tapered portion 20 can be easily formed on the inner peripheral surface of the holding portion 10 without affecting the second layer 32. Therefore, the second layer 32 can easily ensure the bending rigidity of the holding rod 3.
[0054] If the first layer 31 has a lower bending rigidity in the axial direction than the second layer 32, the second layer 32 can easily ensure the bending rigidity of the holding rod 3, and furthermore, the first layer 31 can easily prevent cracking of the holding part 10 when the first tip rod 1 or the second tip rod 2 connected to the holding rod 3 bends. In particular, if the first layer 31 has first reinforcing fibers 61 along the circumferential direction, cracking of the holding part 10 can be easily prevented. If the first reinforcing fibers 61 are carbon fibers, the weight of the holding part 10 can be reduced.
[0055] If the second layer 32 has second reinforcing fibers 62 along the axial direction, the bending rigidity of the tip rod can be easily ensured by the second layer 32. If the second reinforcing fibers 62 are carbon fibers, the weight of the tip rod 3 can be easily reduced.
[0056] When the third layer 33 has the third reinforcing fibers 63, the second tapered portion 20 can be easily formed while ensuring the strength of the inner peripheral surface of the holding portion 10. When the third reinforcing fibers 63 have the first glass fibers 63a and the second glass fibers 63b that cross each other, a smooth bending curve can be obtained from the second tip rod 2 to the holding rod 3 when the second tip rod 2 is connected to the second tapered portion 20. When the gradient θ3 of the reduced diameter portion 14 is larger than the gradient θ5 of the expanded diameter portion 21, a smooth bending curve can be obtained from the first tip rod 1 or the second tip rod 2 to the holding rod 3.
[0057] If the butt end 31a of the first layer 31 is positioned further towards the butt end than the butt end 33a of the third layer 33, the stress generated in the holding part 10 can be dispersed in the axial direction when the first tip rod 1 or the second tip rod 2 is bent. In other words, stress concentration in the holding part 10 can be prevented, and damage to the holding rod 3 can be prevented. In particular, when the second tip rod 2 is connected to the second tapered part 20, stress concentration in the holding part 10 can be effectively prevented, and damage to the holding rod 3 can be effectively prevented.
[0058] If the first peak portion 13 and the second peak portion 22 are misaligned from each other in the axial direction, the stress generated in the holding portion 10 when the first tip rod 1 or the second tip rod 2 bends can be dispersed in the axial direction, preventing damage to the holding portion 10. In particular, damage to the holding portion 10 when the second tip rod 2 is connected to the second tapered portion 20 can be effectively prevented. Furthermore, if the first peak portion 13 is located closer to the butt of the rod than the second peak portion 22, stress concentration in the holding portion 10 can be further prevented, and damage to the holding portion 10 can be further prevented. [Explanation of symbols]
[0059] 1. First tip rod 2. Second tip rod 3 Fishing rod 3a Rod tip 3b Rod butt end 4. Main rod 4a Rod tip 5 Fishing Line Guide 6 reel seat 10. Head holder 11 Open end of rod tip 12 First tapered section 13 First Peak 14 Reduced diameter part 15 Main outer surface 20 Second tapered section 21 Expanded diameter part 22 Second Peak 31 1st layer 31a Rod butt end 32 2nd layer 33 3rd layer 33a Rod butt end 41 First cylinder part 42 Second cylinder part 43 Third cylinder part 44 4th cylinder part 44a Rod butt end 45 5th cylinder part 46 6th cylinder part 47 7th cylinder part 48 8th cylinder part 49 9th cylinder part 50 mandrels 51 First prepreg 52 Second prepreg 53 Third prepreg 61 First reinforced fiber 62 Second reinforcement fiber 63 Third reinforcement fiber 63a First Glass Fiber 63b Second glass fiber
Claims
1. A rod to which a tip rod is connected, A first tapered portion that expands in diameter toward the butt of the rod and is provided on the outer circumferential surface; A second tapered portion that is tapered toward the butt of the rod and is provided on the inner circumferential surface; A rod having a handle portion having a handle portion.
2. The holding portion is a first layer having the first tapered portion provided on an outer circumferential surface thereof; 2. The rod according to claim 1, further comprising a second layer provided radially inside the first layer.
3. 3. The rod according to claim 2, wherein the first layer has a lower bending stiffness along the axial direction than the second layer.
4. 4. The rod according to claim 3, wherein the first layer has first reinforcing fibers arranged along the circumferential direction.
5. 5. The pole according to claim 4, wherein the second layer has second reinforcing fibers along the axial direction.
6. 6. The rod according to claim 5, wherein at least one of the first reinforcing fibers and the second reinforcing fibers is a carbon long fiber.
7. The holding portion is 7. A rod according to claim 2, further comprising a third layer having the second tapered portion on its inner circumferential surface.
8. 8. A rod with a handle according to claim 7, wherein the end of the first layer in the butt direction is located further towards the butt direction than the end of the third layer in the butt direction.
9. 9. A pole according to claim 7 or 8, wherein the third layer comprises third reinforcing fibers.
10. 10. The rod according to claim 9, wherein the third reinforcing fibers have first glass fibers aligned in one direction.
11. 11. The pole according to claim 10, wherein the third reinforcing fibers have second glass fibers aligned in a direction intersecting the direction of the first glass fibers.
12. the first tapered portion has a first peak portion with a maximum diameter, the second tapered portion has a second peak portion with a minimum diameter, 12. The rod according to claim 1, wherein the first peak portion and the second peak portion are offset from each other in the axial direction.
13. The rod with handle according to claim 12, wherein the first peak portion is located closer to the butt end than the second peak portion.
14. The holding portion is A tapered portion that gradually reduces in diameter from the first peak portion toward the butt end and is provided on the outer circumferential surface; The diameter of the rod gradually increases from the second peak portion toward the butt end of the rod, and the ...
14. The rod according to claim 12 or 13, wherein a ratio of diameter reduction of the reduced diameter portion is greater than a ratio of diameter expansion of the expanded diameter portion.
15. A fishing rod according to any one of claims 1 to 14; A first tip rod connected to the first tapered portion; A fishing rod equipped with
16. A fishing rod according to any one of claims 1 to 14; A second tip rod connected to the second tapered portion; A fishing rod equipped with
17. A fishing rod according to any one of claims 1 to 14; A first tip rod connected to the first tapered portion; a second tip rod that is replaceable with the first tip rod and is connected to the second tapered portion.
18. 18. The fishing rod according to claim 16 or 17, wherein the second tip is a solid rod.