Fishing rod

Abstract

To provide a fishing rod comprising a grip whose weight can be reduced, and whose operability can be improved.SOLUTION: A fishing rod comprises a grip 10 formed by winding prepregs made of fiber-reinforced resin, and having a hollow structure. The grip 10 is provided with a through hole 15 or 15a-15e penetrating in a radial direction (or a depression depressed in the radial direction from an outer peripheral surface).SELECTED DRAWING: Figure 15

Description

[Technical Field]

[0001] The present invention relates to a fishing rod, and more particularly to a fishing rod having a grip integrally formed from fiber-reinforced resin. [Background technology]

[0002] Conventionally, fishing rods equipped with grips made of fiber-reinforced resin have been known, as disclosed in, for example, Patent Documents 1 and 2. The grip is configured to transition from a small diameter section to a large diameter section via an enlarged diameter section (tapered section) toward the rear end of the fishing rod, taking into consideration weight reduction, operability, and gripping ability. Such fiber-reinforced resin grips can be formed by winding multiple fiber-reinforced resin sheet members (hereinafter also referred to as prepregs) around a core metal (mandrel) of the same external shape, followed by thermal curing and de-cored.

[0003] The grip disclosed in Patent Document 1 improves workability by separating the prepreg into a small-change tubular portion and a large-change tubular portion. The prepreg constituting the large-change tubular portion includes vertical sheets in which reinforcing fibers are aligned in the axial direction and horizontal sheets in which reinforcing fibers are aligned in the circumferential direction, and the large-change tubular portion is formed by laminating these.

[0004] The grip disclosed in the above-mentioned Patent Document 2 has a hollow structure, and an auxiliary sheet is laminated on the large diameter portion to improve strength. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent Publication No. 2014-132857 [Patent Document 2] Patent Publication No. 2020-162463 Summary of the Invention [Problem to be solved by the invention]

[0006] As mentioned above, when the grip to be held is made of prepreg, the surface becomes smooth, which causes a problem of poor operability. Furthermore, it is preferable to further reduce the weight of the grip to improve operability.

[0007] The present invention has been made in view of the above-mentioned problems, and has as its object to provide a fishing rod with a grip that is lightweight and has improved operability. [Means for solving the problem]

[0008] In order to achieve the above-mentioned object, the fishing rod according to the present invention is provided with a grip having a hollow structure formed by winding a prepreg made of a fiber-reinforced resin, and the grip is characterized in that it has a through-hole penetrating in the radial direction or a recess recessed in the radial direction from the outer peripheral surface.

[0009] The hollow grip described above is lightweight and is formed by winding fiber-reinforced resin prepreg around a grip-shaped core, then heating and curing it. The grip has through-holes that run through in the radial direction or recesses that are recessed in the radial direction from the outer periphery, which not only makes it even lighter, but also makes it easier for the pads of the fingers to catch when gripped or held, making it less likely to slip, and improving operability. [Effects of the Invention]

[0010] According to the present invention, a fishing rod having a grip that improves operability can be obtained. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a diagram showing an example of a fishing rod according to the present invention, and is a diagram showing a first embodiment of a grip portion. FIG. [Figure 2] 2 is a schematic diagram of the grip shown in FIG. 1. [Figure 3]1A and 1B are diagrams illustrating the laminated structure of a fishing rod grip according to the present invention, where FIG. 1A shows a conventional laminated structure, and FIG. 1B shows an example of the laminated structure according to the present invention. [Figure 4] FIG. 2 is a diagram showing an arrangement of prepregs constituting the grip according to the first embodiment. [Figure 5] 10A and 10B are diagrams showing modified examples of prepregs constituting bias layers. [Figure 6] FIG. 10 is a diagram showing a second embodiment of the grip, and is a schematic diagram showing the positions where bias layers are disposed. [Figure 7] FIG. 10 is a diagram showing an arrangement of prepregs constituting a grip according to a second embodiment. [Figure 8] FIG. 4 is a cross-sectional view of a portion where a bias layer is disposed, taken along a direction perpendicular to the axial direction. [Figure 9] FIG. 10 is a diagram showing a third embodiment of the grip, illustrating the laminated structure of the portion where the bias layer is disposed. [Figure 10] FIG. 10 is a diagram showing an arrangement of prepregs constituting a grip according to a third embodiment. [Figure 11] FIG. 10 is a diagram showing a fourth embodiment of the grip, and is a schematic diagram showing the positions where bias layers are disposed. [Figure 12] FIG. 10 is a diagram showing an arrangement of prepregs constituting a grip according to a fourth embodiment. [Figure 13] FIG. 4 is a cross-sectional view of a portion where a bias layer is disposed, taken along a direction perpendicular to the axial direction. [Figure 14] FIG. 10 is a diagram showing a fifth embodiment of the grip, illustrating the layered structure of the grip. [Figure 15] 1(a) to 1(f) are diagrams showing various variations of the configuration of the through-hole (recess) formed in the grip, with the left side of each diagram being a perspective view and the right side being a side view. [Figure 16] 10A and 10B are diagrams illustrating the preferred positions of the through-holes (recesses) formed in the grip, where (a) shows the relationship with the trigger, and (b) shows the relationship with the spinning reel attached to the reel seat. DETAILED DESCRIPTION OF THE INVENTION

[0012] FIG. 1 is a diagram showing an example of a fishing rod according to the present invention, showing the configuration of a grip portion, and FIG. 2 is a schematic diagram of the grip. The grip 10 of this embodiment is provided at the rear end of the rod shaft (butt rod) 2 that constitutes the fishing rod 1, and comprises a small diameter portion 11, an enlarged diameter portion (tapered portion) 12 that gradually enlarges in diameter from the rear end of the small diameter portion 11 toward the rear side (butt side), and a large diameter portion 13 that extends from the rear end of the enlarged diameter portion 12 toward the rear side (butt side).

[0013] Among the components of the grip 10, the small diameter portion 11 may be integrally formed with the rod 2, or may be integrally formed together with the enlarged diameter portion 12 and the large diameter portion 13 as components of the grip 10 using a fiber-reinforced resin sheet material (prepreg) described below. The rod 2 is inserted into the grip 10, and the outer surface of the rod and the inner surface of the grip are attached by adhesive or the like, and a cavity is formed between the outer surface of the rod 2 and the inner surfaces of the enlarged diameter portion 12 and the large diameter portion 13 of the grip 10.

[0014] The fishing rod is not limited in its configuration and includes a rod with multiple rods joined together, a single rod, etc. The rod may be tubular, solid, or a combination of these. The joint structure of the multiple rods is not limited to a telescopic type, a straight joint, a spigot joint, etc., and the number of joints is also not limited.

[0015] The rod 2 is provided with a known reel seat 3 on which a dual-bearing reel or a spinning reel can be attached, and each rod is provided with fishing line guides (not shown) at predetermined intervals to guide the fishing line released from the reel attached to the reel seat. The reel seat 3 is provided with a mounting portion 3a on which the reel legs are placed, and a movable hood 3b and a fixed hood 3c that fasten and fix the front and rear of the reel legs. A trigger 5 that can be hooked with a finger is integrally formed on the opposite side of the mounting portion 3a.

[0016] A rear grip 6 is provided on the rear side of the reel seat 3, and the above-mentioned grip (rear grip) 10 is provided in the rod butt area rearward of the rear grip 6. In this case, the rear end opening of the large diameter portion 13 is closed by a butt plug 14.

[0017] The grip 10 having the above-described shape is integrally formed from fiber-reinforced resin, similar to the structure of the rod that constitutes a fishing rod, and is formed into a hollow shape by winding multiple fiber-reinforced resin sheet members (prepreg) around a core bar of the same external shape. The grip 10 has a predetermined length in the axial direction and is attached to the outer surface of the rod 2 to form an integral unit. In this case, the connecting structure and connecting position of the rod 2 and the grip 10 are not limited; for example, the outer surface of the rear end side of the fiber-reinforced resin rod 2 may be bonded to the small diameter portion 11 or the enlarged diameter portion 12, or the rod 2 may constitute the small diameter portion 11 of the grip 10.

[0018] As described above, the grip 10 is configured as a cylindrical body made of fiber-reinforced resin, and as is well known, is formed in accordance with a standard method, such as winding a fiber-reinforced resin sheet material (prepreg) formed by impregnating reinforced fibers (mainly carbon fibers, glass fibers, aramid fibers, etc.) with a matrix resin such as epoxy resin, polyester resin, or phenolic resin around a core, subjecting the core to a heating process, and then removing the core.

[0019] Next, the basic structure of the grip 10, which is integrally formed from a prepreg made of fiber-reinforced resin, will be described. FIG. 3 shows the laminated structure of the prepreg that forms the grip, where (a) is a view showing the laminated structure of a conventional general prepreg, and (b) is a view showing the laminated structure of the prepreg according to the present invention.

[0020] The present invention is characterized in that the grip 10 is provided with through holes 15 that penetrate in the radial direction. By forming such through holes, the weight of the grip portion can be reduced, and when gripped and held, the pads of the fingers can be easily placed on the grip, preventing slippage and improving operability. Regarding the location where the through holes 15 are formed, taking into consideration gripping and operability, the positions of the through holes 15 are preferably the enlarged diameter portion 12 and the large diameter portion 13 of the grip 10 (range L shown in FIG. 2 ). However, the through holes 15 may be formed in either the enlarged diameter portion 12 or the large diameter portion 13, or in the range of the small diameter portion 11. In addition to through holes, recesses recessed in the radial direction from the outer peripheral surface may be formed, or a combination of through holes and recesses may be formed.

[0021] As will be described later, the shapes of the through holes and recesses can be modified, and the depth of the recesses can also be modified, so that they can be formed into, for example, a grid shape or a dimple shape.

[0022] As described above, the grip 10 is formed into a cylindrical shape from fiber-reinforced resin prepregs. Typically, such fiber-reinforced resin prepregs are formed as prepregs 20, in which the reinforcing fibers are oriented in the axial direction, and prepregs 21, in which the reinforcing fibers are oriented in the circumferential direction, as shown in Fig. 3(a). These prepregs (also called unidirectional sheets or UD sheets) 20, 21 are wound around a core, heat-treated, and then de-cored, and the grip 10 is formed in a state where multiple layers are laminated (in the figure, the prepreg 20 is the outer layer).

[0023] However, if the above-described through holes 15 (depressions) are formed in such a laminated structure, the strength of the area around the through holes 15 will decrease, which may cause problems such as cracks. In particular, the edge areas around the through holes where fingers rest are areas where strength is reduced and are therefore prone to cracks. The present invention is characterized by arranging bias layers 25 made of prepregs 24 in which reinforcing fibers are oriented in a direction inclined relative to the axial direction and in a cross state, and forming through holes 15 (depressions) in the areas where the bias layers 25 are arranged, as shown in Figure 3(b).

[0024] In the prepreg 24 constituting the bias layer 25, the reinforcing fibers are oriented at an angle relative to the axial direction, which increases strength in the bending direction, twisting direction, and crushing direction, making it possible to prevent a decrease in strength even when the above-mentioned through holes 15 are formed. In particular, it is preferable to arrange the reinforcing fibers in the outermost layer, which is cut first when drilling the through holes 15. Furthermore, it is preferable that the reinforcing fibers of the prepreg 24 constituting the bias layer 25 are configured in a cross shape, oriented at the same inclination angles α and β (see FIG. 5) of the reinforcing fibers relative to the axial direction, and it is preferable that they are set within a range of ±30° to ±60°, and particularly approximately ±45°.

[0025] In the present invention, the grip 10 includes a layer of prepreg 20 in which the reinforcing fibers are oriented in the axial direction of the grip, and a layer of prepreg 21 in which the reinforcing fibers are oriented in the circumferential direction of the grip (forming the base material of the grip, hereinafter, such a prepreg layer will also be referred to as main layer 22), and a layer of prepreg 24 in which the reinforcing fibers are oriented in a direction oblique to the axial direction of the grip to form a cross state (functioning to reinforce the areas around the through holes and depressions, hereinafter, such a prepreg layer will also be referred to as bias layer 25).

[0026] The main layer 22 may be one or more layers, and may be composed of a single knitted sheet knitted so that the reinforcing fibers are oriented in both the axial and circumferential directions. Alternatively, it may be composed of two or more layers including a unidirectional sheet in which the reinforcing fibers are oriented in the axial direction and a unidirectional sheet in which the reinforcing fibers are oriented in the circumferential direction. These unidirectional sheets may be laminated together to form a two or more layer structure, or a two or more layer structure in which the unidirectional sheets are spaced apart in the radial direction. Furthermore, the main layer 22 may be composed of two or more layers by winding two or more plies of the knitted sheet or unidirectional sheet.

[0027] The bias layer 25 may have one or more layers, and may be formed from a single-layer knitted sheet in which reinforcing fibers are knitted so as to be inclined relative to the axial and circumferential directions. Alternatively, the bias layer 25 may have a two-layer or more structure in which a first unidirectional sheet in which reinforcing fibers are oriented in an inclined direction and a second unidirectional sheet in which reinforcing fibers are oriented in an inclined direction different from the first inclined direction are laminated together, or a two-layer or more structure in which the first unidirectional sheet and the second unidirectional sheet are spaced apart in the radial direction. Furthermore, the bias layer 25 may be formed from two or more layers by winding two or more plies of the knitted sheet or unidirectional sheet.

[0028] Next, a grip having the main layer and bias layer configured as described above will be described. FIG. 4 shows a first embodiment of a fishing rod grip according to the present invention, and is a diagram showing the arrangement of prepregs that make up the grip.

[0029] In this embodiment, prepregs are sequentially wound around a mandrel 100 having a small diameter section 101, an enlarged diameter section 102, and a large diameter section 103 formed thereon, which are similar in configuration to the grip 10. The wound prepregs are, from the inner layer side, prepreg 20 in which the reinforcing fibers are axially oriented and prepreg 21 in which the reinforcing fibers are circumferentially oriented, and these prepregs form a main layer 22. The outermost layer is prepreg 24 in which the reinforcing fibers are oriented in a direction oblique to the axial direction of the grip and are in a cross state, forming a bias layer 25 (inclined cross prepreg). This prepreg 24 is composed of a single knitted sheet knitted so that the reinforcing fibers are in the cross direction.

[0030] The prepregs 20, 21, and 24 are cut to form one ply around the core 100, and are wound around the core 100 with their edges butted together (some overlap may be provided). Therefore, the laminated structure of the grip 10 is such that, from the inner layer side, there is arranged one main layer 22 in which the reinforcing fibers are axially oriented, another main layer 22 in which the reinforcing fibers are circumferentially oriented, and one bias layer 25 on the outer side in which the reinforcing fibers are inclined with respect to the axial direction and in a cross state.

[0031] Then, the through holes 15 and / or depressions are formed in the surface of the grip thus formed, as described above. In this case, the bias layer 25 is disposed as the outermost layer, which makes it possible to prevent a decrease in strength while reducing the weight of the grip. Furthermore, by forming the bias layer 25 from a single knitted sheet (inclined cross prepreg 24), the rolling work can be completed with a single wrapping, improving workability.

[0032] 5(a) and 5(b), the bias layer may be formed of two unidirectional sheets. That is, a unidirectional sheet (first oblique prepreg) 24a in which the reinforcing fibers are oriented in a direction inclined with respect to the axial direction (positive inclination angle α) and a unidirectional sheet (second oblique prepreg) 24b in which the reinforcing fibers are oriented in a different direction with respect to the axial direction (negative inclination angle β) can be wound individually around the core 100.

[0033] Alternatively, the oblique direction prepregs 24a, 24b may be configured to be laminated together in an overlapping state as shown in Fig. 5(c), or may be configured to overlap the edges of the prepregs to form a single sheet, which is then wound around the core 100. Furthermore, the inclination angles α, β may be the same angle or different angles.

[0034] In this way, the bias layer may be made up of a single sheet material or multiple sheets of sheet material, and by using multiple sheets of sheet material, it is possible to achieve an optimal grip structure while maintaining strength.

[0035] The oblique prepreg constituting the bias layer 25 may be disposed over the entire length of the small diameter portion 11, the enlarged diameter portion 12, and the large diameter portion 13 of the grip 10, as shown in Figures 4 and 5, or may be disposed in the region where the through hole is formed, for example, in the range L from the enlarged diameter portion 12 to the large diameter portion 13, as shown in Figure 2.

[0036] In this way, by disposing the bias layer 25 only in the area where the through holes are formed, it is possible to maintain strength even when through holes or depressions are formed, and it is possible to reduce the amount of prepreg used, thereby making it possible to reduce weight and costs.

[0037] 6 to 8 are diagrams showing a second embodiment of a fishing rod grip according to the present invention, in which FIG. 6 is a schematic diagram showing the position where the bias layer is arranged, FIG. 7 is a diagram showing the arrangement of the prepregs that make up the grip, and FIG. 8 is a cross-sectional view in a direction perpendicular to the axial direction of the portion where the bias layer is arranged.

[0038] As shown in Fig. 6, the bias layer 25 of this embodiment is disposed in the enlarged diameter portion 12. In other words, when the through-holes (recesses) are formed only in the enlarged diameter portion 12, the bias layer 25 only needs to be disposed in the minimum necessary area of ​​the enlarged diameter portion 12. In addition, in such a configuration, it is preferable that the prepreg constituting the bias layer 25 has an axial length (range L) that does not overlap the boundary P1 between the small diameter portion 11 and the enlarged diameter portion 12 or the boundary P2 between the enlarged diameter portion 12 and the large diameter portion 13.

[0039] According to this configuration, the prepreg constituting the bias layer 25 is not wound around the inflection point, so that the rolling operation can be easily performed and the occurrence of wrinkles and the like can be prevented.

[0040] In this embodiment, the inner main body layer 22A is configured by laminating and bonding a prepreg 20a, whose reinforcing fibers are oriented in the axial direction of the grip, and a prepreg 21a, whose reinforcing fibers are oriented in the circumferential direction of the grip. Similarly, the outer main body layer 22B is configured by laminating and bonding a prepreg 20a and a prepreg 21a. A prepreg 24, which is made of a knitted sheet and forms a bias layer 25, is wound around the outer layer side of the main body layers 22A and 22B at the position of the enlarged diameter portion 102.

[0041] In the above-described configuration, the winding position and the number of windings are optional, and it is possible to configure it as shown in FIG. 8, for example. An example of a winding pattern of the prepregs constituting the grip will be described below. For convenience, in Fig. 8, the uppermost position (12 o'clock position) of the core bar 100 is defined as C0, and an example of forming the grip by winding the prepregs described above counterclockwise will be described.

[0042] First, the sheet of overlapping prepregs 20a and 20b is wound starting from position C1, 180° from position C0, and wound approximately 360° to form main layer 22A. In this case, winding end position C2 is overlapped at winding start position C1 with a small overlap (1.12 plies). Next, the sheet of overlapping prepregs 20a and 20b is wound starting from position C0 and wound approximately 360° to form main layer 22B. In this case, winding end position C3 is overlapped at winding start position C0 with a small overlap (1.12 plies). Next, prepreg 24 is wound starting from position C4, 90° from position C0, and wound approximately 360° to form bias layer 25. In this case, winding end position C5 is overlapped at winding start position C4 with a small overlap (1.05 plies).

[0043] In this way, by shifting the winding start position C1 of the main layer 22A and the winding start position C0 of the main layer 22B by 180° in the circumferential direction to ensure an overlap, the rolling operation is easy and the edges of the main layers 22A and 22B do not overlap. This results in a good balance in the circumferential direction without increasing the radial thickness, and makes it possible to ensure stable strength.

[0044] 9 and 10 are diagrams showing a third embodiment of a fishing rod grip according to the present invention, in which FIG. 9 is a diagram explaining the laminated structure of the portion where the bias layer is arranged, and FIG. 10 is a diagram showing the arrangement of the prepregs.

[0045] As described above, when through holes or depressions are formed in the grip 10, cracks and the like are likely to occur in the surface region. For this reason, it is preferable that the bias layers 25 are disposed in the innermost and outermost layers of the grip 10. The bias layers 25 disposed in the innermost and outermost layers are made of a knitted sheet (inclined cross prepreg 24) in which reinforcing fibers are oriented in different inclined directions. In this way, the strength can be further improved by arranging multiple bias layers 25. In particular, the strength can be efficiently improved by arranging sheet-shaped prepregs in the outermost and innermost layers. In this case, as shown in Fig. 5, one layer may be made of the first oblique prepreg 24a and the other layer may be made of the second oblique prepreg 24b.

[0046] Furthermore, although the bias layer 25 in this embodiment is arranged within the range of the enlarged diameter portion 12, it may be arranged over the entire length of the grip. Alternatively, it may be arranged from the enlarged diameter portion 12 to the large diameter portion 13, or it may be arranged within the range of the large diameter portion 13. In other words, by arranging the bias layer only at positions where through holes or recesses are formed, it is possible to efficiently reduce weight and costs.

[0047] 11 to 13 are diagrams showing a fourth embodiment of a fishing rod grip according to the present invention, in which FIG. 11 is a schematic diagram showing the position where the bias layer is arranged, FIG. 12 is a diagram showing the arrangement of the prepregs, and FIG. 13 is a cross-sectional view in a direction perpendicular to the axial direction of the portion where the bias layer is arranged.

[0048] 11, the bias layer 25 of this embodiment is disposed in the large diameter portion 13 (range L2). That is, when the through-hole (recess) is formed only in the large diameter portion 13, the bias layer 25 only needs to be disposed in the large diameter portion 13, which is the minimum necessary range.

[0049] In this embodiment, the inner main body layer 22A is made of prepreg 21a with reinforcing fibers oriented in the circumferential direction of the grip, and an oblique prepreg 24a constituting the bias layer 25 is attached to the inner surface of the large diameter portion side of the main body layer 22A. The middle main body layer 22B is configured by laminating and attaching a prepreg 20a with reinforcing fibers oriented in the axial direction of the grip and a prepreg 21a with reinforcing fibers oriented in the circumferential direction of the grip. Furthermore, the outer main body layer 22C is configured by laminating and attaching a prepreg 20a with reinforcing fibers oriented in the axial direction of the grip and a prepreg 21a with reinforcing fibers oriented in the circumferential direction of the grip, similar to the main body layer 22B. An oblique prepreg 24b constituting the bias layer 25 is attached to the outer surface of the outer main body layer 22C on the large diameter portion side.

[0050] In this case, the oblique direction prepregs 24a, 24b are each made up of a single unidirectional sheet, and the orientation direction of each reinforcing fiber is oriented in a direction oblique to the axial direction, but they may also each be made up of a woven sheet.

[0051] Here, an example of forming a grip by winding each of the above-mentioned prepregs will be described with reference to Fig. 13. In this figure, as in Fig. 8, the uppermost position (12 o'clock position) of the core bar 100 is defined as C0, and an example of forming a grip by winding each of the above-mentioned prepregs counterclockwise will be described.

[0052] First, a sheet made up of overlapping prepreg 21a constituting the main layer 22A and oblique prepreg 24a constituting the bias layer 25 is started to be wound from position C0 and wound approximately 360° to form the inner main layer 22A and bias layer 25. In this case, the winding end position C6 is overlapped at the winding start position C0 with a slight overlap margin secured (1.04 plies).

[0053] Next, the sheet of overlapping prepregs 21a and 20a is wound starting from position C7, 180° from position C0, and wound approximately 360° to form the main layer 22B. In this case, the winding end position C8 is reached at the winding start position C7, with a slight overlap (1.07 ply). Similarly, the sheet of overlapping prepregs 21a and 21b is wound starting from position C0 and wound approximately 360° to form the main layer 22C. In this case, the winding end position C8 is reached at the winding start position C0, with a slight overlap (1.05 ply). Then, the oblique-direction prepreg 24b is wound starting from position C0 and wound approximately 360° to form the bias layer 25, which is the outermost layer. In this case, the winding end position C9 is reached at the winding start position C0, with a slight overlap (1.04 ply).

[0054] The bias layer 25 is disposed in the large diameter portion 13, and the winding start positions of the main layers 22B and 22C are offset by 180° in the circumferential direction, which makes the rolling easier and prevents overlapping of the overlapping portions. This makes it possible to ensure stable strength without increasing the radial thickness.

[0055] FIG. 14 is a diagram showing a fifth embodiment of a fishing rod grip according to the present invention, and is a diagram showing the layered structure of the grip. The main body layer of this embodiment includes a first layer 20D in which reinforcing fibers are oriented in the circumferential direction of the grip, and a second layer 20E in which reinforcing fibers are oriented in the axial direction of the grip.

[0056] The first layer 20D includes a prepreg 21d with reinforcing fibers oriented in the circumferential direction and a tape-shaped inclined prepreg 24d that serves as a bias layer at the position where the through-holes (depressions) are formed, and these prepregs 21d, 24d are wound around the innermost layer of the core bar in an axially continuous state. The first layer 20D is also formed by attaching a prepreg 21 with reinforcing fibers oriented in the axial direction so as to overlap the prepreg 21d and the inclined prepreg 24d.

[0057] The second layer 20E is formed by attaching a prepreg 20, whose reinforcing fibers are oriented in the axial direction, to the prepreg 21 so as to overlap it. The second layer 20E also includes a prepreg 20d, whose reinforcing fibers are oriented in the axial direction, overlapping the prepreg 20, and a tape-shaped inclined prepreg 24d, which serves as a bias layer at the position where the through-hole (depression) is to be formed, and these prepregs 20d, 24d are wound around the innermost layer of the core bar in an axially continuous state. The second layer 20E is also formed by attaching a prepreg 20, whose reinforcing fibers are oriented in the axial direction, to the prepreg 20d and the inclined prepreg 24d so as to overlap it.

[0058] In this configuration, the area in which the bias layer is arranged can be limited by a single tape-shaped inclined prepreg, which allows for efficient reduction in the amount of bias layer used and enables cost reduction.

[0059] 15(a) to 15(f) are diagrams illustrating various variations in the configuration of the through-holes (recesses) formed in the grip, with the left side being a perspective view and the right side being a side view.

[0060] In FIG. 1(a), two circular through holes (recesses) 15 are formed in the axial direction in the enlarged diameter portion and part of the large diameter portion of the grip 10. In FIG. 1(b), a through hole (recess) 15a is formed in a part of the large diameter portion 13 of the grip 10 so as to be elongated and cross. In FIG. 1(c), curved through-holes (recesses) 15b are formed at an angle at regular intervals in a part of the large diameter portion 13 of the grip 10. Figure (d) shows a through hole (depression) 15c formed in part of the enlarged diameter portion 12 and large diameter portion 13 of the grip 10, which extends longitudinally across the enlarged diameter portion and large diameter portion of the grip 10 and has a bent end portion on the large diameter portion side. Figure (e) shows that a through hole (depression) 15d is formed in part of the enlarged diameter portion 12 and large diameter portion 13 of the grip 10, extending longitudinally across the enlarged diameter portion and large diameter portion of the grip 10. FIG. 1(f) shows that a large number of circular through-holes (depressions; dimples) 15e are formed on the surface of the grip 10 in a part of the enlarged diameter portion 12 and the large diameter portion 13 of the grip 10.

[0061] As described above, the shape, position, number, etc., of the through-holes (recesses) formed on the surface of the grip 10 can be modified as appropriate. In this case, the through-holes (recesses) are preferably formed to extend (including the extending portion) along the axial direction, as shown in Figures (b) to (e). This shape allows the fingers to easily hook even when the grip is held with axial misalignment, thereby improving grip performance. Furthermore, the circumferential width of the through-holes (recesses) is preferably 2 mm to 8 mm (approximately 1 / 2 or less of the width of the pad of the little finger when gripping). This width allows the fingers to hook without slipping, and furthermore, effectively prevents a decrease in strength. Furthermore, in the examples shown in Figures (a) to (f), the through-holes (recesses) are provided on one side surface, but they may also be formed at positions 180° apart.

[0062] Figure 16 is a diagram explaining the preferred position of the through-hole (depression) formed in the grip, where (a) is a diagram showing the relationship with the trigger, and (b) is a diagram showing the relationship with the spinning reel attached to the reel seat.

[0063] When a dual-bearing reel is mounted on the reel seat, the trigger 5 is located at a position facing the trigger in the radial direction during use, as shown in Figure (a). When a spinning reel is mounted on the reel seat, the fixed hood 3c is located at the same position as the trigger during use, as shown in Figure (b).

[0064] In such a usage mode, the through holes (recesses) formed in the grip are preferably formed within a range R1 of 45° to 135° or 225° to 315° circumferentially from the center positions of the trigger 5 and fixed hood 3c (0°, which is the 12 o'clock position when viewed from the axial direction, or 180°, which is the 18 o'clock position). Furthermore, when through holes (recesses) are formed at positions 180° apart on the grip 10, they are preferably formed within the ranges R1 of 45° to 135° and 225° to 315°, respectively.

[0065] The above-mentioned range R1 is the so-called side area when the grip is held, and since the pads of the little finger and ring finger are likely to rest on it, forming a through hole (recess) here makes it possible to efficiently increase the grip strength and improve operability.

[0066] Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments and can be modified in various ways. For example, the configuration of each prepreg in the above-described embodiments (e.g., the type of reinforcing fiber or synthetic resin, the orientation direction of the reinforcing fiber, strength, amount of impregnated synthetic resin, basis weight, prepreg thickness, number of windings, etc.) can be modified as appropriate. In this case, it is preferable that the main body layer is aligned in the axial direction so as to facilitate winding at least around the core bar.

[0067] The diameters, lengths, and shapes of the small diameter portion, enlarged diameter portion, and large diameter portion can be modified as needed, and the enlarged diameter portion can be tapered to a different extent or configured with a curved or composite surface. The position of the grip 10 relative to the rod can also be modified as needed. Furthermore, in the region extending from the small diameter portion through the enlarged diameter portion to the large diameter portion, the main layer may be configured with multiple separate sheets rather than a single sheet, to ensure a clean appearance without wrinkles. [Explanation of symbols]

[0068] 1 fishing rod 10 Grip 11 Small diameter section 12 Enlarged diameter section 13 Large diameter section 15, 15a to 15e Through holes (recesses) 100 core wire 101 Small diameter section 102 Enlarged diameter section 103 Large diameter section

Claims

1. A fishing rod equipped with a hollow grip formed by winding a prepreg made of fiber-reinforced resin, A fishing rod characterized in that the grip is provided with a through-hole passing through in the radial direction or a recess recessed in the radial direction from the outer peripheral surface.

2. The prepreg includes at least one main layer in which reinforcing fibers are oriented in the axial direction of the grip and the circumferential direction of the grip, and at least one bias layer in which reinforcing fibers are oriented in a direction inclined with respect to the axial direction of the grip to form a cross state, 2. The fishing rod according to claim 1, wherein the through-hole or the recess is provided in a portion where the bias layer is disposed.

3. 3. The fishing rod according to claim 2, wherein the bias layer comprises a first oblique prepreg in which reinforcing fibers are oriented in a direction oblique to the axial direction of the grip, and a second oblique prepreg in which reinforcing fibers are inclined in a direction different from that of the reinforcing fibers of the first oblique prepreg.

4. 3. The fishing rod according to claim 2, wherein the bias layer is made of an inclined cross prepreg knitted with reinforcing fibers inclined in different directions relative to the axial direction of the grip.

5. 5. The fishing rod according to claim 3, wherein the bias layers are disposed in the innermost and outermost layers of the grip.

6. The main body layer includes a first layer in which reinforcing fibers are oriented in the circumferential direction of the grip, and a second layer in which reinforcing fibers are oriented in the axial direction of the grip, 3. The fishing rod according to claim 2, wherein the first layer or the second layer comprises a tape-shaped inclined prepreg that serves as the bias layer.

7. the grip includes an enlarged diameter portion that gradually enlarges in diameter from a small diameter portion toward a rear end side, and a large diameter portion that extends from the enlarged diameter portion toward the rear end side, 3. The fishing rod according to claim 2, wherein the bias layer is disposed from the enlarged diameter portion to the large diameter portion.

8. the grip includes an enlarged diameter portion that gradually enlarges in diameter from a small diameter portion toward a rear end side, and a large diameter portion that extends from the enlarged diameter portion toward the rear end side, 3. The fishing rod according to claim 2, wherein the bias layer is disposed except for a boundary portion between the enlarged diameter portion and the large diameter portion.

9. the grip includes an enlarged diameter portion that gradually enlarges in diameter from a small diameter portion toward a rear end side, and a large diameter portion that extends from the enlarged diameter portion toward the rear end side, 3. The fishing rod according to claim 2, wherein the bias layer is disposed within the area of ​​the enlarged diameter portion.

10. the grip includes an enlarged diameter portion that gradually enlarges in diameter from a small diameter portion toward a rear end side, and a large diameter portion that extends from the enlarged diameter portion toward the rear end side, 3. The fishing rod according to claim 2, wherein the bias layer is disposed within the large diameter portion.

11. The fishing rod according to claim 1, characterized in that the through hole or recess is formed within a range of 45° to 135° around the circumferential direction relative to a fixed hood that constitutes a trigger or reel seat on which a finger is placed.

12. 2. The fishing rod according to claim 1, wherein the through-hole or recess is formed so as to extend along the axial direction.

Images