Reel seat and reel seat base material

Abstract

The present invention improves the strength of a hood, the strength of a fitting / bonding part, and the strength of a trigger, and reduces the weight of the trigger. A hood (13) of a reel seat (1) comprises: a placement part (13b) on which an inserted mounting leg is placed; an inner wall part (13c) facing the placement part (13b); an outer wall part (13d) positioned on the outer side of the inner wall part (13c); a first curved part (16) provided so as to extend from the placement part (13b) to the inner wall part (13c) on the rear side of the hood (13); and a second curved part (17) provided so as to extend from the inner wall part (13c) to the outer wall part (13d) on an opening part (13a) side of the hood (13). A reinforcing layer (4) is disposed on at least one of the first curved part (16) and the second curved part (17).

Description

Reel sheet and reel sheet base material

[0001] The present invention relates to a reel sheet and a reel sheet base material.

[0002] Conventionally, a reel sheet provided with a hood into which the mounting legs of a reel are inserted is known (see, for example, Patent Document 1). In this reel sheet, a resin sheet containing reinforcing fibers is disposed on the inner wall surface and the mounting surface inside the hood, and the hood is reinforced. On the other hand, a fishing rod disclosed in Patent Document 2 is known as a structure for reinforcing a hood. In this fishing rod, a reinforcing material is disposed in a portion forming the hood, and a prepreg sheet is wound around the reinforcing material to fix the reinforcing material to the rod body.

[0003] Conventionally, a reel sheet provided with a hood into which the mounting legs of a reel are inserted is known (see, for example, Patent Document 1). In this reel sheet, a resin sheet containing reinforcing fibers is disposed on the inner wall surface and the mounting surface inside the hood, and the hood is reinforced. On the other hand, a fishing rod disclosed in Patent Document 2 is known as a structure for reinforcing a hood. In this fishing rod, a reinforcing material is disposed in a portion forming the hood, and a prepreg sheet is wound around the reinforcing material to fix the reinforcing material to the rod body.

[0004] Conventionally, a reel sheet for a fishing rod provided with a trigger for hanging a finger is known (see, for example, Patent Document 3). Generally, a reel sheet is manufactured by injection molding using a synthetic resin material, and tends to be formed with a thick wall overall in order to ensure strength during use. In particular, the trigger protruding from the reel sheet body is often formed with a thick wall from the viewpoints of operability and durability.

[0005] JP-A-2015-123064 JP-A-61-185142 JP-A-2006-345790

[0006] By the way, in recent years, efforts have been made to reduce the weight of reel sheets and fishing rods, and in such efforts, further improvement in the strength of the hood is required.

[0007] Furthermore, in recent years, there has been a growing demand for lighter reel seats and fishing rods, and in the process of addressing this issue, there is a need for further improvements in the strength of the interlocking adhesive joints to which hoods and attached components are bonded.

[0008] Furthermore, increasing the trigger's thickness leads to an increase in product weight and presents the challenge of making it easier for voids to form inside during injection molding. These voids can cause cosmetic defects and reduced strength, compromising the stability of product quality.

[0009] The present invention was created to solve the above problems and aims to provide a reel seat that can improve the strength of the hood into which the reel mounting legs are inserted.

[0010] Furthermore, the present invention was created to solve the above problems, and aims to provide a reel seat and a reel seat base material that can improve the strength of the hood into which the reel mounting legs are inserted and the fitting adhesive part into which the member to be attached is bonded.

[0011] Furthermore, the present invention was created to solve the above problems and aims to provide a reel seat and a reel seat base material that can lighten the trigger and improve its strength.

[0012] To solve the aforementioned problems, the reel seat of the present invention is provided with a concave hood into which the mounting legs of a reel are inserted. The hood comprises a mounting portion on which the inserted mounting legs are placed, an inner wall portion facing the mounting portion, an outer wall portion located outside the inner wall portion, a first curved portion provided on the rear side of the hood extending from the mounting portion to the inner wall portion, and a second curved portion provided on the opening side of the hood extending from the inner wall portion to the outer wall portion. A reinforcing layer is provided on at least one of the first curved portion and the second curved portion.

[0013] In this invention, a reinforcing layer is placed on at least one of the first curved portion, which is the inner corner of the hood, and the second curved portion, which is the opening edge on the opening side of the hood, thereby improving strength. In particular, the first curved portion and the second curved portion are areas that are easily subjected to load when the mounting legs are inserted, so this is effective in improving the strength of the hood.

[0014] Furthermore, it is preferable that the reinforcing layer is provided continuously across both the first and second curved sections, or individually across the first and second curved sections. In the configuration where the layer is provided continuously across both sections, one reinforcing layer can reinforce both the first and second curved sections, thus efficiently forming a reinforcing structure. In the configuration where the layers are provided individually, the reinforcing layer can be formed and arranged to the optimal size and shape for the first and second curved sections, so that the necessary parts can be accurately reinforced. In addition, the load due to external forces is distributed, so durability is improved. Furthermore, for example, when using a prepreg sheet impregnated with synthetic resin as the reinforcing layer, it is possible to arrange the first and second curved sections with different characteristics and number of layers, so that accurate reinforcement can be achieved.

[0015] Furthermore, it is preferable that the reinforcing layer is formed from a prepreg sheet in which reinforcing fibers are impregnated with synthetic resin. This configuration allows for weight reduction while maintaining a predetermined strength.

[0016] The hood preferably comprises an inner layer and an outer layer covering the inner layer, and preferably the reinforcing layer is positioned between the inner layer and the outer layer. In this configuration, the reinforcing layer is held between the inner layer and the outer layer during molding of the hood, so that the reinforcing layer can be accurately positioned relative to the first and second curved portions. Furthermore, since the reinforcing layer is covered by the outer layer, peeling or snagging of the edges of the reinforcing layer can be effectively prevented. In addition, the appearance is improved because the reinforcing layer is not exposed by the outer layer.

[0017] Furthermore, it is preferable that at least a portion of the inner layer is formed from an integrally molded product made of synthetic resin material. In this configuration, since a portion of the inner layer can be replaced with an integrally molded product, the hood can be easily formed.

[0018] Furthermore, it is preferable to place a thickened portion inside the hood. In this case, it is preferable that the thickened portion is made of a synthetic resin material that expands in volume when heated.

[0019] In this configuration, the inner part of the hood can be replaced with a thicker section, making it easy to form the hood. Furthermore, replacing the inner part with a thicker section also reduces the weight of the hood. Additionally, since the thicker section expands in volume when heated, pressure can be applied from the inside of the hood during molding, effectively pressing the hood material against the outer mold. This ensures that the hood material adheres tightly to the outer mold, preventing the formation of voids and other defects. Therefore, moldability is improved. For example, when a hood is formed by laminating prepreg sheets, the expansion of the thicker section effectively prevents voids from forming between the layers of the prepreg sheets.

[0020] To solve the aforementioned problems, the reel seat base material of the present invention has a gripping portion, a reel leg mounting portion on which the reel's mounting legs are placed, and a hood on which the reel's mounting legs are fixed, and is a hollow cylindrical shape formed entirely of a prepreg sheet in which reinforcing fibers are impregnated with synthetic resin. A cylindrical fitting adhesive portion is formed at one or both ends in the axial direction, to which the member to be attached is fitted and bonded. The hood and the fitting adhesive portion are formed to be thicker than the other parts.

[0021] In this invention, a reel seat base material is obtained that is lightweight due to the hollow cylindrical shape made of prepreg sheets, while ensuring strength by forming the hood and fitting adhesive parts, which are subjected to external forces, with sufficient thickness. Furthermore, because it is a hollow cylindrical shape and is formed by laminating prepreg sheets, it is easier to sense the bite transmitted from the rod during actual fishing, and an improvement in fishing results can be expected.

[0022] Furthermore, it is preferable that the reel seat base material includes an inner layer and an outer layer that covers the inner layer. In this configuration, the reel seat base material is constructed by stacking prepreg sheets in layers, making it easy to form parts where weight reduction is desired and parts where strength is to be ensured.

[0023] Furthermore, it is preferable that a reinforcing layer is formed between the inner layer and the outer layer of the hood. This configuration improves the strength of the hood because a reinforcing layer is formed in the hood. In particular, since the hood is a part that is easily subjected to load when the mounting legs are inserted, improving the strength of this part is effective in ensuring the strength of the reel seat base material.

[0024] Furthermore, it is preferable that the fitting adhesive portion has an inner diameter adjustment layer in addition to the inner and outer layers, for adjusting the size of the inner diameter to correspond to the outer diameter of the member to be attached. In this configuration, the inner diameter of the fitting adhesive portion can be set to a size corresponding to the outer diameter of the member to be attached by adjusting the thickness of the inner diameter adjustment layer. This makes it possible to obtain a highly versatile reel seat base material that can be used with various members to be attached.

[0025] Furthermore, it is preferable to place a thickened portion inside the hood. In this case, it is preferable that the thickened portion is made of a synthetic resin material that expands in volume when heated.

[0026] To solve the aforementioned problems, the reel seat base material of the present invention has a gripping portion, a reel leg mounting portion on which the reel's mounting legs are placed, a hood on which the reel's mounting legs are fixed, and a trigger, and is a hollow cylindrical shape formed entirely of a prepreg sheet in which reinforcing fibers are impregnated with synthetic resin. The trigger has a curved portion, and the curved portion is provided with a reinforcing layer to reinforce the trigger.

[0027] In this invention, a reinforcing layer is provided in the curved portion of the trigger, where stress tends to concentrate during use. This directly increases the strength and rigidity of that portion, thereby improving the overall strength of the trigger. This helps to suppress damage caused by localized stress concentration. Furthermore, by providing a reinforcing layer made of prepreg sheet in the curved portion, bending rigidity and fatigue resistance are improved, enhancing structural stability and durability during long-term use. In addition, the trigger can be made lighter, resulting in a lighter overall reel seat base material. This contributes to improved fishing operability and reduced fatigue during prolonged use. It also allows for optimization of grip and sensitivity transmission.

[0028] If the trigger comprises a front layer positioned on the front surface and a rear layer positioned on the rear surface, it is preferable that the reinforcing layer includes side reinforcing layers positioned on the left and right sides of the trigger and connecting the front layer and the rear layer.

[0029] In this configuration, the front layer, rear layer, and the side reinforcing layer connecting them allow for reinforcement from three directions, creating a highly rigid structure for the entire trigger. Therefore, the strength of the trigger can be improved.

[0030] If the trigger comprises a front layer positioned on the front surface of the trigger and a rear layer positioned on the rear surface of the trigger, it is preferable that the reinforcing layer includes a tip reinforcing layer positioned below the tip of the trigger and connecting the front layer and the rear layer.

[0031] In this configuration, the front layer, rear layer, and the tip reinforcement layer connecting them allow for reinforcement from three directions, creating a highly rigid structure for the entire trigger. Therefore, the strength of the trigger can be improved. In particular, the tip reinforcement layer improves the strength and durability of the trigger tip, where load is concentrated during fishing operations, and prevents bending and damage to the reel seat base material. This stabilizes fishing operations. Furthermore, because the tip reinforcement layer improves the strength and durability of the trigger tip, it effectively prevents damage to the trigger tip from contact with the ground, rocks, boat railings, fishing equipment, etc., during fishing operations, when moving between fishing spots, or during transportation.

[0032] If the trigger comprises a front layer disposed on the front portion of the trigger and a rear layer disposed on the rear portion of the trigger, it is preferable that the reinforcing layer includes side reinforcing layers disposed on the left and right sides of the trigger and connecting the front layer and the rear layer, and a tip reinforcing layer disposed below the tip of the trigger and connecting the front layer and the rear layer. Furthermore, it is preferable that at least two of the left and right side reinforcing layers and the tip reinforcing layer are formed from a continuous prepreg sheet, or that the left and right side reinforcing layers and the tip reinforcing layer are formed from separate prepreg sheets.

[0033] In a configuration where at least two of the left and right side reinforcement layers and the tip reinforcement layer are formed from continuous prepreg sheets, the structural continuity between the reinforcement layers due to the continuous prepreg sheets improves the integrity and rigidity of the reinforcement material, thereby improving durability. In a configuration where the left and right side reinforcement layers and the tip reinforcement layer are formed from separate prepreg sheets, each reinforcement layer can be designed and selected individually, allowing for the selection of the optimal material and shape according to the part, thus increasing design options.

[0034] The trigger comprises an inner layer and an outer layer covering the inner layer, and the reinforcing layer is preferably formed between the inner layer and the outer layer.

[0035] In this configuration, the reinforcing layer is held between the inner and outer layers during trigger molding, allowing for precise placement of the reinforcing layer on curved sections. Furthermore, since the reinforcing layer is covered by the outer layer, peeling or snagging of the edges of the reinforcing layer can be effectively prevented. Additionally, the appearance is improved because the reinforcing layer is not exposed by the outer layer.

[0036] The trigger comprises an inner layer and an outer layer covering the inner layer, and preferably at least a portion of the inner layer is formed from an integrally molded product of a synthetic resin material.

[0037] In this configuration, a portion of the inner layer can be replaced with a single molded part, making it easy to form the trigger.

[0038] A thickened portion is provided inside the trigger, and it is preferable that the thickened portion is made of a synthetic resin material that expands in volume when heated.

[0039] In this configuration, the inner part of the trigger can be replaced with a thickened section, making it easy to form the trigger. Furthermore, the weight of the trigger can be reduced by replacing the thickened section with a synthetic resin material. Additionally, since the thickened section expands in volume when heated, pressure can be applied from the inside of the trigger during molding, effectively pressing the trigger material against the outer mold. This ensures that the trigger material adheres closely to the outer mold, effectively preventing voids from forming between layers of the prepreg sheet due to the pressure exerted by the expansion of the thickened section. Therefore, moldability is improved.

[0040] According to the reel seat of the present invention, it is possible to improve the strength of the hood into which the mounting legs of the reel are inserted.

[0041] Furthermore, the reel seat and reel seat base material of the present invention make it possible to improve the strength of the fitting adhesive portion to which the hood into which the reel mounting legs are inserted and the member to be attached are bonded.

[0042] The reel seat and reel seat base material of the present invention make it possible to reduce the weight and improve the strength of the trigger.

[0043] This is a perspective view showing a fishing rod to which a reel seat according to the first embodiment of the present invention is applied. This is a side view showing a reel seat according to the first embodiment. This is a cross-sectional view of the reel seat. This is a diagram showing a reel seat base material, where (a) is a cross-sectional view and (b) is a cross-sectional view showing a screw member attached to the reel seat base material. This is an enlarged cross-sectional view of the fixed hood. This is a diagram showing the layer structure of the reel seat base material, where (a) is a schematic enlarged cross-sectional view showing a part of the layer structure of the reel seat base material, (b) is a schematic enlarged cross-sectional view showing a part of the layer structure of the fixed hood, and (c) is a schematic enlarged cross-sectional view showing a part of the layer structure of the fitting adhesive part. This is a schematic diagram showing the relationship between the reel seat base material and the prepreg sheet. This is a schematic enlarged cross-sectional view showing an outline of the layer structure in the fixed hood. This is a schematic enlarged cross-sectional view showing a first modified example according to the first embodiment of the layer structure in the fixed hood. This is a schematic enlarged cross-sectional view showing a second modified example according to the first embodiment of the layer structure in the fixed hood. This is a schematic enlarged cross-sectional view showing an outline of the arrangement structure of the thick portion in the fixed hood of the reel seat according to the second embodiment of the present invention. This is a schematic enlarged cross-sectional view showing a first modified example according to the second embodiment of the arrangement structure of the thick portion. This is a schematic enlarged cross-sectional view showing a second modified example according to the second embodiment of the arrangement structure of the thickened portion. This is a schematic enlarged cross-sectional view showing a third modified example according to the second embodiment of the arrangement structure of the thickened portion. This is a schematic enlarged cross-sectional view showing a fourth modified example according to the second embodiment of the arrangement structure of the thickened portion. This is a perspective view showing a fishing rod to which the reel seat according to the third embodiment of the present invention is applied. This is a side view showing the reel seat according to the third embodiment. This is a cross-sectional view of the reel seat. This is a diagram showing the reel seat base material, where (a) is a cross-sectional view and (b) is a cross-sectional view showing the state in which a screw member is attached to the reel seat base material. This is an enlarged cross-sectional view of the fixed hood. This is a diagram showing the layer structure of the reel seat base material, where (a) is a schematic enlarged cross-sectional view showing the layer structure of a part of the reel seat base material, (b) is a schematic enlarged cross-sectional view showing the layer structure of a part of the fixed hood, and (c) is a schematic enlarged cross-sectional view showing the layer structure of a part of the fitting adhesive part. This is a schematic diagram showing the relationship between the reel seat base material and the prepreg sheet. This is a schematic enlarged cross-sectional view showing the outline of the layer structure in the fixed hood.This is a schematic enlarged cross-sectional view showing a first modified example according to the third embodiment of the layer structure in the fixed hood. This is a schematic enlarged cross-sectional view showing a second modified example according to the third embodiment of the layer structure in the fixed hood. This is a schematic enlarged cross-sectional view showing the outline of the arrangement structure of the thickened portion in the fixed hood of the reel seat according to the fourth embodiment of the present invention. This is a schematic enlarged cross-sectional view showing a first modified example according to the fourth embodiment of the arrangement structure of the thickened portion. This is a schematic enlarged cross-sectional view showing a second modified example according to the fourth embodiment of the arrangement structure of the thickened portion. This is a schematic enlarged cross-sectional view showing a third modified example according to the fourth embodiment of the arrangement structure of the thickened portion. This is a schematic enlarged cross-sectional view showing a fourth modified example according to the fourth embodiment of the arrangement structure of the thickened portion. This is a perspective view showing a fishing rod to which a reel seat equipped with a reel seat base material according to the fifth embodiment of the present invention is applied. This is a side view showing the reel seat. This is a cross-sectional view of the reel seat. This is a schematic cross-sectional view showing the outline of the layer structure in the reel seat base material. This is a schematic cross-sectional view showing the outline of the layer structure along XXXVA-XXXVA in Figure 32. This is a schematic cross-sectional view showing the outline of the layer structure along XXXVB-XXXVB in Figure 32. This is a schematic cross-sectional view showing the general structure of the layer along XXXVC-XXXVC in Figure 32. This is a schematic diagram showing the relationship between the side reinforcement layer, the first side coating layer, and the second side coating layer in the reel seat substrate. This is a schematic diagram showing the relationship between the front upper coating layer and the rear upper coating layer in the reel seat substrate. This is a schematic diagram showing the relationship between the tip reinforcement layer, the lower coating reinforcement layer, the front lower coating layer, and the rear lower coating layer in the reel seat substrate. This is a schematic enlarged cross-sectional view showing a modified example of the layer structure of the trigger portion in the reel seat substrate. This is a schematic enlarged cross-sectional view showing the layer structure of the trigger portion of the reel seat substrate according to the sixth embodiment of the present invention. This is a schematic enlarged cross-sectional view showing a modified example of the layer structure of the trigger.

[0044] Hereinafter, the reel sheet and the reel sheet base material according to the first and second embodiments will be described in detail while referring to the drawings. In the following description, when referring to "front and rear", "left and right", and "up and down", the directions shown in FIG. 1 are used as the reference. Note that the reel sheet according to the embodiment exemplifies a reel sheet for a fishing spinning reel (hereinafter simply referred to as "reel"), but is not intended to limit the form of the reel. Also, in the description of the drawings, the same reference numerals are given to the same elements, and duplicate descriptions will be omitted as appropriate.

[0045] (First Embodiment) As shown in FIG. 1, the reel sheet 1 of the present embodiment is a member for fixing a reel (not shown) to a fishing rod R, and a mounting leg portion (not shown, the same hereinafter) of the reel is mounted. The fishing rod R includes a cylindrical rod body R1, a rear grip G, and the like. The rod body R1 is configured by connecting a middle rod, a tip rod, etc., although not shown. Note that the rod body R1 can be joined by a telescopic method, a butt-joint method, a reverse butt-joint method, an inro method, or any other known arbitrary joining method. The rod body R1 may be composed of a single rod body. The reel sheet 1 includes a reel sheet base material 10, a screw member 20 (see FIGS. 3 and 4(b)), and a movable hood 30 (see FIGS. 2 and 3), as shown in FIGS. 2 to 4.

[0046] The reel sheet base material 10 is a portion to be gripped by the fingers of an angler, and as shown in FIGS. 3 and 4(a)(b), it is formed in a hollow cylindrical shape. The reel sheet base material 10 is entirely formed of a prepreg sheet in which reinforcing fibers are impregnated with a synthetic resin. A detailed description of the prepreg sheet will be given later. The reel sheet base material 10 includes a gripping portion 11 forming an outer shell, a reel leg mounting portion 12 on which the mounting legs of the reel are placed, a fixing hood 13 as a hood into which the front end portion of the mounting legs of the reel is inserted and fixed, and front and rear fitting and bonding portions 14, 15. As shown in FIG. 3, a rod body R1 is inserted through the hollow portion inside the reel sheet base material 10. A front spacer 41 is bonded to the front fitting and bonding portion 14. A screw member 20 is bonded to the rear fitting and bonding portion 15. And a rear spacer 42 is bonded inside the screw member 20. The reel sheet base material 10 is adhesively fixed to the rod body R1 via the front and rear spacers 41, 42.

[0047] As shown in FIG. 3, the gripping portion 11 includes a bulging portion 11a that bulges upward in a curved shape. The bulging portion 11a bulges on the side opposite to the radial direction with respect to the side where the reel leg mounting portion 12 is formed. Thereby, the volume in the upper region of the hollow portion of the reel sheet base material 10 with the rod body R1 as a boundary is larger than the volume in the lower region. The reel leg mounting portion 12 extends in the front-rear direction and has a flat surface (see FIGS. 2 and 3) in a cross-sectional view on which at least a part of the mounting legs of the reel is placed.

[0048] As shown in FIG. 5, the fixing hood 13 has a concave shape, and an opening 13a into which the front end portion of the mounting legs of the reel is inserted opens rearward. The fixing hood 13 is integrally formed with the reel sheet base material 10 by a prepreg sheet described later. The fixing hood 13 is formed to be thicker than other portions of the reel sheet base material 10, for example, the gripping portion 11, the reel leg mounting portion 12, and the fitting and bonding portions 14, 15.

[0049] The fixed hood 13 comprises a mounting portion 13b, an inner wall portion 13c, and an outer wall portion 13d. The mounting portion 13b is formed continuously with the front end of the reel leg mounting portion 12 (see Figure 4(a)) and has a flat surface in cross-section on which the front end of the reel's mounting leg portion is mounted. The inner wall portion 13c is provided opposite to the mounting portion 13b and has an inclined surface that clamps the front end of the reel's mounting leg portion between itself and the mounting portion 13b. The inner wall portion 13c is inclined downward toward the opening 13a. The outer wall portion 13d is located outside the inner wall portion 13c and forms part of the outer surface of the fixed hood 13. The outer wall portion 13d is inclined upward toward the front.

[0050] A first curved portion 16 is formed between the mounting portion 13b and the inner wall portion 13c. The first curved portion 16 has a curved concave shape and is the part that connects the mounting portion 13b and the inner wall portion 13c. The first curved portion 16 forms the inner corner of the recess of the fixed hood 13. On the other hand, a second curved portion 17 is formed between the inner wall portion 13c and the outer wall portion 13d. The second curved portion 17 has a curved protrusion shape and is the part that connects the inner wall portion 13c and the outer wall portion 13d. The second curved portion 17 forms the opening edge of the opening 13a of the fixed hood 13. The first curved portion 16 and the second curved portion 17 only need to be curved as a whole, and may include flat portions.

[0051] As shown in Figures 4(a) and 4(b), the front and rear fitting and bonding portions 14 and 15 are formed at both axial ends of the reel seat base material 10 and have a cylindrical shape. The fitting and bonding portions 14 and 15 are the parts to which the spacers 41 and 42 and the screw member 20, which are to be attached, are fitted and bonded, and are integrally formed with the reel seat base material 10 by a prepreg sheet, which will be described later. The fitting and bonding portions 14 and 15 are formed to be thicker than other parts of the reel seat base material 10, such as the gripping portion 11 and the reel leg mounting portion 12. Alternatively, the rod body R1 may be directly bonded to the front fitting and bonding portion 14.

[0052] As shown in Figure 3, the rod body R1 is fitted and bonded to the front fitting and bonding portion 14 via a front spacer 41. The inner circumferential surface of the fitting and bonding portion 14 is formed to have the same inner diameter along the axial direction. The front spacer 41 extends forward of the tip of the fitting and bonding portion 14, preventing the tip of the fitting and bonding portion 14 from directly contacting the outer circumferential surface of the rod body R1. This prevents stress concentration from occurring when the rod body R1 is bent due to contact between the fitting and bonding portion 14 and the rod body R1.

[0053] The front spacer 41 functions as a buffer between the fitting adhesive portion 14 and the rod body R1, and is made of a material more flexible than the rod body R1, such as ABS resin with a low modulus of elasticity. This reduces the difference in rigidity between the rod body R1 and the fitting adhesive portion 14, thereby reducing the load on the rod body R1 and improving the rod body R1's resistance to bending load. The tip of the front spacer 41 is covered by a cover member 43.

[0054] A screw member 20 is fitted and bonded to the rear fitting and bonding portion 15. The inner circumferential surface of the fitting and bonding portion 15 is formed to have the same inner diameter along the axial direction. The inner circumferential surface of the fitting and bonding portion 15 is formed to have a larger diameter than the inner circumferential surface of the front fitting and bonding portion 14. The front end of the fitting and bonding portion 15 is continuous with the gently curved portion at the rear end of the gripping portion 11.

[0055] The screw member 20 has an insertion portion 21 that is fitted and bonded to the fitting and bonding portion 15, and a threaded portion 22 formed on the outer circumferential surface of its rear end. The insertion portion 21 is the part that is bonded to the inner circumferential surface of the fitting and bonding portion 15 via adhesive, and has an outer diameter corresponding to the inner diameter of the inner circumferential surface of the fitting and bonding portion 15, and a length corresponding to the axial length of the fitting and bonding portion 15. The outer circumferential surface of the insertion portion 21 has the same outer diameter along the axial direction. The movable hood 30 is screwed into the threaded portion 22.

[0056] As shown in Figure 3, the rod body R1 is fitted and bonded to the screw member 20 via the rear spacer 42. The front end 42a of the rear spacer 42 extends forward of the front end 21a of the insertion portion 21. As a result, a circumferential stepped space 45 is formed between the outer circumferential surface of the front end 42a of the rear spacer 42 and the front end 20a of the insertion portion 21.

[0057] The movable hood 30 is a component that is screwed onto the threaded portion 22 of the screw member 20, and is provided to be movable in the axial direction in order to clamp the mounting leg portion of the reel. The movable hood 30 includes a rear end mounting portion (not shown) on which the rear end portion of the mounting leg portion of the reel is placed.

[0058] Next, the prepreg sheets constituting the reel seat base material 10 will be described with reference to Figures 6 and 7. Figure 6 shows the layer structure of the reel seat base material, where (a) is a schematic enlarged cross-sectional view showing a part of the layer structure of the reel seat base material, (b) is a schematic enlarged cross-sectional view showing a part of the layer structure of the fixed hood, and (c) is a schematic enlarged cross-sectional view showing a part of the layer structure of the fitting adhesive part. Figure 7 is a schematic diagram showing the relationship between the reel seat base material and the prepreg sheets.

[0059] A prepreg sheet is a fiber-reinforced resin prepreg in which reinforcing fibers are impregnated with a resin such as a matrix resin. Examples of reinforcing fibers that can be included in the prepreg sheet include carbon fibers, glass fibers, and any other known reinforcing fibers. Examples of resins that can be included in the prepreg sheet include thermosetting resins such as epoxy resins and thermoplastic resins such as PET. Examples of thermosetting resins include urea resin, melamine resin, phenolic resin, epoxy resin, unsaturated polyester resin, alkyd resin, and urethane resin.

[0060] The reel sheet base material 10 is formed by internal pressure molding, in which multiple prepreg sheets are layered on an outline (not shown) and pressure is applied from the radially inner side. As shown in Figure 6(a), the reel sheet base material 10 has a basic layer structure consisting of an inner layer 2 and an outer layer 3 that covers the inner layer 2. The inner layer 2 and the outer layer 3 are each composed of multiple layers S. Each layer S of the inner layer 2 and the outer layer 3 is configured to form a single cylindrical layer in the circumferential direction by arranging at least two laminated sheets, each formed by stacking multiple prepreg sheets radially, in the circumferential direction. In other words, each layer S of the inner layer 2 and the outer layer 3 is formed in a cylindrical shape by connecting multiple laminated sheets in the circumferential direction. In Figure 7, the prepreg sheets constituting each layer S of the inner layer 2 are denoted by reference numeral 2a, and the prepreg sheets constituting each layer S of the outer layer 3 are denoted by reference numeral 3a. In Figure 7, prepreg sheets 2a and 3a are schematically shown one by one. The prepreg sheets 2a and 3a have a total length that corresponds to at least the axial size of the reel sheet base material 10.

[0061] In the inner layer 2 and outer layer 3, at least some of the prepreg sheets 2a and 3a use reinforcing fibers with different fiber directions. The prepreg sheets 2a and 3a of each layer S may have the same fiber direction or different fiber directions for the reinforcing fibers. The fiber direction of the prepreg sheets 2a and 3a can be, for example, oriented at 0 degrees, 90 degrees, or in a grid pattern (plain weave or twill weave) of 0 degrees and 90 degrees relative to the circumferential direction of the reel sheet base material 10, or even oriented obliquely to the circumferential direction. In this case, the oblique direction of the fiber direction is preferably in the range of 20 to 70 degrees relative to the circumferential direction, and more preferably ±45 degrees relative to the circumferential direction. By changing the fiber direction pattern, the rigidity and strength of each layer S can be freely changed.

[0062] Here, the prepreg sheet with obliquely oriented reinforcing fibers has the property that the reinforcing fibers tend to spread (stretch) radially outward during internal pressure molding, so it can flexibly conform (deform) to the shape of the hollow cylindrical reel sheet base material 10 which has multiple curved surfaces. Therefore, by using a prepreg sheet with obliquely oriented reinforcing fibers, the advantage of stabilizing the molding quality of the reel sheet base material 10 can be obtained. Note that each layer S of the inner layer 2 and outer layer 3 is not limited to being formed by stacking multiple prepreg sheets 2a and 3a, but may be composed of a single prepreg sheet 2a or 3a. Also, the number of layers S of the inner layer 2 and outer layer 3 can be set arbitrarily.

[0063] Next, the layer structure of the fixed hood 13 will be described with reference to Figures 6(b) and 8. Figure 8 is a schematic enlarged cross-sectional view showing the outline of the layer structure in the fixed hood. As shown in Figures 6(b) and 8, the fixed hood 13 comprises an inner layer 2, an outer layer 3, and a reinforcing layer 4. The fixed hood 13 is a part that is integrally formed during the molding process of the reel sheet base material 10. The configuration of each layer S of the inner layer 2 and outer layer 3 in the fixed hood 13 is the same as the configuration described above. The fixed hood 13 also includes a thickened portion 2A that is formed to be continuous with the inner layer 2. The thickened portion 2A is formed by stacking multiple layers of prepreg sheets (not shown). As described above, the fiber direction of the prepreg sheets in the thickened portion 2A can be in various directions.

[0064] The reinforcing layer 4 is positioned between the inner layer 2 and the outer layer 3, and as shown in Figure 8, it is continuously positioned from the mounting portion 13b to the first curved portion 16, the inner wall portion 13c, the second curved portion 17, and the outer wall portion 13d. The reinforcing layer 4 covers both the first curved portion 16 and the second curved portion 17 simultaneously. In this embodiment, the reinforcing layer 4 covers the first curved portion 16 and the second curved portion 17 not only from the vertical direction but also from the horizontal direction. The number of layers S1 of the reinforcing layer 4 can be set arbitrarily.

[0065] As shown in Figure 6(b), the reinforcing layer 4 is composed of multiple layers S1. Each layer S1 of the reinforcing layer 4 is formed by stacking multiple prepreg sheets radially. The prepreg sheets of the reinforcing layer 4 are made of reinforcing fibers that are oblique to the circumferential direction of the fixed hood 13 (reel sheet base material 10). In this case, the fiber direction is preferably in the range of 20 to 70 degrees with respect to the circumferential direction, and more preferably ±45 degrees with respect to the circumferential direction. In Figure 7, each prepreg sheet constituting each layer S1 of the reinforcing layer 4 is denoted by reference numeral 4a. In Figure 7, one prepreg sheet 4a is schematically shown.

[0066] As shown in Figure 8, the reinforcing layer 4 is configured such that the end positioned on the mounting portion 13b side extends onto the mounting portion 13b, and the end positioned on the outer wall portion 13d side extends onto the outer wall portion 13d. This ensures that the reinforcing layer 4 is reliably positioned (reliably covers) the curved surfaces of the first curved portion 16 and the second curved portion 17.

[0067] Next, the layer structure of the mating adhesive portions 14 and 15 will be described with reference to Figure 6(c). Since the layer structure of the mating adhesive portions 14 and 15 is substantially the same, the layer structure of the rear mating adhesive portion 15 will be used as an example for explanation. As shown in Figure 6(c), the mating adhesive portion 15 comprises an inner layer 2, an outer layer 3, and an inner diameter adjustment layer 5. The mating adhesive portion 15 is a part that is integrally formed during the molding process of the reel seat base material 10. The configuration of the inner layer 2 and outer layer 3 in the mating adhesive portion 15 is the same as the configuration described above.

[0068] As shown in Figure 6(c), the inner diameter adjustment layer 5 is positioned between the inner layer 2 and the outer layer 3. The inner diameter adjustment layer 5 is formed by a plurality of layers S2. Each layer S2 of the inner diameter adjustment layer 5 is formed by stacking multiple prepreg sheets radially. As shown in Figure 7, the prepreg sheets of the inner diameter adjustment layer 5 have a total length corresponding to the circumference of one full turn of the fitting adhesive portion 15. In Figure 7, the prepreg sheets constituting each layer S2 of the front and rear inner diameter adjustment layers 5, 5 are denoted by reference numerals 5a, 5a. In Figure 7, the front and rear prepreg sheets 5a, 5a are schematically shown as one sheet each. The number of layers S2 of the inner diameter adjustment layer 5 can be set arbitrarily.

[0069] The prepreg sheets 5a of each layer S2 of the inner diameter adjustment layer 5 are oriented so that the fiber direction is oblique to the circumferential direction. Preferably, the oblique fiber direction is in the range of 20 to 70 degrees relative to the circumferential direction, and more preferably, it is in the range of ±45 degrees relative to the circumferential direction. By using such prepreg sheets 5a for each layer S2 of the inner diameter adjustment layer 5, the fibers tend to spread (stretch) radially outward during internal pressure molding, so that sufficient molding pressure can be obtained to press against the outer mold (not shown). In this case, the prepreg sheets 5a may be those with a predetermined thickness and whose fiber direction is pre-oriented in a plain weave or twill weave, and which are used so that the fiber direction is oblique to the circumferential direction in the range of 20 to 70 degrees. By using such prepreg sheets 5a, it is possible to form layers of any thickness without using sheets with multiple orientation patterns, thus simplifying the lamination work during internal pressure molding. In addition, since partial overlap of the fiber direction orientation does not occur, it is possible to ensure uniform physical properties.

[0070] Furthermore, the end of the inner diameter adjustment layer 5 is covered by the inner layer 2, as shown in Figure 6(c). This helps to mitigate the steps caused by lamination. In addition, since the molding pressure during internal pressure molding acts on the inner diameter adjustment layer 5 and the outer layer 3 via the inner layer 2, it is easier to obtain molded layers of stable quality.

[0071] Next, a method for molding the reel seat base material 10 according to this embodiment will be described. For molding, an internal pressure bag (internal mold) that can apply internal pressure, such as that of a tube, is prepared. Then, a prepreg sheet 2a constituting the layer S of the inner layer 2 is placed around this internal pressure bag, and prepreg sheets 4a, 5a, 5a constituting the layers S1, S2 of the reinforcing layer 4 and the inner diameter adjustment layer 5 are placed on top of that. Then, a prepreg sheet 3a constituting the layer S of the outer layer 3 is placed on top of the inner layer 2, the reinforcing layer 4 and the inner diameter adjustment layer 5.

[0072] Subsequently, the internal pressure bag, made up of stacked prepreg sheets 2a to 5a, is placed inside the outer mold, and the outer mold is clamped with a press machine. Then, internal pressure is applied to the internal pressure bag by heating it with air, liquid, or a heat-expanding powder to form it. After forming, the internal pressure bag is removed to complete the hollow cylindrical reel sheet base material 10.

[0073] As described above, the reel seat 1 of this embodiment has reinforcing layers 4 on both the first curved portion 16, which is the inner corner of the fixed hood 13, and the second curved portion 17, which is the opening edge on the opening 13a side of the fixed hood 13, thus improving strength. In particular, the first curved portion 16 and the second curved portion 17 are parts that are easily subjected to load when inserting the mounting legs, so this is effective in improving the strength of the fixed hood 13. Furthermore, since the reinforcing layer 4 is placed only in the parts of the fixed hood 13 that require reinforcement, the entire reinforced portion does not become large in diameter, as in the configuration in which prepreg is wrapped around to fix the reinforcing material (see Patent Document 2). Therefore, a reel seat 1 that fits easily to the fingers and has excellent fishing operability can be obtained. In addition, since the reel seat base material 10 is hollow cylindrical and formed by laminating prepreg sheets, it is easy to sense the bite transmitted from the rod body R1 during actual fishing, and an improvement in fishing results can be expected.

[0074] Furthermore, since both the first and second curved sections can be reinforced with a single reinforcing layer 4, the reinforcing structure can be formed efficiently.

[0075] Furthermore, since the reinforcing layer 4 is formed from a prepreg sheet 4a, it is possible to reduce weight while maintaining a predetermined strength.

[0076] Furthermore, since the reinforcing layer 4 is held between the inner layer 2 and the outer layer 3 during the molding of the fixed hood 13, the reinforcing layer 4 can be accurately positioned relative to the first curved portion 16 and the second curved portion 17. In addition, since the reinforcing layer 4 is covered by the outer layer 3, peeling or snagging of the edges of the reinforcing layer 4 can be effectively prevented. Moreover, since the reinforcing layer 4 is not exposed by the outer layer 3, the appearance is improved.

[0077] Furthermore, since the inner layer 2 and outer layer 3 of the fixed hood 13 are also formed from prepreg sheets 2a and 3a, it is possible to reduce weight while maintaining the required strength.

[0078] Furthermore, since the prepreg sheet 4a of the reinforcing layer 4 is formed of reinforcing fibers oriented obliquely to the circumferential direction of the fixed hood 13, the prepreg sheet 4a stretches flexibly during the molding of the fixed hood 13, making it easier to conform to the shape of the corners of the recesses and the opening edges of the fixed hood 13, thereby improving moldability.

[0079] Furthermore, since the inner layer 2, outer layer 3, and reinforcing layer 4 are formed from multiple prepreg sheets 2a to 4a with different fiber directions, it is possible to further improve strength while reducing weight. In other words, because the entire reel seat base material 10 is made entirely of reinforced fiber resin, it is lightweight and highly strong.

[0080] Furthermore, since the prepreg sheet 4a of the reinforcing layer 4 is formed of reinforcing fibers oriented obliquely to the circumferential direction of the fixed hood 13, it is easily stretchable during internal pressure molding and can be easily adapted to the shape of the corners and opening edges of the fixed hood 13. Therefore, the moldability of the reel seat base material 10 is improved.

[0081] Figure 9 is a schematic enlarged cross-sectional view showing a first modified example of the layer structure in a fixed hood. In this first modified example, reinforcing layers 4 are individually arranged for the first curved portion 16 and the second curved portion 17. The reinforcing layer 4 of the first curved portion 16 is arranged to cover the first curved portion 16 from the vertical and horizontal directions. The reinforcing layer 4 of the second curved portion 17 is also arranged to cover the second curved portion 17 from the vertical and horizontal directions.

[0082] In the first curved section 16, one end of the reinforcing layer 4 is located at the straight portion of the front end of the mounting section 13b. The other end of the reinforcing layer 4 is located at the straight portion of the front end of the inner wall section 13c. In other words, the reinforcing layer 4 in the first curved section 16 is provided to extend across the adjacent mounting section 13b and inner wall section 13c. On the other hand, in the second curved section 17, one end of the reinforcing layer 4 is located at the straight portion of the rear end of the inner wall section 13c. The other end of the reinforcing layer 4 is located at the approximately straight portion of the rear end of the outer wall section 13d. In other words, the reinforcing layer 4 in the second curved section is provided to extend across the adjacent inner wall section 13c and outer wall section 13d. Note that the size and number of layers S1 (see Figure 6(b)) of the reinforcing layer 4 can be arbitrarily set for the first curved section 16 and the second curved section 17.

[0083] According to this first modified reel sheet 1, the reinforcing layer 4 can be formed and arranged in the optimal size and shape for the first curved section 16 and the second curved section 17, so that the necessary parts can be precisely reinforced. In addition, the load due to external forces is distributed, so durability is improved. Furthermore, it is possible to change the prepreg sheet characteristics and the number of layers for the first curved section 16 and the second curved section 17, so that precise reinforcement can be achieved.

[0084] Furthermore, both ends of the reinforcing layer 4 extend to the portions adjacent to the first curved portion 16 and the second curved portion 17, respectively. This allows the first curved portion 16 and the second curved portion 17 to be suitably covered with the reinforcing layer 4. In addition, the reinforcing layer 4 can be easily positioned during molding, and changes in rigidity at both ends of the reinforcing layer 4 are less likely to occur.

[0085] Figure 10 is a schematic enlarged cross-sectional view showing a second modified example of the layer structure in a fixed hood. In this second modified example, the thickened portion 2A, which is part of the inner layer 2, is formed by an integrally molded product 2B made of synthetic resin material. The integrally molded product 2B is sized to be positioned over a relatively wide area of ​​the thickened portion 2A and is integrated with the prepreg sheet 2a (see Figure 7) that constitutes the inner layer 2.

[0086] According to this second modified reel seat 1, a portion of the inner layer 2 can be replaced with an integrally molded product 2B, which simplifies the formation of the fixed hood 13 and, consequently, the reel seat base material 10.

[0087] (Second Embodiment) Next, the reel seat fixing hood of the second embodiment will be described with reference to Figures 11 to 15. Figure 11 is a schematic enlarged cross-sectional view showing the general arrangement structure of the thick portion in the reel seat fixing hood according to the second embodiment. The difference between this embodiment and the first embodiment is that a thick portion 2C made of a synthetic resin material that expands in volume when heated is arranged inside the fixing hood 13. The arrangement structure shown in Figure 11 shows a state in which the thick portion 2C in a primary foamed state (a state that has not fully foamed) is arranged inside the inner layer 2. Since the thick portion 2C has the property of expanding in volume when heated, it is acceptable for there to be a small gap S11 between the outer surface of the thick portion 2C and the inner surface of the inner layer 2 when it is arranged.

[0088] The thickened portion 2C contains thermally expandable microcapsules and is a molded product in a primary foamed state as described above. The thickened portion 2C can be made using thermally expandable microcapsules alone, a compound material containing thermally expandable microcapsules, or a foaming agent. Alternatively, the thickened portion 2C may be constructed by laminating a synthetic resin sheet (synthetic resin material) containing thermally expandable microcapsules. Examples of thermally expandable microcapsules include thermally expandable thermoplastic microcapsules and those containing an external coating of aminoplast resin such as melamine or urea / formaldehyde resin. The thickened portion 2C formed from such materials has a lower specific gravity (lower density) compared to that of the first embodiment.

[0089] On the other hand, the thickened portion 2C may be composed of a foaming agent. Any known foaming agent that expands when heated during molding can be used. The thickened portion 2C may be formed of a synthetic resin material that expands in volume when heated, and materials that do not contain a foaming agent, such as shape memory polymers and gas storage polymers, can be used.

[0090] Thermally expandable microcapsules can be of various types, including those with low to medium temperature expansion ranges and those with medium to high temperature expansion ranges. For example, those with low to medium temperature expansion ranges have an expansion initiation temperature of approximately 80 to 100°C and a maximum expansion temperature of approximately 120 to 140°C. For example, those with medium to high temperature expansion ranges have an expansion initiation temperature of approximately 120 to 130°C and a maximum expansion temperature of approximately 170 to 200°C. Here, the primary foaming state is the state in which the material is heated above the expansion initiation temperature but below the maximum expansion temperature. The secondary foaming state is the state in which the material is heated to near the maximum expansion temperature.

[0091] Next, a molding method for the area around the fixing hood 13 of the reel seat base material 10 according to this embodiment will be described. In this embodiment as well, an internal pressure bag (internal mold) that can apply internal pressure, such as that of a tube, is prepared for molding. Then, a thick-walled portion 2C formed in a primary foam state from a synthetic resin material containing thermally expandable microcapsules is placed at a predetermined position in this internal pressure bag. After that, prepreg sheets constituting the inner layer 2, reinforcing layer 4, and outer layer 3 are stacked, similar to the first embodiment.

[0092] Subsequently, the internal pressure bag, which consists of the thickened section 2C and the prepreg sheet stacked together, is placed inside the outer mold, and the outer mold is clamped with a press machine. Then, while heating to near the temperature at which the expansion of the thickened section 2C is maximum, internal pressure is applied to the internal pressure bag using air, liquid, or thermally expanding powder, and the product is molded. After molding, the internal pressure bag is removed, completing a hollow cylindrical reel seat base material 10 in which the expanded thickened section 2C is in close contact with the prepreg sheet inside the fixed hood 13.

[0093] As described above, the reel seat 1 of this embodiment allows the inner portion of the fixed hood 13 to be replaced with the thickened portion 2C, making it easy to form the fixed hood 13. Furthermore, the weight of the fixed hood 13 can be reduced by replacing it with the thickened portion 2C. In addition, since the thickened portion 2C has the property of expanding in volume when heated, pressure can be applied from the inside of the fixed hood 13 during molding, allowing the prepreg sheet of the fixed hood 13 to be suitably pressed against the outer mold, etc. This ensures that the prepreg sheet adheres closely to the outer mold, etc., preventing the formation of voids between the layers of the prepreg sheet. Therefore, moldability is improved. In particular, since the pressing force due to the expansion of the thickened portion 2C can be applied to the first curved portion 16 and the second curved portion 17, where internal pressure is difficult to apply during molding, the shape and strength of the fixed hood 13 are stabilized, and a reel seat 1 with the desired quality can be obtained.

[0094] Furthermore, the volume of the thickened portion 2C expands appropriately due to the action of the thermally expandable microcapsules and foaming agent, so that the prepreg sheet of the fixed hood 13 adheres more closely to the outer mold, etc., and the occurrence of voids can be more effectively prevented. In addition, according to the reel sheet 1 of this embodiment, the prepreg sheet ensures sufficient strength for the fixed hood 13 while reducing weight by the arrangement of the thickened portion 2C.

[0095] Figure 12 is a schematic enlarged cross-sectional view showing a first modified example of the arrangement structure of the thickened portion. In this first modified example, the thickened portion 2D is surrounded by an inner layer 2 and an outer layer 3 (reinforcement layer 4). The thickened portion 2D is integrally formed from a synthetic resin material containing thermally expandable microcapsules, as described above, and is a molded product in a primary foamed state. The thickened portion 2D is shorter in the front-to-back direction than the thickened portion 2C, resulting in weight reduction.

[0096] When forming the fixing hood 13 of the reel seat base material 10 according to the first modified example, for example, a prepreg sheet constituting the inner layer 2 is placed on an internal pressure bag (internal mold) that can be subjected to internal pressure such as a tube, and the thickened portion 2D is placed on top of it. After that, the reinforcing layer 4 and the prepreg sheets constituting the outer layer 3 are stacked in sequence.

[0097] In this first modified example, the same effects and advantages as described above can be obtained. Furthermore, since the radially inner portion of the thickened portion 2D is covered by the inner layer 2, the thickened portion 2D can be suitably protected by the inner layer 2. This prevents unexpected damage to the thickened portion 2D.

[0098] Figure 13 is a schematic enlarged cross-sectional view showing a second modified example of the arrangement structure of the thickened portion. In this second modified example, in a structure in which the thickened portion 2E is surrounded by the inner layer 2 and the outer layer 3 (reinforcement layer 4), the dimension of the thickened portion 2E in the front-to-back direction is formed to be even shorter than that of the thickened portion 2D in the first modified example. The thickened portion 2E is integrally formed from a synthetic resin material containing thermally expandable microcapsules, as described above, and is a molded product in a primary foamed state.

[0099] In this second modified example, the same effects and advantages as in the first modified example can be obtained. Furthermore, since the front-to-back dimension of the thickened portion 2E is even shorter than in the second modified example, further weight reduction can be achieved.

[0100] Figure 14 is a schematic enlarged cross-sectional view showing a third modified example of the arrangement structure of the thickened portion. In this third modified example, the thickened portion 2F is arranged over substantially the entire fixed hood 13, and the inner layer 2 extends forward to cover the radially inner portion of the thickened portion 2F. The thickened portion 2F is integrally formed from a synthetic resin material containing thermally expandable microcapsules, as described above, and is a molded product in a primary foamed state.

[0101] In this third modified example, the same effects and advantages as in the first modified example can be obtained. Furthermore, since the thickened portion 2F is arranged over almost the entire surface of the fixed hood 13, it is possible to reduce weight while improving moldability and strength over almost the entire surface of the fixed hood 13.

[0102] Figure 15 is a schematic enlarged cross-sectional view showing a fourth modified example of the arrangement structure of the thickened portion. In this fourth modified example, the thickened portion 2F is arranged over substantially the entire surface of the fixed hood 13, and the outer surface of the thickened portion 2F is covered with the inner layer 2. The same effects and advantages as in the first modified example can be obtained in this fourth modified example as well. Furthermore, during molding, the prepreg sheets constituting the inner layer 2, reinforcing layer 4, and outer layer 3 can be layered on top of the thickened portion 2F, making the molding process easy.

[0103] Although embodiments have been described above, the present invention is not limited to the examples shown in the embodiments. For example, in the above embodiments, the reinforcing layer 4 is provided on both the first curved portion 16 and the second curved portion 17, but the invention is not limited to this, and may be provided on only one of them. In this case as well, the strength of the fixed hood 13 can be improved.

[0104] Furthermore, although the reel sheet base material 10 is exemplified as being constructed by laminating prepreg sheets 2a to 5a, it is not limited to this, and may also be constructed by laminating SMC (Sheet Molding Compound) sheets, nonwoven fabric sheets, etc. In this case as well, the same effects and advantages as those described in the embodiment can be obtained.

[0105] Furthermore, although the embodiment shows a fixed hood 13 with a reinforcing layer 4, the invention is not limited to this, and the reinforcing layer 4 may also be provided to the movable hood 30. In this case, the movable hood 30 has an inner layer 2 and an outer layer 3 made of prepreg sheets 2a and 3a, similar to the fixed hood 13, and the reinforcing layer 4 is placed between the inner layer 2 and the outer layer 3. In this case as well, the same effects and advantages as in the embodiment can be obtained.

[0106] Furthermore, while we have described the fiber orientation of the reinforcing fibers as being oriented at 0 degrees, 90 degrees, or in a grid pattern of 0 degrees and 90 degrees (plain weave or twill weave), or even obliquely to the circumferential direction, we are not limited to these, and the fiber orientation may also be at an angle with respect to the axial direction of the reel seat base material 10.

[0107] Furthermore, the mating and bonding portions 14 and 15 are equipped with inner diameter adjustment layers 5 and 5, and are formed to be thicker than other parts, so it is possible to adjust the inner diameter by cutting or other processes after molding to correspond to the outer diameter of the member to be attached. In this case, the inner circumferential surfaces of the mating and bonding portions 14 and 15 are formed to the same inner diameter, resulting in good machining accuracy.

[0108] Furthermore, although a structure in which a spacer 41 is bonded to the fitting adhesive portion 14 and a screw member 20 is bonded to the fitting adhesive portion 15 has been shown, the structure is not limited to this, and a structure in which the rod body R1 or other members to be attached are bonded to the fitting adhesive portions 14 and 15 may also be used.

[0109] Furthermore, while the second embodiment shows a structure in which the thickened portion 2C and the like are integrally formed from a synthetic resin material that expands in volume when heated, the invention is not limited to this, and multiple components formed individually from similar synthetic resin materials may be combined to form the structure.

[0110] Next, the reel seat and reel seat base material according to the third and fourth embodiments will be described in detail with reference to the drawings. In the following description, when referring to "front and back," "left and right," and "up and down," the directions shown in Figure 16 will be used as the reference. Note that the reel seat according to the embodiments is an example of a reel seat for a spinning reel for fishing (hereinafter simply referred to as "reel"), but it is not intended to limit the form of the reel. Also, in the description of the drawings, the same elements are denoted by the same reference numerals, and redundant explanations will be omitted as appropriate.

[0111] (Third Embodiment) As shown in Figure 16, the reel seat 101 equipped with the reel seat base material 110 of this embodiment is a member for fixing a reel (not shown) to a fishing rod 100R, and the mounting legs of the reel (not shown, the same applies hereinafter) are attached to it. The fishing rod 100R is equipped with a cylindrical rod body 100R1, a rear grip 100G, etc. The rod body 100R1 is constructed by connecting a middle section, a tip section, etc., although not shown. The rod body 100R1 can be connected by a telescopic method, a parallel joint method, a reverse parallel joint method, a spigot method, or any other known joint method. The rod body 100R1 may be composed of a single rod body. As shown in Figures 17 to 19, the reel seat 101 is equipped with a reel seat base material 110, a screw member 120 (see Figures 18 and 19(b)), and a movable hood 130 (see Figures 17 and 18).

[0112] The reel seat base material 110 is the part that is gripped by the angler's fingers and is formed in a hollow cylindrical shape as shown in Figures 18 and 19(a) and (b). The entire reel seat base material 110 is formed from a prepreg sheet in which reinforcing fibers are impregnated with synthetic resin. A detailed explanation of the prepreg sheet will be given later. The reel seat base material 110 comprises a gripping portion 111 that forms the outer shell, a reel leg mounting portion 112 on which the reel's mounting legs are placed, a fixing hood 113 which serves as a hood into which the front end of the reel's mounting legs are inserted and fixed, and front and rear fitting adhesive portions 114 and 115. As shown in Figure 18, the rod body 100R1 is inserted through the hollow part inside the reel seat base material 110. The front spacer 141 is bonded to the front fitting adhesive portion 114. The screw member 120 is bonded to the rear fitting adhesive portion 115. The rear spacer 142 is then bonded to the inside of the screw member 120. The reel seat base material 110 is bonded and fixed to the rod body 100R1 via the front and rear spacers 141 and 142.

[0113] As shown in Figure 18, the gripping portion 111 has a bulging portion 111a that curves upward. The bulging portion 111a bulges radially away from the side on which the reel leg mounting portion 112 is formed. As a result, the volume in the upper region of the hollow portion of the reel seat base material 110 is larger than the volume in the lower region, with the rod body 100R1 as the boundary. The reel leg mounting portion 112 extends in the front-rear direction and has a flat surface in cross-section (see Figures 17 and 18) on which at least a portion of the reel's mounting legs are placed.

[0114] As shown in Figure 20, the fixed hood 113 has a concave shape, and the opening 113a into which the front end of the reel mounting leg is inserted opens towards the rear. The fixed hood 113 is integrally formed with the reel seat base material 110 from a prepreg sheet, which will be described later. The fixed hood 113 is formed to be thicker than other parts of the reel seat base material 110, such as the gripping portion 111, the reel leg mounting portion 112, and the fitting adhesive portions 114, 115.

[0115] The fixed hood 113 comprises a mounting portion 113b, an inner wall portion 113c, and an outer wall portion 113d. The mounting portion 113b is formed continuously with the front end of the reel leg mounting portion 112 (see Figure 19(a)) and has a flat surface in cross-section on which the front end of the reel's mounting leg portion is mounted. The inner wall portion 113c is provided opposite to the mounting portion 113b and has an inclined surface that clamps the front end of the reel's mounting leg portion between itself and the mounting portion 113b. The inner wall portion 113c is inclined downward toward the opening 113a. The outer wall portion 113d is located outside the inner wall portion 113c and forms part of the outer surface of the fixed hood 113. The outer wall portion 113d is inclined upward toward the front.

[0116] A first curved portion 116 is formed between the mounting portion 113b and the inner wall portion 113c. The first curved portion 116 has a curved concave shape and is the part that connects the mounting portion 113b and the inner wall portion 113c. The first curved portion 116 forms the inner corner of the recess of the fixed hood 113. On the other hand, a second curved portion 117 is formed between the inner wall portion 113c and the outer wall portion 113d. The second curved portion 117 has a curved protrusion shape and is the part that connects the inner wall portion 113c and the outer wall portion 113d. The second curved portion 117 forms the opening edge of the opening 113a of the fixed hood 113. The first curved portion 116 and the second curved portion 117 only need to be curved as a whole, and may include flat portions.

[0117] The front and rear fitting and bonding portions 114 and 115 are formed at both axial ends of the reel seat base material 110, as shown in Figures 19(a) and (b), and are cylindrical in shape. The fitting and bonding portions 114 and 115 are the parts to which the spacer 141 and screw member 120, which are to be attached, are fitted and bonded, and are integrally formed with the reel seat base material 110 by a prepreg sheet, which will be described later. The fitting and bonding portions 114 and 115 are formed to be thicker than other parts of the reel seat base material 110, such as the grip portion 111 and the reel leg mounting portion 112. Alternatively, the rod body 100R1 may be directly bonded to the front fitting and bonding portion 114.

[0118] As shown in Figure 18, the rod body 100R1 is fitted and bonded to the front fitting and bonding portion 114 via the front spacer 141. The inner circumferential surface of the fitting and bonding portion 114 is formed to have the same inner diameter along the axial direction. The front spacer 141 extends forward of the tip of the fitting and bonding portion 114, preventing the tip of the fitting and bonding portion 114 from directly contacting the outer circumferential surface of the rod body 100R1. This prevents stress concentration from occurring when the rod body 100R1 is bent due to contact between the fitting and bonding portion 114 and the rod body 100R1.

[0119] The front spacer 141 functions as a buffer between the fitting adhesive portion 114 and the rod body 100R1, and is made of a material that is more flexible than the rod body 100R1, such as ABS resin with a low modulus of elasticity. This reduces the difference in rigidity between the rod body 100R1 and the fitting adhesive portion 114, thereby reducing the load on the rod body 100R1 and improving the rod body 100R1's resistance to bending load. The tip of the front spacer 141 is covered by a cover member 143.

[0120] A screw member 120 is fitted and bonded to the rear fitting and bonding portion 115. The inner circumferential surface of the fitting and bonding portion 115 is formed to have the same inner diameter along the axial direction. The inner circumferential surface of the fitting and bonding portion 115 is formed to have a larger diameter than the inner circumferential surface of the front fitting and bonding portion 114. The front end of the fitting and bonding portion 115 is continuous with the gently curved portion at the rear end of the gripping portion 111.

[0121] The screw member 120 has an insertion portion 121 that is fitted and bonded to the fitting and bonding portion 115, and a threaded portion 122 formed on the outer circumferential surface of the rear portion. The insertion portion 121 is the part that is bonded to the inner circumferential surface of the fitting and bonding portion 115 via adhesive, and has an outer diameter corresponding to the inner diameter of the inner circumferential surface of the fitting and bonding portion 115, and a length corresponding to the axial length of the fitting and bonding portion 115. The outer circumferential surface of the insertion portion 121 has the same outer diameter along the axial direction. The movable hood 130 is screwed into the threaded portion 122.

[0122] As shown in Figure 18, the rod body 100R1 is fitted and bonded to the screw member 120 via the rear spacer 142. The front end 142a of the rear spacer 142 extends forward of the front end 121a of the insertion portion 121. As a result, a circumferential stepped space 145 is formed between the outer circumferential surface of the front end 142a of the rear spacer 142 and the front end 120a of the insertion portion 121.

[0123] The movable hood 130 is a component that is screwed onto the threaded portion 122 of the screw member 120, and is provided to be movable in the axial direction in order to clamp the mounting leg of the reel. The movable hood 130 includes a rear end mounting portion (not shown) on which the rear end of the mounting leg of the reel is placed.

[0124] Next, the prepreg sheets constituting the reel seat base material 110 will be described with reference to Figures 21 and 22. Figure 21 is a diagram showing the layer structure of the reel seat base material, where (a) is a schematic enlarged cross-sectional view showing a part of the layer structure of the reel seat base material, (b) is a schematic enlarged cross-sectional view showing a part of the layer structure of the fixed hood, and (c) is a schematic enlarged cross-sectional view showing a part of the layer structure of the fitting adhesive part. Figure 22 is a schematic diagram showing the relationship between the reel seat base material and the prepreg sheets.

[0125] A prepreg sheet is a fiber-reinforced resin prepreg in which reinforcing fibers are impregnated with a resin such as a matrix resin. Examples of reinforcing fibers that can be included in the prepreg sheet include carbon fibers, glass fibers, and any other known reinforcing fibers. Examples of resins that can be included in the prepreg sheet include thermosetting resins such as epoxy resins and thermoplastic resins such as PET. Examples of thermosetting resins include urea resin, melamine resin, phenolic resin, epoxy resin, unsaturated polyester resin, alkyd resin, and urethane resin.

[0126] The reel sheet base material 110 is formed by internal pressure molding, in which multiple prepreg sheets are stacked on an unshown profile and pressure is applied from the radially inner side. As shown in Figure 21(a), the reel sheet base material 110 has a basic layer structure consisting of an inner layer 102 and an outer layer 103 that covers the inner layer 102. The inner layer 102 and the outer layer 103 are each composed of multiple layers 100S. Each layer 100S of the inner layer 102 and the outer layer 103 is configured to form a single cylindrical layer in the circumferential direction by arranging at least two laminated sheets, each formed by stacking multiple prepreg sheets radially, in the circumferential direction. In other words, each layer 100S of the inner layer 102 and the outer layer 103 is formed into a cylindrical shape by connecting multiple laminated sheets in the circumferential direction. In Figure 22, the prepreg sheets constituting each layer 100S of the inner layer 102 are denoted by reference numeral 102a, and the prepreg sheets constituting each layer 100S of the outer layer 103 are denoted by reference numeral 103a. In Figure 22, one prepreg sheet each is schematically shown. The prepreg sheets 102a and 103a have a total length that corresponds to at least the axial size of the reel sheet base material 110.

[0127] In the inner layer 102 and the outer layer 103, at least some of the prepreg sheets 102a and 103a use reinforcing fibers with different fiber directions. The prepreg sheets 102a and 103a of each layer 100S may have reinforcing fibers in the same direction or in different directions. The fiber direction of the prepreg sheets 102a and 103a can be, for example, oriented at 0 degrees, 90 degrees, or in a grid pattern (plain weave or twill weave) of 0 degrees and 90 degrees relative to the circumferential direction of the reel sheet base material 110, or even oriented obliquely to the circumferential direction. In this case, the oblique direction of the fiber direction is preferably in the range of 20 to 70 degrees relative to the circumferential direction, and more preferably ±45 degrees relative to the circumferential direction. By changing the fiber direction pattern, the rigidity and strength of each layer 100S can be freely changed.

[0128] Here, the prepreg sheet with obliquely oriented reinforcing fibers has the property that the reinforcing fibers tend to spread (stretch) radially outward during internal pressure molding, so it can flexibly follow (deform) to conform to the shape of the hollow cylindrical reel sheet base material 110 which has multiple curved surfaces. Therefore, by using a prepreg sheet with obliquely oriented reinforcing fibers, the advantage of stabilizing the molding quality of the reel sheet base material 110 can be obtained. Note that each layer S of the inner layer 102 and outer layer 103 is not limited to being formed by stacking multiple prepreg sheets 102a and 103a, but may be composed of one prepreg sheet 102a or 103a. Also, the number of layers 100S of the inner layer 102 and outer layer 103 can be set arbitrarily.

[0129] Next, the layer structure of the fixed hood 113 will be described with reference to Figures 21(b) and 23. Figure 23 is a schematic enlarged cross-sectional view showing the general outline of the layer structure in the fixed hood. As shown in Figures 21(b) and 23, the fixed hood 113 comprises an inner layer 102, an outer layer 103, and a reinforcing layer 104. The fixed hood 113 is a part that is integrally formed during the molding process of the reel sheet base material 110. The configuration of each layer 100S of the inner layer 102 and the outer layer 103 in the fixed hood 113 is the same as the configuration described above. The fixed hood 113 also includes a thickened portion 102A that is formed to be continuous with the inner layer 102. The thickened portion 102A is formed by stacking multiple layers of prepreg sheets (not shown). As described above, the fiber direction of the prepreg sheets in the thickened portion 102A can be in various directions.

[0130] The reinforcing layer 104 is positioned between the inner layer 102 and the outer layer 103, and as shown in Figure 23, it is continuously positioned from the mounting portion 113b to the first curved portion 116, the inner wall portion 113c, the second curved portion 117, and the outer wall portion 113d. The reinforcing layer 104 simultaneously covers both the first curved portion 116 and the second curved portion 117. In this embodiment, the reinforcing layer 104 covers the first curved portion 116 and the second curved portion 117 not only from the vertical direction but also from the horizontal direction. The number of layers 100S1 of the reinforcing layer 104 can be set arbitrarily.

[0131] As shown in Figure 21(b), the reinforcing layer 104 is composed of multiple layers 100S1. Each layer 100S1 of the reinforcing layer 104 is formed by stacking multiple prepreg sheets radially. The prepreg sheets of the reinforcing layer 104 are made of reinforcing fibers that are oblique to the circumferential direction of the fixed hood 113 (reel sheet base material 110). In this case, the fiber direction is preferably in the range of 20 to 70 degrees with respect to the circumferential direction, and more preferably ±45 degrees with respect to the circumferential direction. In Figure 22, the prepreg sheets constituting each layer 100S1 of the reinforcing layer 104 are denoted by reference numeral 104a. In Figure 22, one prepreg sheet 104a is schematically shown. In this way, since the reinforcing layer 104 is placed only in the parts of the fixed hood 113 that require reinforcement, the entire reinforced portion is not formed to be large in diameter, as in the configuration in which the reinforcing material is fixed by winding prepreg (see Patent Document 2). Therefore, a reel seat 101 is obtained that fits easily to the fingers and offers excellent fishing operability.

[0132] As shown in Figure 23, the reinforcing layer 104 is configured such that the end positioned on the mounting portion 113b side extends onto the mounting portion 113b, and the end positioned on the outer wall portion 113d side extends onto the outer wall portion 113d. This ensures that the reinforcing layer 104 is reliably positioned (reliably covers) the curved surfaces of the first curved portion 116 and the second curved portion 117.

[0133] Next, the layer structure of the mating adhesive portions 114 and 115 will be described with reference to Figure 21(c). Since the layer structure of the mating adhesive portions 114 and 115 is substantially the same, the layer structure of the rear mating adhesive portion 115 will be used as an example for explanation. As shown in Figure 21(c), the mating adhesive portion 115 comprises an inner layer 102, an outer layer 103, and an inner diameter adjustment layer 105. The mating adhesive portion 115 is a part that is integrally formed during the molding process of the reel seat base material 110. The configuration of the inner layer 102 and the outer layer 103 in the mating adhesive portion 115 is the same as the configuration described above.

[0134] As shown in Figure 21(c), the inner diameter adjustment layer 105 is positioned between the inner layer 102 and the outer layer 103. The inner diameter adjustment layer 105 is formed from multiple layers 100S2. Each layer 100S2 of the inner diameter adjustment layer 105 is formed by stacking multiple prepreg sheets radially. As shown in Figure 22, the prepreg sheets of the inner diameter adjustment layer 105 have a total length corresponding to the circumference of one full turn of the fitting adhesive portion 115. In Figure 22, the prepreg sheets constituting each layer 100S2 of the front and rear inner diameter adjustment layers 105, 105a are denoted by reference numerals 105a, 105a. In Figure 22, the front and rear prepreg sheets 105a, 105a are schematically shown as one sheet each. The number of layers 100S2 of the inner diameter adjustment layer 105 can be set arbitrarily.

[0135] The prepreg sheets 105a of each layer 100S2 of the inner diameter adjustment layer 105 are oriented so that the fiber direction is oblique to the circumferential direction. Preferably, the oblique fiber direction is in the range of 20 to 70 degrees from the circumferential direction, and more preferably, it is in the range of ±45 degrees from the circumferential direction. By using such prepreg sheets 105a for each layer 100S2 of the inner diameter adjustment layer 105, the fibers tend to spread (stretch) radially outward during internal pressure molding, so that sufficient molding pressure can be obtained to press against the outer mold (not shown). In this case, the prepreg sheets 105a may be those with a predetermined thickness whose fiber direction is pre-oriented in a plain weave or twill weave, and which are used so that the fiber direction is oblique to the circumferential direction in the range of 20 to 70 degrees. By using such prepreg sheets 105a, it is possible to form layers of any thickness without using sheets with multiple orientation patterns, thus simplifying the lamination work during internal pressure molding. Furthermore, because partial overlapping of the fiber orientation is eliminated, it becomes possible to ensure uniform physical properties.

[0136] Furthermore, as shown in Figure 21(c), the end of the inner diameter adjustment layer 105 is covered with the inner layer 102. This helps to mitigate the steps caused by lamination. Also, since the molding pressure during internal pressure molding acts on the inner diameter adjustment layer 105 and the outer layer 103 via the inner layer 102, it is easier to obtain a molded layer of stable quality.

[0137] Next, a method for molding the reel seat base material 110 according to this embodiment will be described. For molding, an internal pressure bag (internal mold) that can be subjected to internal pressure such as that of a tube is prepared. Then, a prepreg sheet 102a constituting the inner layer 102 layer 100S is placed around this internal pressure bag, and prepreg sheets 104a, 105a, and 105a constituting the reinforcing layer 104 and the inner diameter adjustment layer 105 layers 100S1 and 100S2 are placed on top of that. Then, a prepreg sheet 103a constituting the outer layer 103 layer 100S is placed on top of the inner layer 102, reinforcing layer 104, and inner diameter adjustment layer 105.

[0138] Subsequently, the internal pressure bag, made up of stacked prepreg sheets 102a to 105a, is placed inside the outer mold, and the outer mold is clamped with a press machine. Then, internal pressure is applied to the internal pressure bag by heating it with air, liquid, or a heat-expanding powder to form it. After forming, the internal pressure bag is removed to complete the hollow cylindrical reel seat base material 110.

[0139] As described above, the reel seat base material 110 of this embodiment allows for weight reduction through its hollow cylindrical shape using prepreg sheets 102a to 105a, while ensuring strength by forming the fixed hood 113 and fitting adhesive parts 114 and 115, which are the parts subjected to external forces, with sufficient thickness. Furthermore, because the reel seat base material 110 is hollow cylindrical and formed by laminating prepreg sheets 102a to 105a, it is easier to sense the bite transmitted from the rod body 100R1 during actual fishing, and an improvement in fishing results can be expected.

[0140] Furthermore, the reel seat base material 110 is composed of an inner layer 102 and an outer layer 103, and the reel seat base material 110 is constructed by stacking prepreg sheets 102a to 105a in layers, so that parts where weight reduction is desired and parts where strength is desired can be easily formed.

[0141] Furthermore, since a reinforcing layer 104 is formed on the fixed hood 113, the strength of the fixed hood 113 can be improved. In particular, the fixed hood 113 is a part that is easily subjected to load when the mounting legs are inserted, so improving the strength of this part is effective in ensuring the strength of the reel seat base material 110.

[0142] Furthermore, by adjusting the thickness of the inner diameter adjustment layer 105, the inner diameter of the fitting and bonding portions 114 and 115 can be set to a size corresponding to the outer diameter of the mounting member (spacer 141, screw member 120). This makes it possible to obtain a highly versatile reel seat base material 110 that can accommodate various mounting members.

[0143] Furthermore, since the inner circumferential surfaces of the fitting and bonding portions 114 and 115 are straight with the same inner diameter, it is easier to adjust the size of the inner diameter to correspond to the outer diameter of the mounting member (spacer 141, screw member 120), and the accuracy of the adjustment is also improved.

[0144] Furthermore, since the gripping portion 111 is equipped with a bulging portion 111a, a reel seat base material 110 that is easy to grip and conforms to the angler's fingers is obtained. In addition, since the reel leg mounting portion 112 is relatively closer to the rod body 100R1, the distance between the reel and the rod body 100R1 is shortened, improving fishing operability.

[0145] Furthermore, the reel seat 101 of this embodiment achieves both lightness and strength. The reduced weight also improves fishing operability. Additionally, it makes it easier to sense fish bites transmitted from the attached component during actual fishing, which can lead to improved catch rates.

[0146] Furthermore, the fishing rod 100R of this embodiment achieves both lightness and strength. The reduced weight also improves fishing operability. Additionally, it makes it easier to sense fish bites transmitted from the rod body 100R1 during actual fishing, leading to improved catch rates.

[0147] Figure 24 is a schematic enlarged cross-sectional view showing a first modified example according to a third embodiment of the layer structure in a fixed hood. In this first modified example, reinforcing layers 104 are individually arranged for the first curved portion 116 and the second curved portion 117. The reinforcing layer 104 of the first curved portion 116 is arranged to cover the first curved portion 116 from the vertical and horizontal directions. The reinforcing layer 104 of the second curved portion 117 is also arranged to cover the second curved portion 117 from the vertical and horizontal directions.

[0148] In the first curved section 116, one end of the reinforcing layer 104 is located at the straight portion of the front end of the mounting section 113b. Also, in the first curved section 116, the other end of the reinforcing layer 104 is located at the straight portion of the front end of the inner wall section 113c. In other words, the reinforcing layer 104 in the first curved section 116 is provided to extend across the adjacent mounting section 113b and inner wall section 113c. On the other hand, in the second curved section 117, one end of the reinforcing layer 104 is located at the straight portion of the rear end of the inner wall section 113c. Also, in the second curved section 117, the other end of the reinforcing layer 104 is located at the approximately straight portion of the rear end of the outer wall section 113d. In other words, the reinforcing layer 104 in the second curved section is provided to extend across the adjacent inner wall section 113c and outer wall section 113d. Furthermore, the size and number of layers 100S1 (see Figure 21(b)) of the reinforcing layer 104 can be arbitrarily set for the first curved section 116 and the second curved section 117.

[0149] According to this first modified reel sheet 101, the reinforcing layer 104 can be formed and arranged in an optimal size and shape for the first curved section 116 and the second curved section 117, so that the necessary parts can be precisely reinforced. In addition, the load due to external forces is distributed, so durability is improved. Furthermore, it is possible to change the prepreg sheet characteristics and the number of layers for the first curved section 116 and the second curved section 117, so that precise reinforcement can be achieved.

[0150] Furthermore, both ends of the reinforcing layer 104 extend to the portions adjacent to the first curved portion 116 and the second curved portion 117, respectively. This allows the first curved portion 116 and the second curved portion 117 to be suitably covered with the reinforcing layer 104. In addition, the reinforcing layer 104 can be easily positioned during molding, and changes in rigidity at both ends of the reinforcing layer 104 are less likely to occur.

[0151] Figure 25 is a schematic enlarged cross-sectional view showing a second modified example according to the third embodiment of the layer structure in a fixed hood. In this second modified example, the thickened portion 102A, which is part of the inner layer 102, is formed by an integrally molded product 102B made of synthetic resin material. The integrally molded product 102B is sized to be positioned over a relatively wide area of ​​the thickened portion 102A and is integrated with the prepreg sheet 102a (see Figure 22) that constitutes the inner layer 102.

[0152] According to this second modified reel seat 101, a portion of the inner layer 102 can be replaced with an integrally molded product 102B, which simplifies the formation of the fixed hood 113 and, consequently, the reel seat base material 110.

[0153] (Fourth Embodiment) Next, the reel seat fixing hood of the fourth embodiment will be described with reference to Figures 26 to 30. Figure 26 is a schematic enlarged cross-sectional view showing the general arrangement structure of the thick portion in the reel seat fixing hood according to the fourth embodiment. The difference between this embodiment and the third embodiment is that a thick portion 102C made of a synthetic resin material that expands in volume when heated is arranged inside the fixing hood 113. The arrangement structure shown in Figure 26 shows a state in which the thick portion 102C in a primary foamed state (a state that has not fully foamed) is arranged inside the inner layer 102. Since the thick portion 102C has the property of expanding in volume when heated, it is acceptable for there to be a small gap 100S11 between the outer surface of the thick portion 102C and the inner surface of the inner layer 102 when it is arranged.

[0154] The thickened portion 102C contains thermally expandable microcapsules and is a molded product in a primary foamed state as described above. The thickened portion 102C can be made using thermally expandable microcapsules alone, a compound material containing thermally expandable microcapsules, or a foaming agent. Alternatively, the thickened portion 102C may be constructed by laminating a synthetic resin sheet (synthetic resin material) containing thermally expandable microcapsules. Examples of thermally expandable microcapsules include thermally expandable thermoplastic microcapsules and those containing an external coating of aminoplast resin such as melamine or urea / formaldehyde resin. The thickened portion 102C formed from such materials has a lower specific gravity (lower density) compared to that of the third embodiment.

[0155] On the other hand, the thickened portion 102C may be composed of a foaming agent. Any known foaming agent that has the property of foaming when heated during molding can be used. The thickened portion 102C may be formed of a synthetic resin material that has the property of expanding in volume when heated, and materials that do not contain a foaming agent, such as shape memory polymers and gas storage polymers, can be used.

[0156] Thermally expandable microcapsules can be of various types, including those with low to medium temperature expansion ranges and those with medium to high temperature expansion ranges. For example, those with low to medium temperature expansion ranges have an expansion initiation temperature of approximately 80 to 100°C and a maximum expansion temperature of approximately 120 to 140°C. For example, those with medium to high temperature expansion ranges have an expansion initiation temperature of approximately 120 to 130°C and a maximum expansion temperature of approximately 170 to 200°C. Here, the primary foaming state is the state in which the material is heated above the expansion initiation temperature but below the maximum expansion temperature. The secondary foaming state is the state in which the material is heated to near the maximum expansion temperature.

[0157] Next, a molding method for the area around the fixed hood 113 of the reel seat base material 110 according to this embodiment will be described. In this embodiment as well, an internal pressure bag (internal mold) that can be subjected to internal pressure, such as that of a tube, is prepared for molding. Then, a thick-walled portion 102C formed in a primary foam state from a synthetic resin material containing thermally expandable microcapsules is placed at a predetermined position in this internal pressure bag. After that, prepreg sheets constituting the inner layer 102, reinforcing layer 104, and outer layer 103 are stacked, similar to the third embodiment.

[0158] Subsequently, the internal pressure bag, which consists of the thickened section 102C and the prepreg sheet stacked together, is placed inside the outer mold, and the outer mold is clamped with a press machine. Then, while heating to near the temperature at which the expansion of the thickened section 102C is maximum, internal pressure is applied to the internal pressure bag using air, liquid, or a heat-expanding powder, and the product is molded. After molding, the internal pressure bag is removed, completing a hollow cylindrical reel seat base material 110 in which the expanded thickened section 102C is in close contact with the prepreg sheet inside the fixed hood 113.

[0159] As described above, the reel seat 101 of this embodiment allows the inner portion of the fixed hood 113 to be replaced with the thickened portion 102C, making it easy to form the fixed hood 113. Furthermore, by replacing it with the thickened portion 102C, the weight of the fixed hood 113 can be reduced. In addition, since the thickened portion 102C has the property of expanding in volume when heated, pressure can be applied from the inside of the fixed hood 113 during molding, allowing the prepreg sheet of the fixed hood 113 to be suitably pressed against the outer mold, etc. This ensures that the prepreg sheet adheres closely to the outer mold, etc., preventing the formation of voids between the layers of the prepreg sheet. Therefore, moldability is improved. In particular, since the pressing force due to the expansion of the thickened portion 102C can be applied to the first curved portion 116 and the second curved portion 117, where internal pressure is difficult to apply during molding, the shape and strength of the fixed hood 113 are stabilized, and a reel seat 101 with the desired quality can be obtained.

[0160] Furthermore, the volume of the thickened portion 102C expands appropriately due to the action of the thermally expandable microcapsules and foaming agent, so that the prepreg sheet of the fixed hood 113 adheres more closely to the outer mold, etc., and the occurrence of voids can be more effectively prevented. In addition, according to the reel sheet 101 of this embodiment, the prepreg sheet ensures sufficient strength for the fixed hood 113 while reducing weight by arranging the thickened portion 102C.

[0161] Figure 27 is a schematic enlarged cross-sectional view showing a first modified example according to the fourth embodiment of the arrangement structure of the thickened portion. In this first modified example, the thickened portion 102D is surrounded by an inner layer 102 and an outer layer 103 (reinforcement layer 104). The thickened portion 102D is integrally formed from a synthetic resin material containing thermally expandable microcapsules, as described above, and is a molded product in a primary foamed state. The thickened portion 102D is shorter in the front-to-back direction than the thickened portion 102C, resulting in weight reduction.

[0162] When forming the fixing hood 113 of the reel seat base material 110 according to the first modified example, for example, a prepreg sheet constituting the inner layer 102 is placed on an internal pressure bag (internal mold) that can be subjected to internal pressure such as a tube, and the thickened portion 102D is placed on top of it. After that, the prepreg sheets constituting the reinforcing layer 104 and the outer layer 103 are sequentially stacked.

[0163] In this first modified example, the same effects and advantages as described above can be obtained. Furthermore, since the radially inner portion of the thickened portion 102D is covered by the inner layer 102, the thickened portion 102D can be suitably protected by the inner layer 102. This prevents unexpected damage to the thickened portion 102D.

[0164] Figure 28 is a schematic enlarged cross-sectional view showing a second modified example according to the fourth embodiment of the arrangement structure of the thickened portion. In this second modified example, in a structure in which the thickened portion 102E is surrounded by an inner layer 102 and an outer layer 103 (reinforcement layer 104), the dimension of the thickened portion 102E in the front-rear direction is formed to be even shorter than that of the thickened portion 102D in the first modified example. The thickened portion 102E is integrally formed from a synthetic resin material containing thermally expandable microcapsules, as described above, and is a molded product in a primary foamed state.

[0165] In this second modified example, the same effects and advantages as in the first modified example can be obtained. Furthermore, since the front-to-back dimension of the thickened portion 102E is even shorter than in the second modified example, further weight reduction can be achieved.

[0166] Figure 29 is a schematic enlarged cross-sectional view showing a third modified example according to the fourth embodiment of the arrangement structure of the thickened portion. In this third modified example, the thickened portion 102F is arranged over substantially the entire fixed hood 113, and the inner layer 102 extends forward, covering the radially inner portion of the thickened portion 102F with the inner layer 102. The thickened portion 102F is integrally formed from a synthetic resin material containing thermally expandable microcapsules, as described above, and is a molded product in a primary foamed state.

[0167] In this third modified example, the same effects and advantages as in the first modified example can be obtained. Furthermore, since the thickened portion 102F is arranged over almost the entire surface of the fixed hood 113, it is possible to reduce weight while improving moldability and strength over almost the entire surface of the fixed hood 113.

[0168] Figure 30 is a schematic enlarged cross-sectional view showing a fourth modified example according to the fourth embodiment of the arrangement structure of the thickened portion. In this fourth modified example, the structure is such that the thickened portion 102F is arranged over substantially the entire fixed hood 113, and the outer surface of the thickened portion 102F is covered with the inner layer 102. The same effects and advantages as in the first modified example can be obtained in this fourth modified example as well. Furthermore, during molding, the prepreg sheets constituting the inner layer 102, the reinforcing layer 104, and the outer layer 103 are simply stacked on top of the thickened portion 102F, making the molding process easy.

[0169] Although embodiments have been described above, the present invention is not limited to the examples shown in the embodiments. For example, in the above embodiments, fitting adhesive portions 114 and 115 are provided at both ends of the reel seat base material 110, but the invention is not limited to this, and may be provided at only one of them.

[0170] Furthermore, although the fitted adhesive portions 114 and 115 are shown with an inner diameter adjustment layer 105 placed between the inner layer 102 and the outer layer 103, the arrangement is not limited to this, and the inner diameter adjustment layer 105 may also be placed in the innermost layer, which is radially inward of the inner layer 102.

[0171] Furthermore, although the reel sheet base material 110 is exemplified as being constructed by laminating prepreg sheets 102a to 105a, it is not limited to this, and may also be constructed by laminating SMC (Sheet Molding Compound) sheets, nonwoven fabric sheets, etc. In this case as well, the same effects and advantages as those described in the embodiment can be obtained.

[0172] Furthermore, although the embodiment shows a fixed hood 113 with a reinforcing layer 104, the invention is not limited to this, and the reinforcing layer 104 may also be provided to the movable hood 130. In this case, the movable hood 130 has an inner layer 102 and an outer layer 103 made of prepreg sheets 102a and 103a, similar to the fixed hood 113, with the reinforcing layer 104 placed between the inner layer 102 and the outer layer 103. In this case as well, the same effects and advantages as in the embodiment can be obtained.

[0173] Furthermore, the mating and bonding portions 114 and 115 are equipped with inner diameter adjustment layers 105 and 105, and are formed to be thicker than other parts, so it is possible to adjust the inner diameter by cutting or other processes after molding to correspond to the outer diameter of the member to be attached. In this case, the inner circumferential surfaces of the mating and bonding portions 114 and 115 are formed to the same inner diameter, resulting in good machining accuracy.

[0174] Furthermore, although a structure in which a spacer 141 is bonded to the fitting adhesive portion 114 and a screw member 120 is bonded to the fitting adhesive portion 115 has been shown, the structure is not limited to this, and a structure in which the rod body 100R1 or other members to be attached are bonded to the fitting adhesive portions 114 and 115 may also be used.

[0175] Furthermore, in the fourth embodiment, a thickened portion 102C and the like are integrally formed from a synthetic resin material that expands in volume when heated. However, the invention is not limited to this, and multiple components formed individually from similar synthetic resin materials may be combined to form the structure.

[0176] Next, the reel seat and reel seat base material according to the fifth and sixth embodiments will be described in detail with reference to the drawings. In the following description, when referring to "front and back," "left and right," and "up and down," the directions shown in Figure 31 will be used as the reference. The reel seat according to the embodiments is an example of a reel seat for a double-bearing reel for fishing (hereinafter simply referred to as "reel"). In addition, in the description of the drawings, the same elements are denoted by the same reference numerals, and redundant explanations will be omitted as appropriate.

[0177] (Fifth Embodiment) As shown in Figure 31, the reel seat 201 of this embodiment is a member for fixing a reel (not shown) to a fishing rod 200R, and the mounting legs of the reel (not shown, the same applies hereinafter) are attached to it. The fishing rod 200R is equipped with a cylindrical rod body 200R1, a rear grip 200G, etc. The rod body 200R1 is constructed by connecting a middle section, a tip section, etc., although not shown. The rod body 200R1 can be connected by a telescopic method, a parallel joint method, a reverse parallel joint method, a spigot method, or any other known joint method. The rod body 200R1 may be composed of a single rod body. The reel seat 201 is equipped with a reel seat base material 210 (see Figures 32 and 33), a movable hood 230, and a nut 231.

[0178] The reel seat base material 210 is the part that is gripped by the angler's fingers and is formed in a hollow cylindrical shape as shown in Figure 33. The entire reel seat base material 210 is made of a prepreg sheet in which reinforcing fibers are impregnated with synthetic resin. A detailed explanation of the prepreg sheet will be given later. The reel seat base material 210 comprises a gripping portion 211 that forms the outer shell, a reel leg mounting portion 212 on which the reel's mounting legs are placed, a fixing hood 213 which serves as a hood into which the front end of the reel's mounting legs are inserted and fixed, and a trigger 215. The rod body 200R1 is inserted through the hollow part inside the reel seat base material 210. The reel seat base material 210 is adhesively fixed to the rod body 200R1, for example, via a spacer (not shown).

[0179] The gripping portion 211 bulges upward, as shown in Figures 32 and 33. The reel leg mounting portion 212 extends in the front-rear direction and has a flat surface in cross-section (see Figure 33) on which at least a portion of the reel's mounting legs are placed.

[0180] As shown in Figure 33, the fixed hood 213 has a concave shape, and an opening 213a into which the rear end of the reel mounting leg is inserted opens forward. The trigger 215 is integrally formed with the reel seat base material 210 from a prepreg sheet, which will be described later. The trigger 215 is formed to be thicker than other parts of the reel seat base material 210, such as the gripping portion 211 and the reel leg mounting portion 212.

[0181] The trigger 215 is located at the lower part of the center of the reel seat base material 210 in the front-to-back direction. The trigger 215 protrudes downward and functions as a part that can be held by gripping the reel seat 201 with fingers. The trigger 215 has a roughly triangular cross-section. The amount of protrusion of the trigger 215 can be set as appropriate.

[0182] As shown in Figures 32 and 33, the front and rear curved surfaces 216 and 217 are formed on the front and rear of the trigger 215, respectively, and are curved in an upward-facing concave shape. The front curved surface 216 is continuous with the front lower surface of the reel seat base material 210. The rear curved surface 217 is continuous with the rear lower surface of the reel seat base material 210. The trigger 215 is constructed by laminating multiple prepreg sheets, which will be described later. Details of the lamination structure of the trigger 215 will be described later.

[0183] The movable hood 230 is configured to move axially (towards the rod tip or rod butt) to clamp or release the mounting legs of the reel by rotating the nut 231 around the axis of the reel seat base material 210. The nut 231 is screwed onto a screw member (not shown) attached to the front end of the reel seat base material 210.

[0184] Next, the prepreg sheets constituting the reel sheet substrate 210 will be described. Figure 34 is a schematic cross-sectional view showing the general structure of the layer in the reel sheet substrate.

[0185] A prepreg sheet is a fiber-reinforced resin prepreg in which reinforcing fibers are impregnated with a resin such as a matrix resin. Examples of reinforcing fibers that can be included in the prepreg sheet include carbon fibers, glass fibers, and any other known reinforcing fibers. Examples of resins that can be included in the prepreg sheet include thermosetting resins such as epoxy resins and thermoplastic resins such as PET. Examples of thermosetting resins include urea resin, melamine resin, phenolic resin, epoxy resin, unsaturated polyester resin, alkyd resin, and urethane resin.

[0186] The reel sheet base material 210 is formed by internal pressure molding, in which multiple prepreg sheets are layered onto an unshown profile and pressure is applied from the radially inward direction. As shown in Figure 34, the reel sheet base material 210 has a basic layer structure consisting of an inner layer 202 and an outer layer 203 that covers the inner layer 202. The inner layer 202 and the outer layer 203 are not single layers, but are composed of multiple layers stacked on top of each other. Specifically, a single laminated sheet formed by stacking multiple prepreg sheets radially is arranged in the circumferential direction to form a single cylindrical layer. In other words, each layer of the inner layer 202 and the outer layer 203 is formed in a cylindrical shape by connecting multiple laminated sheets in the circumferential direction.

[0187] In the inner layer 202 and the outer layer 203, at least some of the prepreg sheets use reinforcing fibers with different fiber directions. The prepreg sheets in each layer may have the same fiber direction or different fiber directions for the reinforcing fibers. The fiber direction of the prepreg sheet can be, for example, oriented at 0 degrees, 90 degrees, or in a grid pattern (plain weave or twill weave) of 0 degrees and 90 degrees relative to the circumferential direction of the reel sheet base material 210, or even oriented obliquely to the circumferential direction. In this case, the oblique direction of the fiber direction is preferably in the range of 20 to 70 degrees relative to the circumferential direction, and more preferably ±45 degrees relative to the circumferential direction. By changing the fiber direction pattern, the rigidity and strength of each layer can be freely changed.

[0188] Here, the prepreg sheet with obliquely oriented reinforcing fibers has the property that the reinforcing fibers tend to spread (stretch) radially outward during internal pressure molding, so it can flexibly follow (deform) the shape of the hollow cylindrical reel sheet base material 210 which has multiple curved surfaces. Therefore, by using a prepreg sheet with obliquely oriented reinforcing fibers, the advantage of stabilizing the molding quality of the reel sheet base material 210 can be obtained. Note that each layer of the inner layer 202 and outer layer 203 is not limited to being formed by stacking multiple prepreg sheets, but may be made from a single prepreg sheet. Also, the number of layers constituting the inner layer 202 and outer layer 203 can be set arbitrarily.

[0189] Next, the layer structure centered on the trigger 215 will be explained with reference to Figures 34, 35A-35C, and 36-38. Figure 35A is a schematic cross-sectional view showing the general outline of the layer structure along XXXVA-XXXVA in Figure 32, Figure 35B is a schematic cross-sectional view showing the general outline of the layer structure along XXXVB-XXXVB in Figure 32, and Figure 35C is a schematic cross-sectional view showing the general outline of the layer structure along XXXVC-XXXVC in Figure 32. Figure 36 is a schematic diagram showing the relationship between the side reinforcement layer, the first side coating layer, and the second side coating layer in the reel seat substrate, Figure 37 is a schematic diagram showing the relationship between the front upper coating layer and the rear upper coating layer in the reel seat substrate, and Figure 38 is a schematic diagram showing the relationship between the tip reinforcement layer, the lower coating layer, the front lower coating layer, and the rear lower coating layer in the reel seat substrate. Note that in Figures 36-37, each prepreg sheet is shown schematically as a single sheet.

[0190] As shown in Figures 34 and 35B, the trigger 215 comprises an inner layer 202, an outer layer 203, a tip reinforcing layer 204, left and right side reinforcing layers 205, 205 (see Figure 35B), and a lower covering reinforcing layer 208. The trigger 215 is a part that is integrally formed during the molding process of the reel seat base material 210. The configuration of each layer of the inner layer 202 and outer layer 203 in the trigger 215 is the same as the configuration described above. The trigger 215 also includes a thickened portion 202A that is formed to be continuous with the inner layer 202. The thickened portion 202A is formed by stacking multiple layers of prepreg sheets (not shown). As described above, the fiber direction of the prepreg sheets in the thickened portion 202A can be in various directions.

[0191] The tip reinforcement layer 204, the left and right side reinforcement layers 205, 205, and the lower covering reinforcement layer 208 all reinforce the curved portion of the trigger 215 and are positioned between the inner layer 202 and the outer layer 203. The configuration of the tip reinforcement layer 204, the left and right side reinforcement layers 205, 205, and the lower covering reinforcement layer 208 is the same as the configuration of the inner layer 202 and the outer layer 203 described above. Note that each layer constituting the tip reinforcement layer 204, the left and right side reinforcement layers 205, 205, and the lower covering reinforcement layer 208 is not limited to being formed by stacking multiple prepreg sheets, but may be made from a single prepreg sheet. Also, the number of layers of the tip reinforcement layer 204, the left and right side reinforcement layers 205, 205, and the lower covering reinforcement layer 208 can be set arbitrarily.

[0192] As shown in Figure 34, the tip reinforcement layer 204 is positioned at the lower part of the tip of the trigger 215. As shown in Figure 38, the tip reinforcement layer 204 has a roughly rectangular shape when viewed from below. As shown in Figures 34 and 35B, the tip reinforcement layer 204 is positioned to cover the lower end of the inner layer 202 of the trigger 215 from the front-rear and left-right directions. Note that the tip reinforcement layer 204 is not limited to covering the tip (lower end) from the front-rear and left-right directions, but may be positioned to cover the tip (lower end) from at least one of the front-rear and left-right directions.

[0193] As shown in Figure 34, the tip reinforcing layer 204 connects (structurally links) the front covering layer 206, which is positioned on the front surface (front curved surface 216) of the trigger 215, and the rear covering layer 207, which is positioned on the rear surface (rear curved surface 217) of the trigger 215, forming a reinforcing structure that contributes to improved strength. As shown in Figures 34 and 38, the front covering layer 206 is a layer that covers the outer surface of the inner layer 202 from the lower front surface of the reel seat base material 210 to the front surface of the trigger 215. The rear covering layer 207 is a layer that covers the outer surface of the inner layer 202 from the lower rear surface of the reel seat base material 210 to the rear surface of the trigger 215.

[0194] As shown in Figure 34, the front and rear upper edges 204c, 204c of the tip reinforcement layer 204 are superimposed on the outer surface of the lower edge 206a of the front covering layer 206 and the outer surface of the lower edge 207a of the rear covering layer 207, respectively. This overlapping structure enhances the integration of the tip reinforcement layer 204, the front covering layer 206, and the rear covering layer 207, thereby improving strength. Alternatively, the overlapping order of these edges may be reversed, so that the upper edges 204c, 204c of the tip reinforcement layer 204 are superimposed on the inner surface of the lower edge 206a of the front covering layer 206 and the inner surface of the lower edge 207a of the rear covering layer 207, respectively.

[0195] The left and right side reinforcing layers 205, 205 are positioned on the left and right sides of the trigger 215, as shown in Figure 35B. The left and right side reinforcing layers 205, 205 have a roughly triangular shape that narrows from the top 205a to the bottom 205b in a side view, as shown in Figure 36 (only the right side reinforcing layer 205 is shown in Figure 36, the same applies below). The left and right side reinforcing layers 205, 205 cover the curved portions on the left and right sides of the inner layer 202 of the trigger 215 from the left and right directions, as shown in Figures 35B and 36. The left and right side reinforcing layers 205, 205 may also be positioned to cover at least a portion of the curved portions on the left and right sides of the inner layer 202 of the trigger 215. As shown in Figure 35B, the lower edges 205f, 205f of the left and right side reinforcing layers 205, 205 are overlapped with the outer surfaces of the left and right upper edges 204c, 204c of the tip reinforcing layer 204. This overlapping structure enhances the integration between the left and right side reinforcing layers 205, 205 and the tip reinforcing layer 204, thereby further improving strength. Alternatively, the overlapping order of these edges may be reversed, so that the lower edges 205f, 205f of the left and right side reinforcing layers 205, 205 are overlapped with the inner surfaces of the left and right upper edges 204c, 204c of the tip reinforcing layer 204.

[0196] The front edges 205d, 205d (see Figure 36) of the left and right side reinforcing layers 205, 205 are superimposed on the outer surfaces of the rear side edges 206d, 206d (see Figure 38) of the front covering layer 206, although this is not shown in the figure. Also, the rear edges 205e, 205e (see Figure 36) of the left and right side reinforcing layers 205, 205 are superimposed on the outer surfaces of the front side edges 207d, 207d (see Figure 38) of the rear covering layer 207, respectively. In other words, the left and right side reinforcing layers 205, 205 connect (structurally link) the front covering layer 206 and the rear covering layer 207, forming a reinforcing structure that contributes to improved strength.

[0197] As shown in Figure 34, the lower covering reinforcement layer 208 is positioned on the inner surface of the outer layer 203. As shown in Figure 38, the lower covering reinforcement layer 208 has a front portion 208a that extends forward on either side of the trigger 215, a rear portion 208b that extends backward, and a central portion 208c that connects the front portion 208a and the rear portion 208b. The front portion 208a and the rear portion 208b have protruding portions 208d, 208d that extend in the left-right direction. The central portion 208c is sized to correspond to the left-right width of the tip of the trigger 215 and is narrower than the protruding portions 208d, 208d. As shown in Figures 34 and 35B, the central portion 228c is positioned to straddle the front and rear of the tip of the trigger 215 and covers a part of the outer surface of the tip reinforcement layer 204 (see Figure 35B).

[0198] As shown in Figures 35A and 38, the front portion 208a of the lower coating reinforcement layer 208 is superimposed on the outer surface of the front coating layer 206. As shown in Figures 35C and 38, the rear portion 208b of the lower coating reinforcement layer 208 is superimposed on the outer surface of the rear coating layer 207. These overlapping structures enhance the integrity of the lower coating reinforcement layer 208, the front reinforcement layer 204, the front coating layer 206, and the rear coating layer 207, thereby further improving strength.

[0199] As shown in Figures 35A-35C and 36, left and right first side covering layers 221, 221 and left and right second side covering layers 222, 222 are arranged on the left and right sides of the reel seat base material 210 so as to cover the left and right sides of the inner layer 202 (see Figures 35A-35C) (in Figure 36, only the right first side covering layer 221 and the second side covering layer 222 are shown; the same applies hereafter). As shown in Figure 36, the left and right first side covering layers 221, 221 and the left and right second side covering layers 222, 222 extend over substantially the entire front-to-back direction of the reel seat base material 210.

[0200] The left and right first side covering layers 221, 221 have a shape that is taller than other parts, with the central part 221a and the rear part 221b in the front-rear direction in a side view corresponding to the shapes of the fixed hood 213 (see Figure 32) and the gripping part 211 (see Figure 32), respectively. The lower part 221c of the left and right first side covering layers 221, 221 is superimposed on the outer surface of the upper edges 205c, 205c of the left and right side reinforcing layers 205, 205, as shown in Figures 35B and 36.

[0201] The left and right second side covering layers 222, 222 have a roughly rectangular shape when viewed from the side. The upper parts 222a, 222a of the left and right second side covering layers 222a, 222a are superimposed on the outer surfaces of the lower parts 221c, 221c of the left and right first side covering layers 221, 221, as shown in Figures 35A-35C and 36. The lower parts 222b, 222b of the left and right second side covering layers 222b, 222b are superimposed on the outer surfaces of the upper parts 205a, 205a of the left and right side reinforcing layers 205, 205, as shown in Figures 35B and 36. As a result, the upper parts 205a, 205a of the left and right side reinforcing layers 205, 205 are covered by parts of the left and right first side covering layers 221, 221 and the left and right second side covering layers 222, 222. These overlapping structures enhance the integrity of the left and right side reinforcing layers 205, 205, the left and right first side covering layers 221, 221, and the left and right second side covering layers 222, 222, thereby further improving strength. Alternatively, the overlapping order may be reversed, with the lower parts 222b, 222b of the left and right second side covering layers 222, 222 overlapping the inner surfaces of the upper parts 205a, 205a of the left and right side reinforcing layers 205, 205, respectively.

[0202] As shown in Figures 34, 35A, and 37, a front upper covering layer 223, which forms part of the reel leg mounting portion 212, is positioned on the front upper part of the reel seat base material 210 so as to cover the inner layer 202 (see Figures 34 and 35A). The front upper covering layer 223 has a roughly rectangular shape (roughly square) in plan view. The left and right edges 223a, 223a of the front upper covering layer 223 overlap the outer surfaces of the upper edges 221d, 221d of the left and right first side covering layers 221, 221, as shown in Figure 35A. Alternatively, the overlapping order of these edges may be reversed, so that the left and right edges 223a, 223a of the front upper covering layer 223 overlap the inner surfaces of the upper edges 221d, 221d of the left and right first side covering layers 221, 221.

[0203] As shown in Figures 34, 35B, 35C, and 37, the upper rear portion of the reel seat base material 210 is covered with a rear upper covering layer 224 that forms part of the gripping portion 211, so as to cover the inner layer 202 (see Figures 34, 35B, and 35C). As shown in Figure 37, the rear upper covering layer 224 has a roughly square shape (roughly rectangular shape) in plan view. The left and right edges 224a, 224a of the rear upper covering layer 224 overlap the outer surfaces of the upper edges 221d, 221d of the left and right first side covering layers 221, 221, as shown in Figures 35B and 35C. Alternatively, the overlapping order of these edges may be reversed, so that the left and right edges 224a, 224a of the rear upper covering layer 224 overlap the inner surfaces of the upper edges 221d, 221d of the left and right first side covering layers 221, 221.

[0204] Next, a method for molding the reel seat base material 210 according to this embodiment will be described. For molding, an internal pressure bag (internal mold) that can be subjected to internal pressure, such as that of a tube, is prepared. Then, prepreg sheets constituting the inner layer 202 are stacked around this internal pressure bag, and on top of that, prepreg sheets constituting the front reinforcement layer 204, left and right side reinforcement layers 205, 205, front covering layer 206, rear covering layer 207, left and right first side covering layers 221, 221, left and right second side covering layers 222, 222, front upper covering layer 223, rear upper covering layer 224, and lower covering reinforcement layer 208 are stacked, respectively. Then, a prepreg sheet constituting the outer layer 203 is stacked on top of these stacked layers.

[0205] Subsequently, the internal pressure bag, made up of stacked prepreg sheets, is placed inside the outer mold, and the outer mold is clamped with a press machine. Then, internal pressure is applied to the internal pressure bag by heating it with air, liquid, or a heat-expanding powder to form it. After forming, the internal pressure bag is removed to complete the hollow cylindrical reel seat base material 210.

[0206] As described above, the reel seat base material 210 of this embodiment provides a tip reinforcing layer 204, left and right side reinforcing layers 205, 205, and a lower covering reinforcing layer 208 to the curved portion of the trigger 215 where stress tends to concentrate during use. This directly increases the strength and rigidity of each part, thereby improving the overall strength of the trigger 215. This suppresses damage caused by localized stress concentration. Furthermore, by providing the tip reinforcing layer 204, left and right side reinforcing layers 205, 205, and lower covering reinforcing layer 208 made of prepreg sheet to the curved portion of the trigger 215, bending rigidity and fatigue resistance are improved, resulting in improved structural stability and durability during long-term use. In addition, the trigger 215 can be made lighter, and the overall weight of the reel seat base material 210 can be reduced. This contributes to improved fishing operability and reduced fatigue during prolonged use. It also allows for optimization of grip and sensitivity transmission. Furthermore, the lower coating reinforcement layer 208 is not necessarily required, and even if this reinforcement layer is not provided, the above-mentioned effects can still be favorably exhibited.

[0207] Furthermore, since the reel seat base material 210 is hollow and cylindrical and formed by laminating prepreg sheets, it is easier to sense the bite transmitted from the rod body 200R1 during actual fishing, and an improvement in fishing results can be expected.

[0208] Furthermore, since the tip reinforcement layer 204, the left and right side reinforcement layers 205, 205, and the lower covering reinforcement layer 208 are formed from prepreg sheets, it is possible to reduce weight while maintaining a predetermined strength.

[0209] Furthermore, the front covering layer 206, the rear covering layer 207, and the left and right side reinforcing layers 205, 205 connecting them enable reinforcement from three directions, forming a highly rigid structure for the trigger 215 as a whole. Therefore, the strength of the trigger 215 can be improved.

[0210] Furthermore, the front covering layer 206, the rear covering layer 207, and the tip reinforcing layer 204 connecting them enable reinforcement from three directions, forming a highly rigid structure for the trigger 215 as a whole. Therefore, the strength of the trigger 215 can be improved. In particular, the tip reinforcing layer 204 improves the strength and durability of the tip of the trigger 215, where load is concentrated during fishing operations, and prevents bending and damage to the reel seat base material. This stabilizes fishing operability. In addition, because the tip reinforcing layer 204 improves the strength and durability of the tip of the trigger 215, it is possible to effectively prevent damage to the tip of the trigger 215 from contact with the ground, rocks, boat railings, fishing equipment, etc., during fishing operations, when moving between fishing spots, or during transportation.

[0211] Furthermore, since the left and right side reinforcement layers 205, 205 and the tip reinforcement layer 204 are each formed from independent prepreg sheet layers, each reinforcement layer can be designed and selected individually. This makes it possible to select the optimal material and shape according to the part, increasing the design options.

[0212] Furthermore, since the tip reinforcing layer 204, the left and right side reinforcing layers 205, 205, and the lower covering reinforcing layer 208 are held between the inner layer 202 and the outer layer 203 during the molding of the trigger 215, these reinforcing layers can be accurately positioned relative to the curved portion. In addition, since the reinforcing layers are covered by the outer layer 203, peeling or snagging of the edges of the reinforcing layers can be effectively prevented. Moreover, since the reinforcing layers are not exposed by the outer layer 203, the appearance is improved.

[0213] Furthermore, since the edges of the tip reinforcement layer 204 and the left and right side reinforcement layers 205, 205 overlap, the resistance of these reinforcement layers to peeling and cracking is improved. In addition, it is possible to prevent lifting and displacement of the edges of the reinforcement layers, and the dimensional accuracy of the reel seat base material 210 is improved. Also, since the overlapping parts are firmly pressed together by the pressure during internal pressure molding, the gap between layers is reduced, and the risk of peeling is also reduced. Furthermore, the strength and rigidity of the overlapping parts can be increased, and local deformation and damage during internal pressure molding can be prevented. In addition, since the edges of the tip reinforcement layer 204 and the front covering layer 206 and rear covering layer 207 overlap, this configuration also increases the resistance of the reinforcement layers to peeling and deformation, and similar effects to those described above are obtained.

[0214] Furthermore, the reel seat 201 of this embodiment achieves both lightness and strength. The reduced weight also improves fishing operability. Additionally, it makes it easier to sense fish bites transmitted from the attached component during actual fishing, which can lead to improved catch rates.

[0215] Furthermore, the fishing rod 200R of this embodiment achieves both lightness and strength. The reduced weight also improves fishing operability. Additionally, it makes it easier to sense fish bites transmitted from the rod body 200R1 during actual fishing, leading to improved catch rates.

[0216] Figure 39 is a schematic enlarged cross-sectional view showing a modified example of the layer structure of the trigger portion in the reel seat substrate. In the modified reel seat substrate 210, the thickened portion 202A (see Figure 34, the same applies hereinafter), which is part of the inner layer 202, is formed from an integrally molded product 202B made of synthetic resin material. The integrally molded product 202B is sized to be positioned over a relatively wide area of ​​the thickened portion 202A and is integrated with the prepreg sheet that constitutes the inner layer 202.

[0217] According to this modified reel seat base material 210, a portion of the inner layer 202 can be replaced with an integrally molded product 202B, which simplifies the formation of the trigger 215 and, consequently, the formation of the reel seat base material 210.

[0218] (Sixth Embodiment) Next, the reel seat substrate of the sixth embodiment will be described with reference to Figure 40. Figure 40 is a schematic enlarged cross-sectional view showing the layer structure of the trigger portion of the reel seat substrate according to the sixth embodiment of the present invention. The difference between this embodiment and the fifth embodiment is that a thick portion 202C made of a synthetic resin material that expands in volume when heated is placed inside the trigger 215. The arrangement structure shown in Figure 40 shows a state in which the thick portion 202C in a primary foamed state (a state that has not fully foamed) is placed inside the inner layer 202. Since the thick portion 202C has the property of expanding in volume when heated, it is acceptable for there to be a small gap 200S11 between the outer surface of the thick portion 202C and the inner surface of the inner layer 202 when it is placed.

[0219] The thickened portion 202C contains thermally expandable microcapsules and is a molded product in a primary foamed state as described above. The thickened portion 202C can be made using thermally expandable microcapsules alone, a compound material containing thermally expandable microcapsules, or a foaming agent. Alternatively, the thickened portion 202C may be constructed by laminating a synthetic resin sheet (synthetic resin material) containing thermally expandable microcapsules. Examples of thermally expandable microcapsules include thermally expandable thermoplastic microcapsules and those containing an external coating of aminoplast resin such as melamine or urea / formaldehyde resin. The thickened portion 202C formed from such materials has a lower specific gravity (lower density) compared to that of the fifth embodiment.

[0220] On the other hand, the thickened portion 202C may be composed of a foaming agent. Any known foaming agent that has the property of foaming when heated during molding can be used. The thickened portion 202C may be formed of a synthetic resin material that has the property of expanding in volume when heated, and materials that do not contain a foaming agent, such as shape memory polymers and gas storage polymers, can be used.

[0221] Various types of thermally expandable microcapsules and foaming agents can be used, including those with low to medium temperature expansion ranges and those with medium to high temperature expansion ranges. For thermally expandable microcapsules with low to medium temperature expansion ranges, for example, the temperature at which expansion begins is in the range of 80 to 100°C, and the temperature at which expansion is maximum is in the range of 120 to 140°C. For thermally expandable microcapsules with medium to high temperature expansion ranges, for example, the temperature at which expansion begins is in the range of 120 to 130°C, and the temperature at which expansion is maximum is in the range of 170 to 200°C. Here, the primary foaming state is the state in which the material is heated to a temperature above the temperature at which expansion begins and below the temperature at which expansion is maximum. The secondary foaming state is the state in which the material is heated to near the temperature at which expansion is maximum.

[0222] Next, a molding method for the area around the trigger 215 of the reel seat base material 210 according to this embodiment will be described. In this embodiment as well, an internal pressure bag (internal mold) that can apply internal pressure, such as that of a tube, is prepared for molding. Then, a thick-walled portion 202C formed in a primary foam state from a synthetic resin material containing thermally expandable microcapsules is placed at a predetermined position in this internal pressure bag. After that, similar to the fifth embodiment, prepreg sheets constituting the tip reinforcement layer 204, left and right side reinforcement layers 205, 205, front covering layer 206, rear covering layer 207, left and right first side covering layers 221, 221, left and right second side covering layers 222, 222, front upper covering layer 223, rear upper covering layer 224, lower covering reinforcement layer 208 and outer layer 203 are stacked.

[0223] Subsequently, the internal pressure bag, which consists of the thickened section 202C and the prepreg sheet stacked together, is placed inside the outer mold, and the outer mold is clamped with a press machine. Then, while heating to near the temperature at which the expansion of the thickened section 202C is maximum, internal pressure is applied to the internal pressure bag using air, liquid, or a heat-expanding powder, and the product is molded. After molding, the internal pressure bag is removed, completing a hollow cylindrical reel seat base material 210 in which the expanded thickened section 202C is in close contact with the prepreg sheet inside the trigger 215.

[0224] As described above, the reel seat 201 of this embodiment allows the inner portion of the trigger 215 to be replaced with the thickened portion 202C, making it easy to form the trigger 215. Furthermore, the weight of the trigger 215 can be reduced by replacing the thickened portion 202C with a synthetic resin material. In addition, since the thickened portion 202C has the property of expanding in volume when heated, pressure can be applied from the inside of the trigger 215 during molding to suitably press the prepreg sheet of the trigger 215 against the outer mold, etc. This ensures that the prepreg sheet adheres closely to the outer mold, etc., preventing the formation of voids between the layers of the prepreg sheet. Therefore, moldability is improved. In particular, since the pressing force due to the expansion of the thickened portion 202C can be applied to curved portions where internal pressure is difficult to apply during molding, the shape and strength of the trigger 215 are stabilized, and a reel seat base material 210 with the desired quality can be obtained.

[0225] Furthermore, the volume of the thickened portion 202C expands appropriately due to the action of the thermally expandable microcapsules and foaming agent, so that the prepreg sheet of the trigger 215 adheres more closely to the outer mold, etc., and the occurrence of voids can be more effectively prevented. In addition, according to the reel sheet 201 of this embodiment, the prepreg sheet ensures sufficient strength for the trigger 215 while reducing weight by arranging the thickened portion 202C.

[0226] Figure 41 is a schematic enlarged cross-sectional view showing a modified example of the arrangement structure of the thickened portion. In this modified example, the thickened portion 202C is surrounded by the inner layer 202, the front covering layer 206, the rear covering layer 207, and the tip reinforcing layer 204. The thickened portion 202C is integrally formed from a synthetic resin material containing thermally expandable microcapsules, as described above, and is a molded product in a primary foamed state.

[0227] When forming the trigger 215 of the reel seat base material 210 according to the modified example, for example, a prepreg sheet constituting the inner layer 2 is placed on an internal pressure bag (internal mold) that can apply internal pressure such as a tube, and the thickened portion 202C is placed on top of it. After that, the prepreg sheets constituting each layer are stacked in the same manner as described above.

[0228] The same effects and advantages as described above can be obtained in this modified form as well. Furthermore, since the radially inner portion of the thickened portion 202C is covered by the inner layer 202, the thickened portion 202C can be suitably protected by the inner layer 202. This prevents unexpected damage to the thickened portion 202C.

[0229] Although embodiments have been described above, the present invention is not limited to the examples shown in the embodiments. For example, in the above embodiments, the trigger 215 was shown to have a tip reinforcing layer 204, left and right side reinforcing layers 205, 205 and a lower covering reinforcing layer 208 as reinforcing layers, but it is not limited to this, and a configuration with at least one of these reinforcing layers may be used.

[0230] Furthermore, although the above embodiment shows the tip reinforcing layer 204 and the side reinforcing layers 205, 205 being formed from mutually independent prepreg sheets, the invention is not limited to this, and at least two of the tip reinforcing layer 204 and the left and right side reinforcing layers 205, 205 may be formed from a continuous prepreg sheet. By using a continuous prepreg sheet in this way, the reinforcing layers are structurally continuous, improving the integrity and rigidity of the reinforcing material and enhancing durability.

[0231] Furthermore, although the diagram shows the tip reinforcing layer 204, the left and right side reinforcing layers 205, 205, and the lower covering reinforcing layer 208 arranged between the inner layer 202 and the outer layer 203, the diagram is not limited to this arrangement, and the layers may be arranged on the inner surface side of the inner layer 202 or on the outer surface side of the outer layer 203.

[0232] Furthermore, in the sixth embodiment, the thickened portion 202C etc. is integrally formed from a synthetic resin material that expands in volume when heated, but the invention is not limited to this, and multiple members formed individually from the same synthetic resin material may be combined to form the structure. Also, the thickened portion 2C may be removed after molding.

[0233] 1 Reel seat 2 Inner layer 3 Outer layer 4 Reinforcement layer 5 Inner diameter adjustment layer 10 Reel seat base material 13 Fixing hood (hood) 13a Opening 13b Mounting part 13c Inner wall part 13d Outer wall part 16 First curved part 2B Integrated molded product 2C-2F Thickened part 101 Reel seat 102 Inner layer 103 Outer layer 104 Reinforcement layer 105 Inner diameter adjustment layer 110 Reel seat base material 113 Fixing hood (hood) 113a Opening 113b Mounting part 113c Inner wall part 113d Outer wall part 116 First curved part 102B Integrated molded product 102C-102F Thickened part 201 Reel seat 202 Inner layer 202B Integrated molded product 202C Thick section 203 Outer layer 204 Tip reinforcement layer (reinforcement layer) 205 Side reinforcement layer (reinforcement layer) 206 Front covering layer (front layer) 207 Rear covering layer (rear layer) 208 Lower covering reinforcement layer (reinforcement layer) 210 Reel seat base material 211 Gripping section 212 Reel leg mounting section 213 Fixing hood (hood) 215 Trigger 200R Fishing rod

Claims

1. A reel seat having a concave hood into which the mounting legs of a reel are inserted, wherein the hood comprises: a mounting portion on which the inserted mounting legs are placed; an inner wall portion facing the mounting portion; an outer wall portion located outside the inner wall portion; a first curved portion provided on the rear side of the hood, extending from the mounting portion to the inner wall portion; and a second curved portion provided on the opening side of the hood, extending from the inner wall portion to the outer wall portion, wherein a reinforcing layer is provided on at least one of the first curved portion and the second curved portion.

2. The reel seat according to claim 1, characterized in that the reinforcing layer is provided continuously over both the first curved portion and the second curved portion, or is provided individually over the first curved portion and the second curved portion.

3. The reel seat according to claim 1, characterized in that the reinforcing layer is formed from a prepreg sheet in which reinforcing fibers are impregnated with synthetic resin.

4. The reel seat according to claim 3, characterized in that the hood comprises an inner layer and an outer layer covering the inner layer, and the reinforcing layer is disposed between the inner layer and the outer layer.

5. The reel seat according to claim 4, characterized in that at least a portion of the inner layer is formed by an integrally molded product made of synthetic resin material.

6. The reel seat according to claim 1, characterized in that a thickened portion is arranged inside the hood, and the thickened portion is made of a synthetic resin material that expands in volume when heated.

7. A hollow cylindrical reel seat base material having a gripping portion, a reel leg mounting portion on which the reel's mounting legs are placed, and a hood on which the reel's mounting legs are fixed, the entire material being formed from a prepreg sheet made of reinforcing fibers impregnated with synthetic resin, wherein cylindrical fitting and bonding portions are formed at one or both ends in the axial direction, into which the member to be attached is fitted and bonded, and the hood and the fitting and bonding portions are formed to be thicker than the other parts.

8. The reel seat base material according to claim 7, characterized in that it comprises an inner layer and an outer layer covering the inner layer.

9. The reel seat base material according to claim 8, characterized in that a reinforcing layer is formed between the inner layer and the outer layer of the hood.

10. The reel seat substrate according to claim 8, characterized in that, in addition to the inner layer and the outer layer, an inner diameter adjustment layer is formed in the fitting adhesive portion for adjusting the size of the inner diameter in accordance with the outer diameter of the member to be attached.

11. The reel seat base material according to claim 7, characterized in that a thickened portion is arranged on the inside of the hood, and the thickened portion is made of a synthetic resin material that expands in volume when heated.

12. A hollow cylindrical reel seat base material having a gripping portion, a reel leg mounting portion on which the reel's mounting legs are placed, a hood on which the reel's mounting legs are fixed, and a trigger, the entire structure being formed from a prepreg sheet made of reinforcing fibers impregnated with synthetic resin, wherein the trigger has a curved portion, and the curved portion is provided with a reinforcing layer to reinforce the trigger.

13. The reel seat base material according to claim 12, comprising a front layer disposed on the front part of the trigger and a rear layer disposed on the rear part of the trigger, wherein the reinforcing layer includes side reinforcing layers disposed on the left and right sides of the trigger and connecting the front layer and the rear layer.

14. The reel seat base material according to claim 12, comprising a front layer disposed on the front portion of the trigger and a rear layer disposed on the rear portion of the trigger, wherein the reinforcing layer includes a tip reinforcing layer disposed below the tip of the trigger and connecting the front layer and the rear layer.

15. The reel seat base material according to claim 12, comprising a front layer disposed on the front part of the trigger and a rear layer disposed on the rear part of the trigger, wherein the reinforcing layer includes side reinforcing layers disposed on the left and right sides of the trigger and connecting the front layer and the rear layer, and a tip reinforcing layer disposed below the tip of the trigger and connecting the front layer and the rear layer, wherein at least two of the left and right side reinforcing layers and the tip reinforcing layer are formed from a continuous sheet, or the left and right side reinforcing layers and the tip reinforcing layer are formed from separate sheets.

16. The reel seat substrate according to claim 12, wherein the trigger comprises an inner layer and an outer layer covering the inner layer, and the reinforcing layer is formed between the inner layer and the outer layer.

17. The reel seat base material according to claim 12, wherein the trigger comprises an inner layer and an outer layer covering the inner layer, and at least a portion of the inner layer is formed from an integrally molded product of a synthetic resin material.

18. The reel seat base material according to claim 12, wherein a thickened portion is arranged inside the trigger, and the thickened portion is made of a synthetic resin material that expands in volume when heated.

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