Preform for outer part of fishing rod and fishing rod rear grip and fishing rod reel seat formed using the same

Abstract

The present invention provides a pre-forming blank for an external part of a fishing rod, which can correspond to a fishing rod having various sizes to which it is to be fitted and bonded, and which can stabilize the quality of the formed product. Specifically, the pre-forming blank for an external part of a fishing rod according to the present invention is composed of a cylindrical body, is formed by internal pressure forming and is used as an external part, has a body portion, and has a fitting and bonding portion on one or both ends of the body portion, which is to be fitted and bonded to a fishing rod, the fitting and bonding portion having an innermost layer, an inner diameter adjustment layer, a body layer, and an outermost layer, all of which are reinforced fiber resin layers, and the reinforced fibers of the inner diameter adjustment layer are oriented so as to be obliquely meshed within a range of 20 to 70 degrees with respect to the circumferential direction of the pre-forming blank.

Description

Technical Field

[0001] This invention relates to a preform for fitting and bonding external parts to the outer peripheral surface of a fishing rod, and more particularly to a preform for forming a fishing rod rear grip and a fishing rod reel holder, and a fishing rod rear grip and a fishing rod reel holder formed using the preform. Background Technology

[0002] Previously, as external parts that are fitted and bonded to the outer circumference of a fishing rod, there are known fishing rod reel holders and fishing rod handles made of cylindrical bodies.

[0003] Existing rod reel holders and rod handles, which are made of cylindrical bodies, need to be designed and shaped separately to match the outer diameter of the rod to be glued together, which presents a challenge in terms of manufacturing effort. In addition, the glued joint of the rod needs to have higher strength than other parts.

[0004] As a preform for forming a tubular body (cylindrical body), for example, Patent Document 1 discloses a method for manufacturing a tubular body, comprising: a first step of forming a tubular laminated body extending axially and having a hollow interior by stacking prepreg sheets; a second step of installing the laminated body into a mold cavity; and a third step of applying pressure to the hollow interior within the mold cavity, causing the laminated body to expand while being pressed against the surface of the mold cavity and heated for forming, wherein the mold includes a first mold forming a first axial range of the mold cavity, the first mold being a non-parting mold that does not have an axially extending parting line on the surface of the mold cavity.

[0005] Furthermore, Patent Document 2 discloses a wedge club shaft in which the bending stiffness of the portion less than 150mm from the tip (the tip portion) of the carbon fiber reinforced resin wedge club shaft is 3.0 × 10⁻⁶. 6 kgf·mm 2 Below this, the bending stiffness of the portion above 650mm from the top, i.e., the grip mounting part, is 7.0 × 10. 6 kgf·mm 2 The bending stiffness of the portion 350mm or more but less than 500mm from the top, i.e., the central part, gradually increases from the top side towards the handle side with a gradient of 7000 to 10000 kgf·mm. The bending stiffness of the portion 500mm or more but less than 650mm from the top, i.e., the root part, gradually increases from the top side towards the handle side with a gradient of 12000 to 20000 kgf·mm.

[0006] Patent documents

[0007] Patent Document 1: Japanese Patent Application Publication No. 2023-14787

[0008] Patent Document 2: Japanese Patent Application Publication No. 2004-033638 Summary of the Invention

[0009] While Patent Document 1 discloses a method for forming a tubular body by applying pressure to the hollow portion of an acting preform, it does not disclose the application of this preform to various parts placed externally on the outer circumferential surface of fishing rods of various sizes. Furthermore, even if this technique is used to form a fishing rod grip or a fishing rod reel holder, it is necessary to manufacture individual preforms that match the specified size or shape of the fishing rod to be bonded, and to internally press them to form them separately. Moreover, in this method, since the bonding portion and other parts are a layered structure of the same prepreg, the bonding portion cannot have sufficient strength.

[0010] Furthermore, although the invention described in Patent Document 2 discloses a method for manufacturing a rod body by internal pressure molding, even if this technology is used to form a handle for a fishing rod or a reel seat for a fishing rod, it will be the same as the technology described in Patent Document 1, as it cannot be applied to tubular bodies of various sizes. It needs to be manufactured separately according to the specified size or shape of the fishing rod to be fitted and bonded. Moreover, since the fitted and bonded part and other parts are the same prepreg layered structure, the fitted and bonded part cannot have sufficient strength.

[0011] The present invention can solve the problems of the prior art. The technical problem to be solved is to use a common preform to form an external part of a cylindrical body that is fitted and bonded to the outer circumferential surface of a fishing rod, and to have the required strength and flexibility for fishing rods of various sizes that are fitted and bonded.

[0012] To achieve the above objectives, the first invention of the present invention is a preform for an external part that is fitted and bonded to the outer peripheral surface of a fishing rod. The preform is characterized in that it is a cylindrical body formed by internal pressure molding and used as an external part. It has a body portion, and at one or both ends of the body portion, there are fitting and bonding portions that are fitted and bonded to the outer peripheral surface of the fishing rod. In the body portion, the fitting and bonding portions are composed of an innermost layer, an inner diameter adjustment layer, a body layer, and an outermost layer. The portion other than the fitting and bonding portions is composed of the innermost layer, the body layer, and the outermost layer. The innermost layer, the inner diameter adjustment layer, the body layer, and the outermost layer are all reinforced fiber resin layers. The reinforcing fibers of the inner diameter adjustment layer are oriented such that they are inclined and intersected in a mesh pattern within a range of 20 to 70 degrees relative to the circumference of the preform.

[0013] Its characteristic is that, when viewed circumferentially, the innermost layer, the body layer, and the outermost layer are formed by two or more reinforcing fiber prepreg films, each wrapped once.

[0014] The inner diameter adjustment layer is characterized by being formed using one or more pieces of reinforced fiber prepreg film that are formed in a manner that, when viewed in the circumferential direction, wrap around the surface at least once.

[0015] The inner diameter adjustment layer, when viewed circumferentially, is formed by multiple turns of a single piece of plain or twill fabric, and the reinforcing fibers of the single piece of plain or twill fabric are wound together, with the mesh crossing obliquely within a range of 20 to 70 degrees relative to the circumference of the pre-shaped blank for the fishing rod's rear grip.

[0016] The characteristic feature is that a portion of the innermost layer is formed to overlap with the inner diameter adjustment layer in the axial direction of the preform.

[0017] The characteristic feature is that a portion of the innermost layer is formed on the inner surface of the body layer.

[0018] The feature is that, apart from the interlocking adhesive portion, the body portion is formed by extending the innermost layer, the body layer, and the outermost layer.

[0019] The feature is that the external component is a rear grip or a cable reel holder.

[0020] Furthermore, in order to achieve the above objectives, the second invention of the present invention is a rear grip for a fishing rod, characterized in that the rear grip for a fishing rod is formed by internal pressure forming of the above-mentioned external parts of the fishing rod using a pre-formed blank.

[0021] Furthermore, in order to achieve the above objectives, the third invention of the present invention is a reel holder for fishing rods, characterized in that the reel holder for fishing rods is formed by internal pressure forming of the above-mentioned external parts of fishing rods using a pre-formed blank.

[0022] According to the first invention described above, in a preform for forming a cylindrical external part that is fitted and bonded to the outer circumferential surface of a fishing rod, an inner diameter adjustment layer is provided on the fitting and bonding portion fitted and bonded to the outer circumferential surface of the fishing rod. This inner diameter adjustment layer orients the reinforcing fibers such that the mesh is obliquely crossed in the range of 20 to 70 degrees relative to the circumferential direction of the preform. This allows the strength of the fitting and bonding portion to be higher than that of other portions. Furthermore, during internal pressure forming, the fibers of the inner diameter adjustment layer in the circumferential direction easily extend (stretch) radially outward. Therefore, the number of laminated sheets can be minimized during internal pressure forming of the preform, and it can accommodate fishing rods of various sizes that are fitted and bonded.

[0023] Furthermore, according to the second and third inventions of the present invention, by using the pre-shaped blank involved in the first invention to manufacture the rear grip for fishing rods and the reel holder for fishing rods, it is possible to provide a rear grip for fishing rods and the reel holder for fishing rods with stable forming quality. Attached Figure Description

[0024] Figure 1 (a) is a perspective view of a fishing rod 1 according to an embodiment of the present invention, and (b) is a front view of a fishing rod 1 according to an embodiment of the present invention.

[0025] Figure 2 (a) is a perspective view of a preform 10a for a fishing rod rear grip according to an embodiment of the present invention, and (b) is a front view of a preform 10a for a fishing rod rear grip according to an embodiment of the present invention.

[0026] Figure 3 (a) is a cross-sectional view of a preform 10a for a fishing rod rear grip according to an embodiment of the present invention, and (b) is a cross-sectional view of the layer structure of the preform 10a for a fishing rod rear grip according to an embodiment of the present invention.

[0027] Figure 4 This figure illustrates a method for forming the layer structure of the interlocking and bonding portion 3 of the preform 10a for the rear grip of a fishing rod according to one embodiment of the present invention.

[0028] Figure 5 This is a diagram illustrating the expansion of the fiber diameter of the reinforcing fiber resin in the inner diameter adjustment layer 5 of the fishing rod rear grip preform 10a according to one embodiment of the present invention.

[0029] Figure 6 This is a partial cross-sectional view of a preform 10a for a fishing rod handle according to one embodiment of the present invention.

[0030] Figure 7 (a) is a perspective view of a preform 9a for a fishing rod reel holder according to an embodiment of the present invention, and (b) is a front view of a preform 9a for a fishing rod reel holder according to an embodiment of the present invention.

[0031] Symbol Explanation

[0032] 1-Fishing rod; 2-Rod body; 3-Matching and bonding part; 4-Innermost layer; 5-Inner diameter adjustment layer; 6-Body layer; 7-Outermost layer; 8-Body part; 9-Reel holder; 9a-Reel holder preform; 10-Rear grip; 10a-Rear grip preform. Detailed Implementation

[0033] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In the various drawings, common constituent elements are labeled with the same reference numerals. For ease of explanation, the drawings are not necessarily drawn to an exact scale; this should be noted.

[0034] Figure 1 This is a diagram illustrating one embodiment of the fishing rod 1 according to the present invention. Figure 1 (a) shows a three-dimensional view of fishing rod 1. Figure 1 (b) A front view of the fishing rod 1 is shown. As shown, the fishing rod 1 includes: a rod body 2; a reel seat 9; a line guide (not shown) mounted on the rod body 2; and a rear grip 10 formed on the rear end of the rod body 2.

[0035] The rod body 2 is constructed, for example, by connecting the first section, the middle section, and the tip section. These rod bodies 2 are joined, for example, by a plug-in joint. The first section, the middle section, and the tip section can be joined by a pull-out method, a reverse plug-in method, a sleeve method, or any other known joining method. The rod body 2 can also be constructed from a single rod body.

[0036] The first, middle, and tip sections are, for example, tubular bodies made of fiber-reinforced resin. These tubular bodies are manufactured by winding a fiber-reinforced resin polyester film (prepreg) impregnated with a matrix resin in reinforcing fibers onto a mandrel, and then heating and curing the prepreg. The reinforcing fibers included in the prepreg can be, for example, carbon fiber, glass fiber, or any other known reinforcing fibers. The matrix resin included in the prepreg can be a thermosetting resin such as epoxy resin. After the prepreg is cured, the mandrel is removed. Furthermore, the outer surface of the tubular body is appropriately ground. Each rod body 2 can also be solid. Similarly, although not shown, multiple line guides are provided on the first, middle, and tip sections to guide the fishing line released from a reel (not shown) mounted on a reel holder 9.

[0037] Next, refer to Figure 2 , 3 4. As an example of a preform for an external part that is fitted and bonded to the outer peripheral surface of the fishing rod 1 (rod body 2) involved in the present invention, a preform 10a (hereinafter referred to as the rear grip preform 10a) for forming a fishing rod will be described. Figure 2 This is a diagram showing the appearance of the rear grip preform 1. Figure 2 (a) shows a perspective view of the rear grip preform 10a. Figure 2 (b) A front view of the rear grip preform 10a is shown. Furthermore, Figure 3This figure illustrates the internal structure of the rear grip preform 10a according to one embodiment of the present invention. Figure 3 (a) shows a cross-sectional view of the rear grip preform 10a. Figure 3 (b) shows a cross-sectional view of the laminated structure of the rear grip preform 10a. Figure 4 This figure illustrates a method for forming a laminated structure of the fitting and bonding portion 3 of the rear grip preform 10a according to one embodiment of the present invention.

[0038] like Figure 2 , 3 As shown, the rear grip preform 10a has a body part 8, and a cylindrical fitting and bonding part 3 for fitting and bonding the rod body 2 is provided at one or both ends of the body part 8. It is used to form the rear grip 10 of the fishing rod 1 by internal pressure molding. The fitting and bonding part 3 has an innermost layer 4, an inner diameter adjustment layer 5, a body layer 6, and an outermost layer 7. All layers are reinforced fiber resin layers.

[0039] like Figure 4 As shown, the reinforcing fibers of the inner diameter adjustment layer 5 constituting the rear grip preform 10a are oriented such that they intersect at an angle within a range of 20 to 70 degrees relative to the circumference of the rear grip preform 10a. Through this configuration, as... Figure 5 As shown, by making the reinforcing fibers oblique relative to the diameter expansion direction, sufficient forming pressure can be obtained to press them onto the mold during internal pressure forming. According to the rear grip preform 10a formed by the above configuration, during internal pressure forming, the reinforcing fibers of the inner diameter adjustment layer 5 in the circumferential direction easily extend (stretch) radially outward. Therefore, during internal pressure forming, the number of laminated sheets can be minimized, and the required strength of the interlocking bonding portion 3 can be ensured. Furthermore, a common rear grip preform 10a can be used to accommodate fishing rods 1 of various sizes that are interlocked and bonded, thus eliminating the need for individual preforms corresponding to each fishing rod with different outer diameters.

[0040] Furthermore, the inner diameter adjustment layer 5 of the rear grip preform 10a, when viewed circumferentially, is formed using one or more reinforcing fiber prepreg sheets that are wound at least once. Therefore, since no multiple patterns are needed to form layers of arbitrary wall thickness, not only is the effort required for pattern layering eliminated, but there is also no localized overlap of patterns during winding, resulting in a finished product with uniform physical properties.

[0041] Furthermore, the inner diameter adjustment layer 5 of the rear handle preform 10a, when viewed circumferentially, is formed by multiple turns of a single piece of plain or twill fabric. Reinforcing fibers from the plain or twill fabric can also be wound, with the mesh intersecting obliquely within a range of 20 to 70 degrees relative to the circumference of the rear handle preform. Based on this configuration, since layers of arbitrary wall thickness can be formed without using multiple patterns, not only is the effort of pattern layering work eliminated, but also, during winding, there is no localized overlap between patterns, thus resulting in a finished product with uniform physical properties.

[0042] In addition, such as Figure 4 As shown, the innermost layer 4, the body layer 6, and the outermost layer 7 of the rear grip preform 10a, when viewed in the circumferential direction, are formed of two or more reinforcing fiber prepreg sheets, each consisting of a circumferential layer, and are configured not to hinder the expansion (stretching) of the inner diameter adjustment layer 5.

[0043] like Figure 6 As shown, a portion of the innermost layer 4 of the rear grip preform 10a is formed to overlap with the inner diameter adjustment layer 5 in the axial direction of the rear grip preform 10a. According to this configuration, since the end of the inner diameter adjustment layer 5 is covered by a continuous preform, the stacking steps are mitigated, the top pressure of the inner pressure tube is reduced during internal pressure forming, sufficient forming pressure is applied to the preform, and a rear grip 8 of stable quality can be formed.

[0044] In addition, such as Figure 6 As shown, a portion of the innermost layer 4 of the rear grip preform 10a is formed on the inner surface of the body layer 6. According to this configuration, since the end of the inner diameter adjustment layer 5 is covered by a continuous preform, the stacking steps can be mitigated, the top pressure of the inner pressure tube can be reduced during internal pressure forming, the forming pressure can be fully applied to the preform, and a rear grip 8 with more stable quality can be formed.

[0045] Furthermore, since the body portion 8 of the rear grip preform 10a is formed by extending the innermost layer 4, the body layer 6, and the outermost layer 7, it is easy to obtain a stable quality pattern configuration and any rigidity.

[0046] Next, refer to Figure 7 The preform 9a (hereinafter referred to as the reel holder preform 9a) used to form the reel holder for fishing rods will be described. Figure 7 (a) shows a perspective view of the preform 9a of the winding reel holder. Figure 7(b) A front view of the reel holder preform 9a is shown. Furthermore, since the internal structure (layered structure) of the reel holder preform 9a is the same as the internal structure of the rear grip preform 10a, please refer to... Figure 3 And its explanation.

[0047] The reel holder preform 9a has a body portion 8, and a cylindrical fitting and bonding portion 3 for fitting and bonding the rod body 2 at one or both ends of the body portion 8. This is used to form the reel holder 9 by internal pressure molding. The preform fitting and bonding portion 3 has an innermost layer 4, an inner diameter adjustment layer 5, a body layer 6, and an outermost layer 7, all of which are reinforced fiber resin layers. According to the reel holder preform 9a formed by the above configuration, during internal pressure molding, the reinforcing fibers of the inner diameter adjustment layer 5 in the circumferential direction easily extend (stretch) radially outward. This minimizes the number of laminated sheets during internal pressure molding and ensures the required strength of the fitting and bonding portion 3. Furthermore, a common reel holder preform 9a can be used to fit and bond fishing rods 1 of various sizes.

[0048] Since the detailed structure of the preformed coil holder 9a is the same as the basic structure of the preformed rear grip 10a, please refer to the description of the preformed rear grip 10a for its detailed structure.

[0049] By internally pressing the preform 9a of the reel holder, similar to the preform 10a of the handle described above, a reel holder 9 with stable forming quality can be obtained.

[0050] Next, the specific method for forming the reel holder 9 and the rear grip 10 using the reel holder preform 9a and the rear grip preform 10a will be described. The reel holder preform 9a and the rear grip preform 10a are stacked on the outside of a device that applies internal pressure, such as a tube, and then installed into a mold of the desired shape. After the mold is closed using a press, internal pressure forming is performed by applying pressure inside the tube while heating, using air, liquid, or thermally expanding powder, etc. After forming, the device used in the internal pressure process is removed, resulting in a cured hollow structure (cylindrical) reel holder 9 and rear grip 10. The inner surface of the fitting and bonding portion 3 of the obtained reel holder 9 and rear grip 10 is processed and then fitted and bonded to the surface of the fishing rod 1.

[0051] The molds used in the forming process of the reel holder 9 and the rear grip 10 are multiple molds corresponding to fishing rods with various diameters. For these multiple molds, a common reel holder preform 9a and a common rear grip preform 10a can be used to form a reel holder 9 and a rear grip 10 with a specified inner diameter for the fitting and bonding portion 3. In addition, the configuration and shape other than the fitting and bonding portion 3 are almost common to the reel holder 9 and the rear grip 10. That is, since the present invention can be fitted and bonded to fishing rods with various outer diameters, a reel holder 9 and a rear grip 10 with the same shape but different diameters of the fitting and bonding portion 3 can be formed using a common preform.

[0052] Furthermore, although examples of a reel holder and a rear grip have been shown in the above embodiments as external parts that are fitted and bonded to the outer peripheral surface of the fishing rod, the present invention is not limited to this and can be applied to all cylindrical parts that are fitted and bonded to the fishing rod.

Claims

1. A preform for an external part of a fishing rod, characterized in that it is a preform for an external part that is fitted and bonded to the outer circumferential surface of a fishing rod. The preform is a cylindrical body, manufactured by internal pressure forming and used as an external part. It has a main body, and has an inserting and adhesive part on one or both ends of the main body that fits and adheres to the outer peripheral surface of the fishing rod. In the main body, the fitting and adhesive portion is composed of an innermost layer, an inner diameter adjustment layer, a main body layer, and an outermost layer; the portion other than the fitting and adhesive portion is composed of the innermost layer, the main body layer, and the outermost layer. The innermost layer, the inner diameter adjustment layer, the body layer, and the outermost layer are all reinforced fiber resin layers. The reinforcing fibers of the inner diameter adjustment layer are oriented such that they are intersected at an angle of 20 to 70 degrees relative to the circumference of the preform.

2. The preform for the external part of the fishing rod according to claim 1, characterized in that, The innermost layer, the body layer, and the outermost layer, when viewed circumferentially, are formed by two or more reinforcing fiber prepreg films, each wrapped around the other once.

3. The preform for the external part of the fishing rod according to claim 1, characterized in that, The inner diameter adjustment layer is formed using one or more pieces of reinforced fiber prepreg film that are formed in a manner that, when viewed in the circumferential direction, wraps around the perimeter at least once.

4. The preform for the external part of the fishing rod according to claim 1, characterized in that, The inner diameter adjustment layer, when viewed in the circumferential direction, is formed by multiple turns of a plain weave or twill fabric. The reinforcing fibers of the plain weave or twill fabric are wound and the mesh is diagonally crossed in the range of 20 to 70 degrees relative to the circumference of the preform.

5. The preform for the external part of the fishing rod according to claim 1, characterized in that, A portion of the innermost layer is formed to overlap the inner diameter adjustment layer in the axial direction of the preform.

6. The preform for the external part of the fishing rod according to claim 1, characterized in that, A portion of the innermost layer is formed on the inner surface of the body layer.

7. The preform for the external part of the fishing rod according to claim 1, characterized in that, The main body portion, except for the interlocking adhesive portion, is formed by extending the innermost layer, the main body layer, and the outermost layer.

8. The preform for the external part of the fishing rod according to claim 1, characterized in that, The external component is a fishing rod handle or a fishing rod reel holder.

9. A rear grip for a fishing rod, characterized in that, The fishing rod rear grip is formed by internal pressure forming of the external part of the fishing rod as described in any one of claims 1 to 7 using a pre-formed blank.

10. A reel holder for a fishing rod, characterized in that, The fishing rod reel holder is formed by internal pressure forming of a preform of the fishing rod external part as described in any one of claims 1 to 7.

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