CN112438237A

CN112438237A - Fishing rod

Info

Publication number: CN112438237A
Application number: CN202010886173.3A
Authority: CN
Inventors: 神纳芳行; 松本圣比谷
Original assignee: Shimano Inc
Current assignee: Shimano Inc
Priority date: 2019-08-29
Filing date: 2020-08-28
Publication date: 2021-03-05
Anticipated expiration: 2040-08-28
Also published as: CN112438237B; JP2021029211A; JP7290514B2

Abstract

The invention provides a cheap fishing rod which can reliably fix a fishing line guide piece on a fishing rod body through a simple installation structure. The fishing rod (10) is provided with a fishing rod body (11) and a plurality of fishing line guides (13-20). Each of the fishing line guides (13-20) has a leg (25), and the leg (25) is fixed to the fishing rod body (11) by a leg fixing section (26). The foot fixing portion (26) is made of thermoplastic resin, and a plurality of ribs (32) are formed on the outer peripheral surface (31). The ribs (32) are adjacent in the front-rear direction (29). The melted thermoplastic resin is injected linearly, and the resin surrounds the leg (25) together with the fishing rod body (11). The hardened resin firmly fixes the leg (25) to the fishing rod body (11).

Description

Fishing rod

Technical Field

The present invention relates to a structure of a fishing rod provided with a fishing line guide, and more particularly, to a structure for attaching a fishing line guide.

Background

A fishing rod to which a fishing line reel can be attached is provided with a plurality of fishing line guides. Generally, a fishing line guide has a guide ring through which a fishing line is inserted and a guide frame that holds the guide ring. The guide frame has a leg fixed to the fishing rod body, and the leg is fixed to the fishing rod body by, for example, winding a cotton thread. Further, resin is applied from above the cotton thread to complete the fixing portion of the foot (see, for example, patent document 1). As the resin to be applied from above the cotton thread, for example, an ultraviolet curable resin composed of an epoxy resin, a urethane resin, a prepolymer, a monomer, a photopolymerization initiator, an additive, and the like is used (for example, see patent document 2).

In the method for fixing the leg disclosed in patent document 1, although the cotton thread is tightly wound around the leg of the guide frame, skill is generally required for the work, and as a result, the manufacturing cost of the fishing rod increases. Further, when the resin is applied from above the cotton thread, the manufacturing cost further increases. Therefore, instead of fixing the legs with the cotton thread, a method of fixing the legs with a resin base (a resin シート) has also been proposed (for example, see patent document 3). That is, for example, the leg of the guide frame is positioned at a predetermined position of the fishing rod body by a prepreg seat (プリプレグシート) impregnated with carbon fiber with resin, and the leg is fixed to the fishing rod body by heat treatment. In this method, the guide frame is simply fixed to the fishing rod body.

Patent document 1: japanese patent laid-open publication No. 2018-157769.

Patent document 2: japanese patent laid-open No. 2006-34228.

Patent document 3: japanese patent laid-open No. 2018-113926.

However, in the case of using the prepreg seat as described above, even if the work of fixing the guide frame to the fishing rod body is somewhat simplified as compared with the winding of the cotton thread, the work of winding the prepreg seat is still not easy. Furthermore, the prepreg seat is generally expensive, and requires a heat treatment process for hardening the seat, and as a result, it is difficult to reduce the cost of the fishing rod as a product.

Disclosure of Invention

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an inexpensive fishing rod in which a fishing line guide is reliably fixed to a fishing rod body by a simple attachment structure.

(1) The fishing rod of the present invention comprises a fishing rod body, a fishing line guide having a leg abutting against a predetermined portion of the fishing rod body, and a leg fixing portion made of thermoplastic resin which is cured by surrounding the fishing rod body and the leg in a state where the leg abuts against the predetermined portion.

According to this aspect, the leg of the fishing line guide is disposed at a predetermined position of the fishing rod body. The foot fixing part fixes the foot to the fishing rod body. The foot fixing portion is made of a thermoplastic resin, and therefore, is easily softened by being heated. Therefore, the leg and the fishing rod body are surrounded by the softened thermoplastic resin and cooled in this state, whereby the leg is easily and firmly fixed to the fishing rod body.

(2) Preferably, a convex strip extending spirally in the circumferential direction of the fishing rod body is formed on the outer circumferential surface of the foot fixing portion.

According to this configuration, the rigidity of the leg fixing portion is improved, and the leg is more firmly fixed to the fishing rod main body.

(3) Preferably, the foot fixing portion has a 1 st surrounding portion and a 2 nd surrounding portion adjacent to each other in a longitudinal direction of the fishing rod body, and both portions are fused to each other.

According to this configuration, since the foot fixing portion is structurally divided into two parts (the 1 st surrounding part and the 2 nd surrounding part) in the longitudinal direction, it is possible to optimally design the strength of the foot fixing portion in accordance with the external force expected to be applied to the foot.

(4) The 1 st and 2 nd surrounding portions may be formed of a linear thermoplastic resin injected in different linear diameters.

In this case, the mechanical strength of the 1 st and 2 nd surrounding portions is adjusted. Therefore, the mechanical strength of the foot fixing portion is easily improved at a portion of the foot fixing portion where an external force is large against the foot load.

(5) The 1 st and 2 nd surrounding portions may be formed of a thermoplastic resin injected in a single linear shape.

In this case, the 1 st and 2 nd surrounding portions are simply formed by the spirally wound thermoplastic resin. Therefore, the leg fixing portion is more simply and inexpensively configured.

(6) The 1 st and 2 nd surrounding portions may be made of different thermoplastic resins.

In this case, the degree of freedom in designing the mechanical strength of the 1 st and 2 nd surrounding portions is increased. Therefore, the strength can be designed finely according to the load mode of the external force to the foot fixing portion.

(7) Preferably, the foot fixing portion has a 3 rd surrounding portion and a 4 th surrounding portion adjacent to each other in a radial direction of the fishing rod body, and the two portions are fused to each other.

According to this configuration, the thermoplastic resin is arranged to overlap in the radial direction of the fishing rod, and the leg fixing portion is formed. Therefore, the leg is firmly fixed to the fishing rod body in a state of being wound several layers by the thermoplastic resin.

(8) The 3 rd surrounding portion and the 4 th surrounding portion may be formed of a thermoplastic resin injected in a linear shape having different linear diameters.

In this case, the mechanical strength of the 3 rd and 4 th surrounding portions is adjusted. Therefore, the mechanical strength of the foot fixing portion is easily improved with respect to the portion of the foot fixing portion to which the large external force is applied.

(9) The 3 rd surrounding portion and the 4 th surrounding portion may be formed of thermoplastic resin injected in a single linear shape.

In this case, the 1 st and 2 nd surrounding portions are simply formed by the thermoplastic resin being spirally wound. Therefore, the leg fixing portion is more simply and inexpensively configured.

(10) The 3 rd surrounding portion and the 4 th surrounding portion may be made of different thermoplastic resins.

Effects of the invention

According to the present invention, since the fishing line guide is firmly attached to the fishing rod body with a simple structure, the manufacturing cost of the fishing rod is reduced.

Drawings

Fig. 1 is a front view of a fishing rod 10 according to an embodiment of the present invention.

Fig. 2 is an enlarged sectional view of a main part showing a structure for attaching the fishing line guide 15 of the fishing rod 10.

Fig. 3 is an enlarged sectional view of an essential part showing an attachment structure of a fishing line guide 15 according to a modification of the embodiment of the present invention.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings as appropriate. The embodiment is not limited to the embodiment of the fishing rod of the present invention, and obviously, the embodiment may be changed within a range not changing the gist of the present invention.

Fig. 1 is a front view of a fishing rod according to an embodiment of the present invention.

The fishing rod 10 includes a fishing rod body 11, a handle 12 supporting a rear end portion thereof and detachably holding a fishing line reel, not shown, and a plurality of fishing line guides 13 to 20 provided on the fishing rod body 11. The handle 12 includes a reel seat 21, and a fishing reel, not shown, is fixed to the reel seat 21.

In the present embodiment, the fishing rod body 11 is formed of a single rod-shaped member, and is inserted from the front to the rear (from left to right in the drawing) into the handle 12. The fishing rod body 11 is formed by known points. That is, a rod tube having a cylindrical shape is fired by cutting a carbon fiber-reinforced resin (prepreg) into a predetermined shape, winding the cut rod tube cylindrically, and then performing heat treatment. In the present embodiment, the fishing rod body 11 is constructed in a so-called one-piece type, but the present invention is not limited to the fishing rod body 11 of the above specification, and is also applicable to a type in which the fishing rod body 11 is constructed by connecting a plurality of rod pipes.

As shown in the figure, fishing line guides 13 to 20 are attached to predetermined portions of a fishing rod body 11 and arranged at predetermined intervals in the front-rear direction. The positions where the fishing line guides 13 to 20 are attached are determined according to the condition of the fishing rod body 11 (the bending curve formed by the fishing rod body 11 when a bending moment acts). The fishing line guide 20 is called a top guide, and is provided at the tip of the fishing rod body 11. The fishing line reel is fixed to the reel seat 21, and fishing line discharged from the fishing line reel is inserted in order into the fishing line guides 13 to 20.

The fishing rod 10 of the present embodiment is characterized by the mounting structure of each fishing line guide 13-20. Specifically, as will be described in detail later, the legs 25 of the fishing line guides 13 to 20 are fixed to the fishing rod body 11 via a cured thermoplastic resin.

Fig. 2 is an enlarged sectional view of a main part showing a mounting structure of the fishing line guide 15.

The fishing line guide 15 is a known structure, and includes a guide frame 22 and a guide ring 23. The guide ring 23 is formed in an annular shape in the present embodiment, and has a line insertion hole through which a fishing line is inserted. However, the outer shape of the guide ring 23 is not particularly limited, and may be an oval shape, an oblong shape, or the like as long as the wire insertion hole is provided. The guide ring 23 is made of various hard materials having excellent wear resistance, and typically, ceramics represented by SiC (silicon carbide) or various metal materials are used. As the metal material, for example, a titanium alloy is suitable.

The guide frame 22 is of a known structure and is made of resin or metal. The resin is typically a reinforced fiber-impregnated resin such as carbon fiber or glass fiber, and as the metal, a titanium alloy, a stainless alloy, an aluminum alloy, or the like can be used. The guide frame 22 is formed in an L-shape in the present embodiment, and includes a ring attachment portion 24 and legs 25. The leg 25 is disposed at the predetermined position on the outer peripheral surface of the fishing rod body 11 and fixed by means of a key described later.

The one-dot chain line 30 in the figure indicates the center axis of the fishing rod body 11. The ring attachment portion 24 is bent with respect to the leg 25 and extends in a direction away from the central axis 30 of the rod body 11 in the radial direction (upward in the drawing). The guide ring 23 is supported by the ring fitting portion 24. Specifically, the ring attachment portion 24 is formed in an annular shape (not shown), and the guide ring 23 is fitted into the ring attachment portion 24. The guide ring 23 may be bonded to the ring attachment portion 24 by an adhesive.

The leg 25 of the guide frame 22 abuts on the predetermined portion of the fishing rod body 11 and is fixed to the fishing rod body 11 via the leg fixing portion 26. The leg fixing part 26 is annular, and surrounds the leg 25 together with the fishing rod body 11. The foot fixing portion 26 is made of thermoplastic resin. The heated and melted thermoplastic resin surrounds the leg 25 and the fishing rod body 11, and is cooled and hardened in this state, thereby fixing the leg 25 to the fishing rod body 11. Typically, Polyamide (PA) resin, acrylonitrile-butadiene-styrene (ABS) resin, acrylonitrile-styrene-acrylate (ASA) resin, polylactic acid (PLA) resin, Polycarbonate (PC) resin, Polyetherimide (PEI) resin, and the like can be used as the resin constituting the foot fixing portion 26.

As shown in the figure, the outer peripheral surface 31 of the foot fixing portion 26 has a wave shape continuous in the axial direction (the direction of the central axis 30). That is, ribs 32 extending in the circumferential direction of the fishing rod body 11 are provided in parallel in the axial direction 30 on the outer peripheral surface 31 of the foot fixing portion 26. In other words, a convex strip (rib 32) extending spirally along the axial direction 30 is formed on the outer peripheral surface 31 of the foot fixing portion 26. The effect of the formation of the rib 32 will be described later.

In the present embodiment, the foot fixing portion 26 includes, as shown in the drawing, an inner layer 33 (corresponding to the "3 rd surrounding portion" in the claims) and an outer layer 34 (corresponding to the "4 th surrounding portion" in the claims). The ribs 32 are formed on the outer surface of the outer layer 34. The inner layer 33 and the outer layer 34 are stacked adjacent to each other in the radial direction of the rod body 11, and a boundary line 35 appears at the boundary therebetween in the figure. However, the foot fixing portion 26 may be formed of a single layer.

The thickness 27 of the leg fixing portion 26 is set to 0.4mm in the present embodiment, but the design can be changed as appropriate within the range of 0.1mm to 2.0 mm. The dimension 28 of the leg fixing portion 26 in the front-rear direction 29 is set to 0.4mm in the present embodiment, but is not particularly limited as long as it covers the entire leg 25.

The leg fixing portion 26 is formed by 3D printing using Fused Deposition Modeling (FDM). However, the foot fixing portion 26 may also be formed by a known method. In the present embodiment, the hot-melt thermoplastic resin is injected linearly, for example, by an adhesive gun, and is spirally wound around the leg 25 and the fishing rod body 11. The thermoplastic resin surrounding the leg 25 and the fishing rod body 11 in this way is cooled and hardened to become a leg fixing portion 26 for fixing the leg 25 to the fishing rod body 11.

In the present embodiment, the structure of the fishing line guide 15 and the attachment points to the fishing rod body 11 have been described by way of example, but the attachment points are common to the fishing line guides 13 to 20.

In the fishing rod 10 of the present exemplary embodiment, the legs 25 of the fishing line guides 13 to 20 are surrounded only by the molten thermoplastic resin together with the fishing rod body 11, and are extremely easily and quickly firmly fixed to a predetermined portion of the fishing rod body 11. Therefore, the manufacturing cost of the fishing rod 10 is significantly reduced compared to the conventional one.

In the present embodiment, a rib 32 is formed on the outer peripheral surface of the foot fixing portion 26. The rib 32 may be formed by the fused deposition molding, or may be formed by spirally winding a linear thermoplastic resin injected from an adhesive gun so as to surround the leg 25 and the fishing rod body 11. By forming the rib 32, the rigidity of the leg fixing portion 26 is improved. Therefore, the leg 25 is more firmly fixed to the fishing rod body 11. In the present embodiment, a single linear thermoplastic resin is ejected from the adhesive gun. This simplifies the molding operation of the leg fixing portion 26, and facilitates the formation of the rib 32. However, a plurality of linear thermoplastic resins may be ejected from the adhesive gun. The rib 32 may not be formed.

In the present embodiment, the foot fixing portion 26 includes the inner layer 33 and the outer layer 34, and the boundary line 35 appears in the cross-sectional structure thereof. That is, in the present embodiment, the inner layer 33 is formed by the thermoplastic resin, and then the outer layer 34 is formed to overlap the inner layer 33. The inner layer 33 and the outer layer 34 are formed by a simple operation as described above, and they are fused with each other and cooled to harden. The outer layer 34 may be formed after the inner layer 33 is cured. Thus, the thermoplastic resin is arranged to overlap in the radial direction, and the leg 25 is more firmly fixed to the fishing rod body 11.

In the present embodiment, the foot fixing portion 26 has a two-layer structure, but a multi-layer structure may be formed by further stacking resin layers on the outer layer 34. In this case, the legs 25 are wound several layers of thermoplastic resin, and the mechanical strength of the leg fixing portions 26 is further improved.

In the present embodiment, the diameter of the thermoplastic resin injected from the adhesive gun is constant, and is set to 0.1mm to 2.0mm, for example. However, the diameter of the thermoplastic resin injected to form the inner layer 33 may be different from the diameter of the thermoplastic resin injected to form the outer layer 34. In this case, the mechanical strength of the inner layer 33 and the outer layer 34 is adjusted. Therefore, the leg fixing portion 26 can be designed to have an appropriate strength according to the load on the leg 25 assumed in actual fishing.

In the present embodiment, the thermoplastic resin forming the inner layer 33 is the same as the thermoplastic resin forming the outer layer 34, but they may be different from each other. For example, PA may be used for the inner layer 33 and ABS may be used for the outer layer 34, or vice versa. In this case, the degree of fusion of the inner layer 33 and the outer layer 34 is adjusted, and the degree of freedom in designing the mechanical strength becomes greater. Therefore, the strength can be designed finely according to the load mode of the external force applied to the leg fixing portion 26.

Fig. 3 is an enlarged sectional view of an essential part showing an attachment structure of the fishing line guide 15 according to a modification of the embodiment.

The structure for attaching the fishing line guide 15 of the present modification differs from the structure for attaching the fishing line guide 15 of the foregoing embodiment in that (a) the structure of the present modification is a single-layer structure as opposed to the structure of the foot fixing portion 26 of the foregoing embodiment being a two-layer structure, and (b) the foot fixing portion 45 includes a front surrounding portion 43 (corresponding to the "1 st surrounding portion" of the claims) and a rear surrounding portion 44 (corresponding to the "2 nd surrounding portion" of the claims). Other structures are the same as those of the above-described embodiment.

The foot fixing portion 45 is formed in the same manner as in the above-described embodiment, and for example, a molten linear thermoplastic resin is injected from an adhesive gun, and the linear resin is spirally wound so as to surround the foot 25 and the fishing rod body 11. In this modification, the leg fixing portion 45 having a single-layer structure is formed by the linear resin injected from the adhesive gun as described above.

The front surrounding portion 43 and the rear surrounding portion 44 are fused and are contiguous to each other in the longitudinal direction (the front-rear direction 29) of the fishing rod 10. The dimension 46 of the front surrounding portion 43 in the front-rear direction 29 is set to 1mm to 20mm in the present modification, and the dimension 47 of the rear surrounding portion 44 in the front-rear direction is set to 1mm to 25 mm. The linear resin is wound around the rear end side or the front end side of the leg 25. When the linear resin is wound around the rear end side of the leg 25, the rear surrounding portion 44 is formed first, and the front surrounding portion 43 is formed continuously therewith. When the linear resin is wound around the distal end of the leg 25, the front surrounding portion 43 is formed first, and the rear surrounding portion 44 is formed continuously therewith. In this case, the front surrounding portion 43 and the rear surrounding portion 44 are continuously formed by a single linear resin.

In this modification, since the leg fixing portion 45 has a single-layer structure, the structure is simplified, and as a result, the manufacturing cost of the fishing rod 10 is further reduced. Further, since the foot fixing portion 45 includes two portions (the front surrounding portion 43 and the rear surrounding portion 44) adjacent to each other in the front-rear direction 29, the strength of the foot fixing portion 45 is optimally designed in accordance with the magnitude of the external force and the bending moment expected to be applied to the foot 25. For example, in actual fishing, a large external force is generally applied to the front portion (portion corresponding to the dimension 46) of the foot 25. Therefore, it is easy to design the front surrounding portion 43 so as to improve the mechanical strength, even if the dimension 46 is large.

In particular, in order to improve the mechanical strength of the cowl-surrounding portion 43 of the leg fixing portion 45, the line diameter of the injected resin may be changed when the cowl-surrounding portion 43 is formed. That is, a large-diameter linear resin may be wound around the front portion of the leg 25, and a small-diameter linear resin may be wound around the rear portion of the leg 25. Thus, the front portion of the leg 25 on which a large external force acts is fixed by the cowl portion 43 having excellent strength, and the rear portion of the leg 25 on which a small external force acts is fixed by the rear cowl portion 44 which is structurally simplified. As a result, the degree of freedom in designing the strength of the leg fixing portion 45 is improved, and an optimum design without waste can be made.

In order to improve the mechanical strength of the cowl-surrounding portion 43 of the leg fixing portion 45, the type of resin to be injected may be changed when the cowl-surrounding portion 43 is formed. That is, a thermoplastic resin having excellent strength may be wound around the front portion of the foot 25, and another thermoplastic resin may be wound around the rear portion of the foot 25. In this case, the front side portion of the leg 25 to which a large external force acts is also firmly fixed by the cowl portion 43. As a result, the degree of freedom in designing the strength of the leg fixing portion 45 is improved, and the optimum design without waste is achieved.

Description of the reference numerals

10, seed and fishing rod

11 seed, seed and fishing rod main body

Leading parts for fishing lines

Leads for fishing lines

15 seed, fishing line guide

Leading parts for fishing lines

17, seeding, and fishing line guides

Leading parts for fishing lines

Leads for fishing lines

22 seed, seed and leading frame

Leading rings of 23 seed, seed and seed

Seeds, both seeds and both tails

Fixed part for seeds, trees and roots

Seeds, and peripheral surfaces

Seeds, seedings and seeds

Seed, seed and internal layer

Seed, seed and outside seed

35 seed, seed and boundary

43 seed, and front wall winding part

44 seed, seed and seed surrounding part

45 seeds, seeding and seeding foot fixing parts.

Claims

1. A fishing rod is characterized in that,

comprises a fishing rod body, a fishing line guide, and a foot fixing part,

the fishing line guide has a foot abutting against a predetermined portion of the fishing rod body,

the foot fixing part is made of a thermoplastic resin which is cured so as to surround the fishing rod body and the foot in a state where the foot is in contact with the predetermined portion.

2. The fishing rod of claim 1,

a convex strip extending spirally in the circumferential direction of the fishing rod body is formed on the outer circumferential surface of the foot fixing portion.

3. The fishing rod of claim 1,

the foot fixing part has a 1 st surrounding part and a 2 nd surrounding part adjacent to each other in the longitudinal direction of the fishing rod body, and both are fused with each other.

4. The fishing rod of claim 3,

the 1 st and 2 nd surrounding portions are made of a thermoplastic resin injected in a linear shape having different linear diameters.

5. A fishing rod according to claim 3 or 4,

the 1 st and 2 nd surrounding portions are formed of a thermoplastic resin injected in a single line.

6. A fishing rod according to claim 3 or 4,

the 1 st and 2 nd surrounding portions are made of different thermoplastic resins.

7. The fishing rod of any of claims 1 to 6,

the foot fixing part has a 3 rd surrounding part and a 4 th surrounding part adjacent to each other in the radial direction of the fishing rod body, and the two parts are fused with each other.

8. The fishing rod of claim 7,

the 3 rd surrounding portion and the 4 th surrounding portion are formed of a thermoplastic resin injected in a linear shape having different linear diameters.

9. A fishing rod according to claim 7 or 8,

the 3 rd surrounding portion and the 4 th surrounding portion are formed of thermoplastic resin injected in one line.

10. A fishing rod according to claim 7 or 8,

the 3 rd surrounding portion and the 4 th surrounding portion are made of different thermoplastic resins.