WO2024047923A1 - Fishing rod and method for forming joint structure - Google Patents

Fishing rod and method for forming joint structure Download PDF

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Publication number
WO2024047923A1
WO2024047923A1 PCT/JP2023/014816 JP2023014816W WO2024047923A1 WO 2024047923 A1 WO2024047923 A1 WO 2024047923A1 JP 2023014816 W JP2023014816 W JP 2023014816W WO 2024047923 A1 WO2024047923 A1 WO 2024047923A1
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Prior art keywords
joint
rod
diameter
elastic member
circumferential surface
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PCT/JP2023/014816
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French (fr)
Japanese (ja)
Inventor
孝洋 松尾
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グローブライド株式会社
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Publication of WO2024047923A1 publication Critical patent/WO2024047923A1/en

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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K87/00—Fishing rods
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K87/00—Fishing rods
    • A01K87/02—Connecting devices for parts of the rods

Definitions

  • the present invention relates to a fishing rod characterized by a joint structure between adjacent large-diameter rod rods and small-diameter rod rods, and a method for forming the joint structure.
  • fishing rods equipped with a plurality of rod rods have adjacent rod rods connected to each other using a joint structure.
  • joint structures the parallel joint type, reverse parallel joint type, spigot type, and swing-out type are known, and the overall length of the fishing rod can be lengthened by making the joint state, and it is possible to release the joint state. This allows you to shorten the length of the fishing rod.
  • the joint structure disclosed in Patent Document 1 mentioned above has an elastic member attached to the end of the small diameter rod, but since the tolerance of the elastic member is on the order of 1/10 mm, it is difficult to use it in the joint structure. , dimension control cannot be performed with high precision. Generally, in a side-by-side type joint structure, if the clearance between the outer peripheral surface of the small diameter rod and the inner peripheral surface of the large diameter rod is 0.02 mm or more, rattling and squealing will occur. With the above-mentioned tolerances of the elastic member, it is difficult to control the dimensions so that such rattling or squealing does not occur. In other words, due to the tolerances used when forming the elastic member, it is not possible to control the dimensions of the joint part to the extent that it does not cause any problems with the product. In addition, the cost also increases.
  • the present invention has been made by focusing on the above-mentioned problems, and reduces rattling and squealing at the joint between a large diameter rod (large diameter part) and a small diameter rod (small diameter part), and reduces the size of the rod. It is an object of the present invention to provide a fishing rod having a joint structure with high precision, and a method for forming such a joint structure.
  • the fishing rod according to the present invention has a joint structure in which the outer peripheral surface of the small diameter part is inserted into the inner peripheral surface of the large diameter part to join the two, and
  • the structure includes a straight mating part and an elastic member press-fitted into the end of the small diameter part and having a joint part protruding in the axial and radial directions, and the elastic member has a joint part that is press-fitted into the end of the small diameter part and protrudes in the axial and radial directions.
  • the outer circumferential surface of the joint part is integrally processed in a centerless manner, and the outer peripheral surface of the joint part is characterized in that it has a larger diameter of 0.03 mm to 0.06 mm than the centerless process dimension.
  • the outer circumferential surface of the small diameter portion and the outer circumferential surface of the joint portion (flange) of the elastic member press-fitted into the small diameter portion are integrally processed in a centerless manner.
  • the joint part of the elastic member receives the force of being stretched in the axial direction due to the pressing force during processing, and is machined so that the outer circumferential surface is the same as the outer circumferential surface of the small diameter part. be done.
  • the joint portion which has been extended in the axial direction, begins to expand in the radial direction while attempting to return to its original state due to elastic force.
  • the diameter can be made larger by ⁇ 0.03mm to ⁇ 0.06mm compared to the centerless machining dimensions (dimensions of the outer circumferential surface of the small diameter part), so precision can be achieved on the order of 1/100mm.
  • This allows accurate dimensional control and reduces rattling and squealing when joining the small diameter part and the large diameter part. Further, since it is possible to perform precise dimensional control simply by centerless processing, post-processing etc. can be suppressed, and processing costs can be reduced.
  • the present invention also provides a method for forming a joint structure in which the outer circumferential surface of a small diameter portion of an adjacent rod rod is inserted into the inner circumferential surface of a large diameter portion of a plurality of rod rods constituting a fishing rod to join the two rods.
  • This forming method includes an elastic member bonding step of press-fitting and bonding an elastic member having a joint portion protruding in the axial and radial directions to the end of the small diameter portion; and a surface treatment step of performing centerless processing on the joint portion projecting in the axial direction to a predetermined outer diameter dimension.
  • FIG. 1 is a diagram showing main parts of an embodiment of a fishing rod according to the present invention.
  • FIG. 2 is a diagram schematically showing the end of the small diameter portion (small diameter rod rod) of the joint structure of the fishing rod shown in FIG. 1 and the elastic member press-fitted into the opening of the end (before centerless processing).
  • (a) to (c) are diagrams sequentially explaining processing steps of the joint portion shown in FIG. 2.
  • (a) is a diagram showing the relationship between the elastic member shown in FIG.
  • (b) is a diagram showing a state in which the elastic member is adhesively fixed to the small-diameter rod.
  • FIG. 1 is a diagram showing the main parts of an embodiment of a fishing rod according to the present invention.
  • the fishing rod 1 according to the present embodiment has a structure in which a plurality of rod rods are joined in parallel, and each of the main rod rods 3, the middle rod rod 5, and the tip rod rod 7 is connected to each other. In the end region P, it is joined by a joining structure 10.
  • the number of middle rods is not limited, and a two-joint configuration in which the tip rod 7 is directly connected to the main rod 3 may be used.
  • the fishing rod may have a structure in which a reel is attached and a fishing line guide for guiding the fishing line is attached.
  • the main rod 3 and the middle rod 5 are formed of tubular bodies made of fiber-reinforced resin, such as reinforced fibers (mainly carbon fibers, glass fibers, etc.) impregnated with synthetic resin such as epoxy resin.
  • the fiber-reinforced resin prepreg prepreg sheet
  • the tip rod 7, like the main rod 3 and the middle rod 5, may be formed as a tubular body, a solid body, or a tubular body and a solid body.
  • FIG. 2 is a diagram schematically showing the joint structure on the middle rod 5 side of the joint structure 10 between the adjacent main rod 3 and the middle rod 5, and FIGS. c) is a diagram sequentially explaining the processing steps of the joint portion shown in FIG. 2;
  • the main rod and the middle rod are joined adjacently to form a tapered structure, so in the following explanation, the main rod 3 will be a large diameter rod, and the middle rod 5 will be a small diameter rod. Also called a rod.
  • a parallel joint type is used as the joint structure 10. Therefore, the end of the small-diameter rod 5 (also referred to as the small-diameter portion 5A) becomes the male side, and is inserted and fitted into the female side, which is the end of the large-diameter rod 3 (also referred to as the large-diameter portion 3A).
  • Ru That is, the large diameter portion 3A is formed into a cylindrical shape, and has a structure in which the outer circumferential surface 5a of the small diameter portion 5A is inserted into the inner circumferential surface 3a of the large diameter portion 3A to join the two (see FIG. 3(b)).
  • the mating length of the mating structure 10 in the axial direction is indicated by the symbol L).
  • the large-diameter rod 3 and the small-diameter rod 5 that are joined adjacent to each other are formed by winding a prepreg sheet, and at least the portion of the combined length L is provided with reinforcing material.
  • the prepreg sheet is wound.
  • the prepreg sheets constituting each rod rod may have reinforcing fibers oriented in the axial direction, circumferential direction, oblique direction, or knitted into a woven fabric. , these are used in combination as appropriate.
  • the joint structure 10 includes a straight joint portion 10A within the range of the joint length L in the axial direction.
  • the axial alignment length of the straight alignment portion 10A is indicated by the symbol L1.
  • the small diameter portion 5A and the large diameter portion 3A are joined on both sides of the straight joining portion 10A in the axial direction.
  • a gap G is created between the outer circumferential surface 5a of the small diameter rod 5 and the inner circumferential surface 3a of the large diameter rod 3 at the time of joining, and a gap G is created on both sides in the axial direction.
  • the straight joint part 10A in the joint structure and performing joints at two points (point A, point B) on both sides in the axial direction, a taper is formed in the region of the straight joint part and the joint is made.
  • the joint force can be improved compared to a joint in one place.
  • the joint structure may include only point A where the elastic member is provided.
  • the joint structure at the point A is configured as follows.
  • An elastic member (rubber plug) 20 is press-fitted into the end opening 5b of the small-diameter portion 5A of the small-diameter rod 5 and fixed with adhesive.
  • the elastic member 20 is integrally molded by injecting silicone, nitrile rubber (NBR), etc. into a mold, and includes a solid cylindrical portion 20A and an end thereof that protrudes in the radial direction.
  • a joint portion (flange) 20B is provided. This joint portion 20B protrudes in the axial direction when the elastic member is bonded to the end opening 5b of the small diameter portion 5A.
  • the hardness depends on the material, but if it is too soft, sufficient joint force will not be exerted at the joint, and if it is too hard, it will cause a lot of resistance when joining with a large diameter rod, making it difficult to slide. Since it may become difficult to move, it is preferable to use a hardness of about 60° to 80° according to the JIS standard (JIS K 6253).
  • the cylindrical portion 20A is formed in a size that can be press-fitted into the end opening 5b of the small diameter portion 5A, and is press-fitted and fixed by applying an adhesive (elastic member bonding step; FIG. 3(a)).
  • the joint portion 20B protrudes in the axial direction when the cylindrical portion 20A is press-fitted and adhered to the inner peripheral surface of the end opening 5b of the small diameter portion 5A, and also extends in the radial direction from the opening edge 5B of the small diameter portion 5A. It is formed to a protruding size.
  • the joint portion 20B is formed such that its outer diameter D1 is larger (approximately 0.5 mm) than the outer diameter D2 of the cylindrical portion 20A (see FIG. 2).
  • the small diameter portion 5A to which the elastic member 20 is adhered and fixed is subjected to centerless processing using a known centerless processing machine so that it has a predetermined outer diameter dimension (surface treatment step; Fig. 3 (a) (see (b)).
  • the centerless processing is integrally performed on the elastic member 20 bonded to the outer circumferential surface 5a' of the small diameter portion 5A and the inner surface of the end opening 5b of the small diameter portion 5A. Therefore, the outer circumferential surface 20a' of the joint portion 20B of the elastic member 20 is also cut integrally.
  • This centerless machining is performed until the outer circumferential surface 5a' of the small diameter portion 5A reaches a predetermined outer diameter D, so it is also performed until the outer circumferential surface 20a' of the joint portion 20B reaches the same outer diameter D. It happens.
  • the outer circumferential surface 20a of the joint portion 20B swells slightly in the radial direction with respect to the outer circumferential surface 5a of the small diameter portion 5A that has been processed. That is, when centerless processing is performed, the outer circumferential surface 20a of the joint portion 20B does not become the outer diameter D but slightly bulges out.
  • This bulge is formed by integrally centerless processing the outer circumferential surface 5a' of the small diameter portion 5A and the outer circumferential surface 20a' of the joint portion 20B. Specifically, the surface of the joint portion 20B is cut while receiving a force that extends in the axial direction due to the pressing force during machining, and when the centerless machining is completed, the joint extends in the axial direction. The joint portion 20B is formed by attempting to return to its original state due to its elastic force. That is, since the joint portion 20B is restricted by the opening edge 5B of the small diameter portion 5A, the joint portion 20B swells in the radial direction due to the contraction force at that time, and a bulging portion is formed.
  • the bulge of the joint portion 20B depends on the hardness, size, etc. of the elastic member 20, but is approximately ⁇ 0.03 mm to ⁇ 0.06 mm with respect to the centerless machining dimensions (dimensions of the outer peripheral surface of the small diameter portion 5A). It is easy to make the diameter larger. That is, it is possible to easily bulge (form a bulge) with a tolerance on the order of 1/100 mm. Note that when the above-described centerless processing is applied to the elastic member 20, that portion (the joint portion 20B portion) bulges in the radial direction, and the bulged surface extends straight in the axial direction.
  • the radially bulging surface can take various forms, such as expanding in diameter toward the rear end (becoming a tapered surface), depending on the configuration of the elastic member 20. There are no particular limitations on the surface shape (surface condition) of the bulge.
  • processing is also performed so that the joint is formed at the point B.
  • a taper 5C is formed at the end of the small-diameter rod 5 opposite the straight mating portion 10A so that the diameter thereof gradually increases as the outer circumferential surface 5a' moves away from the point A in the axial direction. It is possible to form such a joint.
  • the inner circumferential surface 3a of the large-diameter rod 3 is formed to have the same diameter in the axial direction. Therefore, when the small-diameter rod 5 described above is inserted into the large-diameter rod 3, the taper 5C comes into contact with the opening edge 3A of the large-diameter rod 3 to form a joint, and the rod is attached to the small-diameter rod 5.
  • the joint part 20B of the attached elastic member 20 is joined to the inner circumferential surface 3a of the large diameter rod 3, so that the joint is formed at both ends (point A, point B) of the straight joint part 10A. (See Figure 3(c)).
  • the joint structure 10 of the present embodiment described above will be explained while citing specific dimensions.
  • the inner diameter D3 is designed to be 10.00 mm and the outer diameter D is 9.95 mm. do.
  • the gap G between the two rods when they are fitted is set to 0.05 mm.
  • the inner circumferential surface 3a of the large-diameter rod 3 is formed of a metal core as described above, so the tolerance does not become large, and the inner circumferential surface 3a of the large-diameter rod 3
  • the inner diameter D3 is formed within a range of approximately 10.0 mm to 10.01 mm.
  • centerless processing is performed as described above on the outer circumferential surface 5a' of the small-diameter rod 5 shown in FIG. give
  • the outer diameter D of the outer circumferential surface 5a of the small diameter rod 5 is set as the design value and centerless processing is performed at 9.95 mm
  • the outer circumferential surface 20a' of the joint portion 20B of the elastic member 20 will be subjected to the above-described centerless processing.
  • the diameter becomes larger (bulges) by about ⁇ 0.03mm to ⁇ 0.06mm, so due to the bulge, the outer diameter d is finished in the range of 9.98mm to 10.01mm. .
  • the outer diameter d of the outer peripheral surface 20a of the joint portion 20B can be adjusted to the order of 1/100 mm. Dimensions can be managed.
  • the outer diameter d of the outer circumferential surface 20a of the joint portion 20B is finished to be 9.98 mm to 10.01 mm. becomes possible. In this way, it is possible to control the dimension so that the clearance between the outer circumferential surface of the joint part 20B and the inner circumferential surface of the large diameter rod is 0.02 mm or less. However, when both rods are fitted together, it is possible to suppress rattling and squealing at the joint without considering tolerances.
  • the dimensions of the joint portion 20B can be precisely controlled on the order of 1/100 mm, thereby reducing rattling and squealing during inspection work, etc.
  • the work process of post-processing for this purpose is suppressed, making it possible to reduce processing costs.
  • FIG. 4 is a diagram showing a second embodiment of the elastic member.
  • the elastic member 20 is not solid but hollow (cylindrical portion 20A'). In this way, by forming the portion of the elastic member 20 that is bonded to the small-diameter rod into a hollow shape, it is possible to reduce the weight of the joint structure.
  • FIGS. 5 to 7 are diagrams showing a third embodiment of the elastic member.
  • the elastic member is formed into a hollow shape (cylindrical portion 20A'), and a ring-shaped or spiral groove 21 is formed on the outer peripheral surface of the cylindrical portion 20A'. Since this groove 21 has a function as an adhesive reservoir, it is possible to improve the adhesive force between the small diameter rod 5 and the elastic member 20.
  • the length L3 of the cylindrical portion 20A' which is the axial length of the elastic member 20, and the length L4 of the joint portion 20B are preferably set as follows.
  • the axial length L3 of the cylindrical portion 20A' if it is too short, sufficient adhesive strength cannot be obtained, and if it is too long, it will affect the flexibility and increase the weight, so it should be 10.0 mm to 25 mm. It is preferable to form it in the range of 0 mm.
  • the axial length L4 of the joint portion 20B if it is too short, sufficient fitting strength cannot be obtained, and if it is too long, it will affect the slidability during jointing, so it should be 3.0 mm to 5 mm. It is preferable to form it within a range of .0 mm.
  • the axial lengths L3 and L4 should be formed according to the outer diameter D2 of the cylindrical portion 20A' (the outer diameter of the portion where no groove is formed) and the outer diameter D1 of the joint portion 20B before processing. Good. Specifically, if the outer diameter D2 of the cylindrical portion 20A' is less than 10.0 mm, L3 should be about 20.0 mm, and if the outer diameter D2 is 10.0 mm or more, L3 should be about 25.0 mm. good. Further, if the outer diameter D1 of the joint portion 20B is less than 12.0 mm, L4 may be approximately 4.0 mm, and if the outer diameter D1 is 12.0 mm or more, L4 may be approximately 5.0 mm.
  • the inner diameter D4 of the inner circumferential surface 5c of the small-diameter rod 5 is made of metal as described above. Since it is formed from a cored metal, the tolerance does not become large and is formed within a range of approximately +0.01 mm from the design value. Furthermore, as described above, the elastic member 20 is formed with a groove 21 that serves as an adhesive reservoir, and an adhesive (such as Cyanon 721) is applied thereto and press-fitted onto the inner circumferential surface of the small diameter rod 5.
  • an adhesive such as Cyanon 721
  • the outer diameter D2 of the cylindrical portion 20A' should be smaller than the inner diameter D4 of the small diameter rod 5 as a design value (approximately -0.05 mm to -0.1 mm with respect to the inner diameter D4, the smaller diameter ) is preferable. That is, as described above, although the elastic member 20 has a large tolerance (on the order of 1/10 mm), if the design value is set to a certain degree of small diameter with respect to the inner diameter D4, there will be a groove 21 that will become an adhesive reservoir. Therefore, sufficient adhesive strength can be obtained even when the actual outer diameter is small, and conversely, even when the actual outer diameter is large, the resistance during press-fitting is reduced and the elastic member 20 can be It can be press-fitted and glued into the small diameter rod 5.
  • the centerless processing as described above is performed.
  • the outer diameter d of the joint portion 20B becomes larger by about ⁇ 0.03 mm to ⁇ 0.06 mm than the outer diameter D of the outer peripheral surface of the small diameter rod 5 after processing, as described above. (See Figure 6(b)).
  • the small-diameter rod 5 to which the elastic member 20 is adhesively fixed and subjected to centerless processing is joined to the large-diameter rod 3 (see FIG. 6(a)).
  • the inner diameter D3 of the inner circumferential surface 3a of the large-diameter rod 3 has a tolerance of about 0 to 0.01 mm with respect to the design value
  • the outer diameter d of the outer circumferential surface 20a of the joint portion 20B By centerless machining, it is possible to form a clearance (approximately 0.02 mm) or less between the outer circumferential surface D of the small diameter rod and the rod that will not cause any squealing during jointing.
  • a core material 30 is press-fitted and fixed into the inner cavity 22 of the cylindrical portion 20A' of the elastic member 20 having the above-described configuration.
  • This core material 30 can be made of, for example, metal, resin, cork, etc., and can be press-fitted and bonded after centerless processing to increase the outer diameter of the joint portion 20B. That is, when the joint force is weak, it is possible to adjust the joint force by press-fitting and bonding such a core material 30.
  • press-fitting and gluing the core material 30 it becomes difficult to deform greatly when the joint is released, and the P1 part in FIG. 7 (joint part between the joint part 20B and the opening edge 5B of the small diameter rod 5) There will be no problems such as cracks or breakage of the mating parts.
  • the present invention provides an integral centerless process for forming the joint structure by integrally processing the outer peripheral surface of the rod rod and the elastic member press-fitted into the end opening of the rod rod.
  • Other configurations are not limited to the above-described embodiment and can be modified in various ways.
  • the joint structure of the present invention does not have a specific structure as long as there is a straight joining part between the small diameter part and the large diameter part. Therefore, the two rods may be joined only by the above-mentioned elastic member.
  • the size of the joint (flange) of the elastic member 20 is determined by a mold, but in order to facilitate centerless processing, the size of the joint (flange) of the elastic member 20 is 0.5 to 0.5 to It is preferable to form it as large as about 1.0 mm.
  • the fishing rod joint structure 10 according to the present invention can be applied not only to the parallel joint type described above but also to a reverse joint type and a spigot type. That is, in the reverse parallel joint type joint structure, the end of the small-diameter rod 5 becomes the large-diameter portion (female side), and the end of the large-diameter rod 3 becomes the small-diameter portion (male side).
  • the end of the small diameter rod 5 is the large diameter portion (female side)
  • the end of the large diameter rod 3 becomes the large diameter part (female side).
  • the exposed spigot becomes the small diameter part (male side).
  • the above-mentioned specific dimensions are just an example, and can be modified as appropriate depending on the type of fishing rod, the thickness of the small diameter part and the large diameter part, etc.
  • the outer diameter d of the outer peripheral surface of the joint part 20B of the elastic members 20, 20' after centerless processing is larger than the outer peripheral surface of the small diameter part (small diameter rod) (in the embodiment, ⁇ 0.03 mm ⁇
  • the diameter is 0.06 mm (large diameter)
  • the material may be selected so that the amount of bulge falls within such a range.
  • the amount of bulge is not limited to ⁇ 0.03 mm to ⁇ 0.06 mm, and can be changed as appropriate depending on the thickness and type of the fishing rod (as long as it is larger than ⁇ 0 mm). ).

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  • Environmental Sciences (AREA)
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  • Biodiversity & Conservation Biology (AREA)
  • Fishing Rods (AREA)

Abstract

Provided is a fishing rod having good dimensional accuracy, in which rattling and noise occurring at a joint portion of a large-diameter rod and a small-diameter rod are reduced. This fishing rod has a joint structure 10 in which the outer circumferential surface of a small-diameter part 5A is inserted into the inner circumferential surface of a large diameter-part 3A and the two parts are joined together. The joint structure 10 is provided with an elastic member 20 comprising a straight mating part 10A and a joint part 20B that is press-fitted into the end of the small-diameter part 5A and that protrudes in the axial direction, and the outer circumferential surface of the small-diameter part 5A and the outer circumferential surface of the joint part 20B are integrally machined in a centerless manner. The outer circumferential surface 20a of the joint part 20B is characterized by having a large diameter of φ0.03-φ0.06 mm with respect to the centerless machining dimension (diameter D of the outer circumferential surface 5a of the small-diameter rod).

Description

釣竿、及び、継合構造の形成方法Fishing rod and method for forming joint structure
　相互参照
　本出願は、日本国特許出願２０２２－１３６２７２（２０２２年８月２９日出願）に基づく優先権を主張し、その内容は参照により全体として本明細書に組み込まれる。
　本発明は、隣接する大径竿杆と小径竿杆との間の継合構造に特徴を有する釣竿、及び、継合構造の形成方法に関する。 Cross-reference This application claims priority based on Japanese Patent Application No. 2022-136272 (filed on August 29, 2022), the contents of which are incorporated herein by reference in their entirety.
The present invention relates to a fishing rod characterized by a joint structure between adjacent large-diameter rod rods and small-diameter rod rods, and a method for forming the joint structure.
　一般的に、複数本の竿杆を備えた釣竿は、隣接する竿杆同士を継合構造によって継合するようになっている。継合構造としては、並継式、逆並継式、インロー式、振出式が知られており、継合状態にすることで釣竿の全長を長くすることができ、継合状態を解除することで釣竿の仕舞寸法を短くすることができる。 In general, fishing rods equipped with a plurality of rod rods have adjacent rod rods connected to each other using a joint structure. As joint structures, the parallel joint type, reverse parallel joint type, spigot type, and swing-out type are known, and the overall length of the fishing rod can be lengthened by making the joint state, and it is possible to release the joint state. This allows you to shorten the length of the fishing rod.
　継合構造として、隣接する大径竿杆と小径竿杆の端部に、それぞれ異なるテーパ率のテーパ面を形成し、それぞれのテーパ面同士を継合させることが知られている。このような継合構造は、嵌合力が十分でなく、緩みやガタが生じ易いことがあるため、例えば、特許文献１に開示されているように、小径竿杆の端部に弾性部材（ゴム栓）を取着した継合構造が知られている。この継合構造は、弾性部材を小径竿杆の端部から軸方向に突出し、その突出部分にフランジを形成して径方向外面を大径竿杆の内面に圧接させることで、隣接する竿杆同士を継合して弛緩防止するようにしている。 As a joint structure, it is known to form tapered surfaces with different taper ratios at the ends of adjacent large-diameter rods and small-diameter rods, and to join the respective tapered surfaces to each other. In such a joint structure, the fitting force is not sufficient and loosening or play may easily occur. Therefore, for example, as disclosed in Patent Document 1, an elastic member (rubber A joint structure in which a plug (stopper) is attached is known. This joint structure projects an elastic member in the axial direction from the end of a small-diameter rod, forms a flange on the protruding portion, and presses the radially outer surface against the inner surface of a large-diameter rod, thereby connecting the adjacent rod. They are joined together to prevent loosening.
実開昭６３－１０９７６７号Utility Model No. 63-109767
　上記した特許文献１に開示された継合構造は、小径竿杆の端部に弾性部材を取着しているが、弾性部材の公差は１／１０ｍｍオーダであるため、継合構造に用いる際、寸法管理を精度よく行なうことはできない。一般的に、並継式の継合構造では、小径竿杆の外周面と大径竿杆の内周面との間のクリアランスは、０．０２ｍｍ以上になると、ガタ、鳴きが発生することから、上記した弾性部材の公差では、そのようなガタや鳴きが発生しないように寸法管理することが難しい。すなわち、弾性部材を形成する際の公差では、継合部分の寸法を、製品として問題が生じない程度にコントロールすることができないため、検品した際、後加工が必要になる等、製造の手間がかかると共にコストも高くなってしまう。 The joint structure disclosed in Patent Document 1 mentioned above has an elastic member attached to the end of the small diameter rod, but since the tolerance of the elastic member is on the order of 1/10 mm, it is difficult to use it in the joint structure. , dimension control cannot be performed with high precision. Generally, in a side-by-side type joint structure, if the clearance between the outer peripheral surface of the small diameter rod and the inner peripheral surface of the large diameter rod is 0.02 mm or more, rattling and squealing will occur. With the above-mentioned tolerances of the elastic member, it is difficult to control the dimensions so that such rattling or squealing does not occur. In other words, due to the tolerances used when forming the elastic member, it is not possible to control the dimensions of the joint part to the extent that it does not cause any problems with the product. In addition, the cost also increases.
　本発明は、上記した問題に着目してなされたものであり、大径竿杆（大径部）と小径竿杆（小径部）の継合部分でガタや鳴きが生じることが低減され、寸法精度が良い継合構造を備えた釣竿、及び、そのような継合構造の形成方法を提供することを目的とする。 The present invention has been made by focusing on the above-mentioned problems, and reduces rattling and squealing at the joint between a large diameter rod (large diameter part) and a small diameter rod (small diameter part), and reduces the size of the rod. It is an object of the present invention to provide a fishing rod having a joint structure with high precision, and a method for forming such a joint structure.
　上記した目的を達成するために、本発明に係る釣竿は、大径部の内周面に小径部の外周面を挿入して両者を継合させる継合構造を有しており、前記継合構造は、ストレート合わせ部と、前記小径部の端部に圧入され、軸方向及び径方向に突出する継合部を具備した弾性部材と、を有しており、前記小径部の外周面と前記継合部の外周面は一体的にセンタレス加工されており、前記継合部の外周面は、センタレス加工寸法に対してφ０．０３ｍｍ～φ０．０６ｍｍ大径であることを特徴とする。 In order to achieve the above object, the fishing rod according to the present invention has a joint structure in which the outer peripheral surface of the small diameter part is inserted into the inner peripheral surface of the large diameter part to join the two, and The structure includes a straight mating part and an elastic member press-fitted into the end of the small diameter part and having a joint part protruding in the axial and radial directions, and the elastic member has a joint part that is press-fitted into the end of the small diameter part and protrudes in the axial and radial directions. The outer circumferential surface of the joint part is integrally processed in a centerless manner, and the outer peripheral surface of the joint part is characterized in that it has a larger diameter of 0.03 mm to 0.06 mm than the centerless process dimension.
　上記した構成の釣竿では、小径部の外周面と、小径部に圧入される弾性部材の継合部（フランジ）の外周面を、一体的にセンタレス加工している。両者を一体的にセンタレス加工すると、弾性部材の継合部の部分が、加工時の押圧力によって軸方向に延ばされる力を受けながら、小径部の外周面と同じ外周面となるように切削加工される。そして、センタレス加工を終了すると、軸方向に伸びた状態にある継合部は、弾性力によって元に戻ろうとしつつ径方向に膨らむようになる。この継合部の径方向の膨らみについては、センタレス加工寸法（小径部の外周面の寸法）に対して、φ０．０３ｍｍ～φ０．０６ｍｍ大径にすることができるので、１／１００ｍｍオーダで精密な寸法管理を行なうことができ、小径部と大径部の継合時に、ガタや鳴きが生じることが低減される。また、センタレス加工するだけで、精密な寸法管理を行なうことが可能であるため、後加工等をすることが抑制され、加工コストを低減することが可能となる。 In the fishing rod configured as described above, the outer circumferential surface of the small diameter portion and the outer circumferential surface of the joint portion (flange) of the elastic member press-fitted into the small diameter portion are integrally processed in a centerless manner. When both are integrated into a centerless machine, the joint part of the elastic member receives the force of being stretched in the axial direction due to the pressing force during processing, and is machined so that the outer circumferential surface is the same as the outer circumferential surface of the small diameter part. be done. When the centerless machining is completed, the joint portion, which has been extended in the axial direction, begins to expand in the radial direction while attempting to return to its original state due to elastic force. Regarding the radial bulge of this joint, the diameter can be made larger by φ0.03mm to φ0.06mm compared to the centerless machining dimensions (dimensions of the outer circumferential surface of the small diameter part), so precision can be achieved on the order of 1/100mm. This allows accurate dimensional control and reduces rattling and squealing when joining the small diameter part and the large diameter part. Further, since it is possible to perform precise dimensional control simply by centerless processing, post-processing etc. can be suppressed, and processing costs can be reduced.
　また、本発明は、釣竿を構成する複数の竿杆の内、隣接する竿杆の大径部の内周面に小径部の外周面を挿入して両者を継合させる継合構造の形成方法を提供するのであり、この形成方法は、前記小径部の端部に、軸方向及び径方向に突出する継合部を具備した弾性部材を圧入して接着する弾性部材接着工程と、前記小径部、及び、前記軸方向に突出する継合部を、所定の外径寸法にセンタレス加工する表面処理工程と、を有することを特徴とする。 The present invention also provides a method for forming a joint structure in which the outer circumferential surface of a small diameter portion of an adjacent rod rod is inserted into the inner circumferential surface of a large diameter portion of a plurality of rod rods constituting a fishing rod to join the two rods. This forming method includes an elastic member bonding step of press-fitting and bonding an elastic member having a joint portion protruding in the axial and radial directions to the end of the small diameter portion; and a surface treatment step of performing centerless processing on the joint portion projecting in the axial direction to a predetermined outer diameter dimension.
　このような形成方法では、小径部と一体的にセンタレス加工される弾性部材の継合部の外径の寸法を精密に寸法管理することができることから、弾性部材が圧入された小径部と大径部を嵌合した際、ガタや鳴きが生じることが低減される。 With this forming method, it is possible to precisely control the outer diameter of the joint part of the elastic member that is centerlessly processed integrally with the small diameter part, so that the small diameter part and the large diameter part into which the elastic member is press-fitted can be precisely controlled. This reduces rattling and squealing when the parts are fitted together.
　本発明によれば、大径竿杆（大径部）と小径竿杆（小径部）の継合部分でガタや鳴きが生じることはなく、寸法精度が良い釣竿、及び、そのような継合構造を容易に得ることができる。 Advantageous Effects of Invention According to the present invention, there is provided a fishing rod with good dimensional accuracy without rattling or squealing at the joint between a large diameter rod (large diameter part) and a small diameter rod (small diameter part), and such a joint. structure can be easily obtained.
本発明に係る釣竿の一実施形態の主要部を示す図。1 is a diagram showing main parts of an embodiment of a fishing rod according to the present invention. 図１に示した釣竿の継合構造の小径部（小径竿杆）の端部と、その端部の開口に圧入される弾性部材を模式的に示した図（センタレス加工前）。FIG. 2 is a diagram schematically showing the end of the small diameter portion (small diameter rod rod) of the joint structure of the fishing rod shown in FIG. 1 and the elastic member press-fitted into the opening of the end (before centerless processing). （ａ）～（ｃ）は、図２に示した継合部分の加工工程を順に説明する図。(a) to (c) are diagrams sequentially explaining processing steps of the joint portion shown in FIG. 2. 弾性部材の第２実施形態を示す図。The figure which shows 2nd Embodiment of an elastic member. 弾性部材の第３実施形態を示す図。The figure which shows 3rd Embodiment of an elastic member. (ａ)は、図５に示す弾性部材と、小径竿杆及び大径竿杆の関係を示す図、（ｂ）は、小径竿杆に弾性部材を接着固定した状態を示す図。(a) is a diagram showing the relationship between the elastic member shown in FIG. 5 and a small-diameter rod and a large-diameter rod; (b) is a diagram showing a state in which the elastic member is adhesively fixed to the small-diameter rod. 弾性部材の第４実施形態を示す図。The figure which shows 4th Embodiment of an elastic member.
　図１は、本発明に係る釣竿の一実施形態の主要部を示す図である。
　本実施形態に係る釣竿１は、複数の竿杆を並継式で継合する構造となっており、元竿杆３、中竿杆５、及び穂先竿杆７の各竿杆同士は、その端部領域Ｐにおいて、継合構造１０によって継合される。この場合、中竿杆の本数（全体の継本数）については限定されることはなく、元竿杆３に直接、穂先竿杆７を継合する２本継ぎの構成であっても良い。
　また、釣竿は、リールが装着されて釣糸を案内する釣糸ガイドが取り付けられた構造であっても良い。 FIG. 1 is a diagram showing the main parts of an embodiment of a fishing rod according to the present invention.
The fishing rod 1 according to the present embodiment has a structure in which a plurality of rod rods are joined in parallel, and each of the main rod rods 3, the middle rod rod 5, and the tip rod rod 7 is connected to each other. In the end region P, it is joined by a joining structure 10. In this case, the number of middle rods (total number of joints) is not limited, and a two-joint configuration in which the tip rod 7 is directly connected to the main rod 3 may be used.
Further, the fishing rod may have a structure in which a reel is attached and a fishing line guide for guiding the fishing line is attached.
　前記元竿杆３及び中竿杆５は、繊維強化樹脂製の管状体で形成されており、例えば、強化繊維（主に炭素繊維やガラス繊維等）に、エポキシ樹脂等の合成樹脂を含浸した繊維強化樹脂プリプレグ（プリプレグシート）を芯金に巻回し加熱工程を経た後、脱芯する等、定法に従って成形されている。また、穂先竿杆７は、元竿杆３及び中竿杆５と同様、管状体として形成されていても良いし、中実体、或いは、管状体と中実体で形成されていても良い。 The main rod 3 and the middle rod 5 are formed of tubular bodies made of fiber-reinforced resin, such as reinforced fibers (mainly carbon fibers, glass fibers, etc.) impregnated with synthetic resin such as epoxy resin. The fiber-reinforced resin prepreg (prepreg sheet) is wound around a core metal, subjected to a heating process, and then cored, and then molded according to a standard method. Further, the tip rod 7, like the main rod 3 and the middle rod 5, may be formed as a tubular body, a solid body, or a tubular body and a solid body.
　次に、上記した釣竿１の継合構造１０について、図２及び図３を参照して説明する。　
　図２は、隣接する元竿杆３と中竿杆５との継合構造１０の内、中竿杆５側の継合構造を模式的に示した図であり、図３（ａ）～（ｃ）は、図２に示した継合部分の加工工程を順に説明する図である。この場合、元竿杆と中竿杆は、隣接して継合され、先細構造となることから、以下の説明では、元竿杆３については大径竿杆、中竿杆５については小径竿杆とも称する。 Next, the joint structure 10 of the fishing rod 1 described above will be explained with reference to FIGS. 2 and 3.
FIG. 2 is a diagram schematically showing the joint structure on the middle rod 5 side of the joint structure 10 between the adjacent main rod 3 and the middle rod 5, and FIGS. c) is a diagram sequentially explaining the processing steps of the joint portion shown in FIG. 2; In this case, the main rod and the middle rod are joined adjacently to form a tapered structure, so in the following explanation, the main rod 3 will be a large diameter rod, and the middle rod 5 will be a small diameter rod. Also called a rod.
　本実施形態では、継合構造１０として並継式を用いている。このため、小径竿杆５の端部（小径部５Ａとも称する）がオス側となって、大径竿杆３の端部（大径部３Ａとも称する）であるメス側に挿入、嵌合される。すなわち、大径部３Ａは、円筒状に形成され、その内周面３ａに小径部５Ａの外周面５ａを挿入して両者を継合させる構造となっている（図３（ｂ）において、継合構造１０の軸方向における合わせ長さを符号Ｌで示す）。 In this embodiment, a parallel joint type is used as the joint structure 10. Therefore, the end of the small-diameter rod 5 (also referred to as the small-diameter portion 5A) becomes the male side, and is inserted and fitted into the female side, which is the end of the large-diameter rod 3 (also referred to as the large-diameter portion 3A). Ru. That is, the large diameter portion 3A is formed into a cylindrical shape, and has a structure in which the outer circumferential surface 5a of the small diameter portion 5A is inserted into the inner circumferential surface 3a of the large diameter portion 3A to join the two (see FIG. 3(b)). The mating length of the mating structure 10 in the axial direction is indicated by the symbol L).
　隣接して継合される大径竿杆３及び小径竿杆５は、上記したように、プリプレグシートを巻回することで形成されており、少なくとも前記合わせ長さＬの部分には、補強用のプリプレグシートが巻回されていることが好ましい。また、各竿杆を構成するプリプレグシートは、強化繊維が軸方向に指向されたもの、周方向に指向されたもの、傾斜方向に指向されたもの、織布状に編成されたものが用いられ、これらが適宜、組み合わせて使用される。 As described above, the large-diameter rod 3 and the small-diameter rod 5 that are joined adjacent to each other are formed by winding a prepreg sheet, and at least the portion of the combined length L is provided with reinforcing material. Preferably, the prepreg sheet is wound. In addition, the prepreg sheets constituting each rod rod may have reinforcing fibers oriented in the axial direction, circumferential direction, oblique direction, or knitted into a woven fabric. , these are used in combination as appropriate.
　前記継合構造１０は、軸方向における合わせ長さＬの範囲内において、ストレート合わせ部１０Ａを備えている。図３（ｃ）において、ストレート合わせ部１０Ａの軸方向の合わせ長さが符号Ｌ１で示されている。
　本実施形態では、ストレート合わせ部１０Ａの軸方向両側で小径部５Ａと大径部３Ａの継合が成されるように構成されている。前記ストレート合わせ部１０Ａでは、小径竿杆５の外周面５ａと大径竿杆３の内周面３ａとの間に、継合時において隙間Ｇが生じるようになっており、その軸方向両側で以下のような継合がなされる。 The joint structure 10 includes a straight joint portion 10A within the range of the joint length L in the axial direction. In FIG. 3(c), the axial alignment length of the straight alignment portion 10A is indicated by the symbol L1.
In this embodiment, the small diameter portion 5A and the large diameter portion 3A are joined on both sides of the straight joining portion 10A in the axial direction. In the straight joining part 10A, a gap G is created between the outer circumferential surface 5a of the small diameter rod 5 and the inner circumferential surface 3a of the large diameter rod 3 at the time of joining, and a gap G is created on both sides in the axial direction. The following joints are made.
　このように、継合構造にストレート合わせ部１０Ａを設け、その軸方向両側の２個所（Ａ点、Ｂ点）で継合を行なうことにより、ストレート合わせ部の領域にテーパを形成して継合する構造と比較して、継合部分が軸方向に離間した２個所となり、１個所での継合と比べると、継合力の向上が図れる。
　勿論、継合構造は、弾性部材が配設されるＡ点のみで構成されていても良い。 In this way, by providing the straight joint part 10A in the joint structure and performing joints at two points (point A, point B) on both sides in the axial direction, a taper is formed in the region of the straight joint part and the joint is made. Compared to a structure in which the joints are connected in two places spaced apart in the axial direction, the joint force can be improved compared to a joint in one place.
Of course, the joint structure may include only point A where the elastic member is provided.
　前記Ａ点における継合構造は、以下のように構成される。
　小径竿杆５の小径部５Ａの端部開口５ｂには、弾性部材（ゴム栓）２０が圧入され、接着固定される。弾性部材２０は、例えば、シリコン、ニトリルゴム（ＮＢＲ）等を金型に注入することで一体成形されており、中実の円柱部２０Ａと、その端部に径方向に突出するように形成された継合部（フランジ）２０Ｂとを備えている。この継合部２０Ｂは、弾性部材を小径部５Ａの端部開口５ｂに接着した際、軸方向に突出する。また、硬度については材料にもよるが、あまり柔らか過ぎると継合部において十分な継合力が発揮されず、逆に硬すぎると、大径竿杆と継合する際に大きな抵抗になって摺動し難くなる可能性があるため、好ましくは、ＪＩＳ規格（ＪＩＳ　Ｋ　６２５３）で６０°～８０°程度の硬さのものが適している。 The joint structure at the point A is configured as follows.
An elastic member (rubber plug) 20 is press-fitted into the end opening 5b of the small-diameter portion 5A of the small-diameter rod 5 and fixed with adhesive. The elastic member 20 is integrally molded by injecting silicone, nitrile rubber (NBR), etc. into a mold, and includes a solid cylindrical portion 20A and an end thereof that protrudes in the radial direction. A joint portion (flange) 20B is provided. This joint portion 20B protrudes in the axial direction when the elastic member is bonded to the end opening 5b of the small diameter portion 5A. In addition, the hardness depends on the material, but if it is too soft, sufficient joint force will not be exerted at the joint, and if it is too hard, it will cause a lot of resistance when joining with a large diameter rod, making it difficult to slide. Since it may become difficult to move, it is preferable to use a hardness of about 60° to 80° according to the JIS standard (JIS K 6253).
　前記円柱部２０Ａは、小径部５Ａの端部開口５ｂに圧入できる大きさに形成されており、接着剤を塗布して、圧入固定される（弾性部材接着工程；図３（ａ））。前記継合部２０Ｂは、円柱部２０Ａが小径部５Ａの端部開口５ｂの内周面に圧入して接着された際、軸方向に突出すると共に、小径部５Ａの開口端縁５Ｂから径方向に突出する大きさに形成されている。具体的に、継合部２０Ｂは、その外径Ｄ１が、円柱部２０Ａの外径Ｄ２に対して大きくなるように（０．５ｍｍ程度）形成されている（図２参照）。 The cylindrical portion 20A is formed in a size that can be press-fitted into the end opening 5b of the small diameter portion 5A, and is press-fitted and fixed by applying an adhesive (elastic member bonding step; FIG. 3(a)). The joint portion 20B protrudes in the axial direction when the cylindrical portion 20A is press-fitted and adhered to the inner peripheral surface of the end opening 5b of the small diameter portion 5A, and also extends in the radial direction from the opening edge 5B of the small diameter portion 5A. It is formed to a protruding size. Specifically, the joint portion 20B is formed such that its outer diameter D1 is larger (approximately 0.5 mm) than the outer diameter D2 of the cylindrical portion 20A (see FIG. 2).
　上記のように、弾性部材２０が接着、固定された小径部５Ａは、所定の外径寸法となるように、公知のセンタレス加工機を用いてセンタレス加工が施される（表面処理工程；図３（ａ）（ｂ）参照）。この場合、センタレス加工は、小径部５Ａの外周面５ａ´、及び、小径部５Ａの端部開口５ｂの内面に接着された弾性部材２０に対して一体的に行われる。このため、弾性部材２０の継合部２０Ｂの外周面２０ａ´も、一体的に切削加工される。
　このセンタレス加工は、小径部５Ａの外周面５ａ´が所定の外径Ｄになるまで行われることから、併せて継合部２０Ｂの外周面２０ａ´についても同様な外径Ｄになるまで行われることとなる。 As described above, the small diameter portion 5A to which the elastic member 20 is adhered and fixed is subjected to centerless processing using a known centerless processing machine so that it has a predetermined outer diameter dimension (surface treatment step; Fig. 3 (a) (see (b)). In this case, the centerless processing is integrally performed on the elastic member 20 bonded to the outer circumferential surface 5a' of the small diameter portion 5A and the inner surface of the end opening 5b of the small diameter portion 5A. Therefore, the outer circumferential surface 20a' of the joint portion 20B of the elastic member 20 is also cut integrally.
This centerless machining is performed until the outer circumferential surface 5a' of the small diameter portion 5A reaches a predetermined outer diameter D, so it is also performed until the outer circumferential surface 20a' of the joint portion 20B reaches the same outer diameter D. It happens.
　上記したセンタレス加工が終了すると、継合部２０Ｂの外周面２０ａは、加工が施された小径部５Ａの外周面５ａに対して、径方向に僅かに膨出する。すなわち、センタレス加工を施すと、継合部２０Ｂの外周面２０ａは、外径Ｄになるのではなく僅かに膨出する。この僅かに膨出した膨出量については、センタレス加工後に膨出した外周面２０ａの外径をｄとした場合、φ０．０３ｍｍ～０．０６ｍｍの範囲内にすることができる（（ｄ－Ｄ）＝０．０３ｍｍ～０．０６ｍｍ）。 When the above-described centerless processing is completed, the outer circumferential surface 20a of the joint portion 20B swells slightly in the radial direction with respect to the outer circumferential surface 5a of the small diameter portion 5A that has been processed. That is, when centerless processing is performed, the outer circumferential surface 20a of the joint portion 20B does not become the outer diameter D but slightly bulges out. The amount of this slight bulge can be within the range of φ0.03 mm to 0.06 mm ((d-D )=0.03mm~0.06mm).
　この膨出は、小径部５Ａの外周面５ａ´と継合部２０Ｂの外周面２０ａ´を一体的にセンタレス加工することによって形成される。具体的には、継合部２０Ｂの部分が、加工時の押圧力によって軸方向に延ばされる力を受けながら表面が切削されており、センタレス加工を終了すると、軸方向に伸びた状態にある継合部２０Ｂが、その弾性力によって元に戻ろうとすることで形成される。すなわち、継合部２０Ｂは、小径部５Ａの開口端縁５Ｂで規制された状態となっているため、そのときの収縮力によって径方向に膨らみ、膨出部が形成される。 This bulge is formed by integrally centerless processing the outer circumferential surface 5a' of the small diameter portion 5A and the outer circumferential surface 20a' of the joint portion 20B. Specifically, the surface of the joint portion 20B is cut while receiving a force that extends in the axial direction due to the pressing force during machining, and when the centerless machining is completed, the joint extends in the axial direction. The joint portion 20B is formed by attempting to return to its original state due to its elastic force. That is, since the joint portion 20B is restricted by the opening edge 5B of the small diameter portion 5A, the joint portion 20B swells in the radial direction due to the contraction force at that time, and a bulging portion is formed.
　この継合部２０Ｂの膨らみについては、弾性部材２０の硬度、大きさ等に依存するが、センタレス加工寸法（小径部５Ａの外周面の寸法）に対して、φ０．０３ｍｍ～φ０．０６ｍｍ程度、大径にすることが容易に行える。すなわち、１／１００ｍｍオーダの公差で膨出させる（膨出部を形成する）ことを容易に行なうことができる。
　なお、弾性部材２０に対して、上記したセンタレス加工を施すと、その部分（継合部２０Ｂの部分）は、径方向に膨出すると共に膨出した表面については、軸方向にストレート状に延出する。この場合、径方向に膨出した表面は、弾性部材２０の構成に応じて、後端に向けて拡径する（テーパ状の表面になる）等、種々の形態になり得るが、本発明では、膨出部の表面形状（表面状態）については、特に限定されることはない。 The bulge of the joint portion 20B depends on the hardness, size, etc. of the elastic member 20, but is approximately φ0.03 mm to φ0.06 mm with respect to the centerless machining dimensions (dimensions of the outer peripheral surface of the small diameter portion 5A). It is easy to make the diameter larger. That is, it is possible to easily bulge (form a bulge) with a tolerance on the order of 1/100 mm.
Note that when the above-described centerless processing is applied to the elastic member 20, that portion (the joint portion 20B portion) bulges in the radial direction, and the bulged surface extends straight in the axial direction. put out In this case, the radially bulging surface can take various forms, such as expanding in diameter toward the rear end (becoming a tapered surface), depending on the configuration of the elastic member 20. There are no particular limitations on the surface shape (surface condition) of the bulge.
　また、上記したセンタレス加工時には、併せて前記Ｂ点で継合が成されるように加工処理が施される。
　具体的には、小径竿杆５のストレート合わせ部１０Ａの反対側の端部に、外周面５ａ´が前記Ａ点から軸方向に離れるにしたがって、次第に拡径するようにテーパ５Ｃを形成することで、そのような継合部を形成することが可能である。 Furthermore, during the centerless processing described above, processing is also performed so that the joint is formed at the point B.
Specifically, a taper 5C is formed at the end of the small-diameter rod 5 opposite the straight mating portion 10A so that the diameter thereof gradually increases as the outer circumferential surface 5a' moves away from the point A in the axial direction. It is possible to form such a joint.
　小径竿杆５と大径竿杆３の継合構造１０におけるストレート合わせ部１０Ａでは、大径竿杆３の内周面３ａは、軸方向に同一径となるように形成されている。このため、大径竿杆３に上記した小径竿杆５を差し込むと、大径竿杆３の開口端縁３Ａにテーパ５Ｃが当て付いて継合が成されると共に、小径竿杆５に取着された弾性部材２０の継合部２０Ｂが大径竿杆３の内周面３ａと継合して、ストレート合わせ部１０Ａの両端側（Ａ点、Ｂ点）で継合が成されるようになる（図３（ｃ）参照）。 In the straight joint portion 10A of the joint structure 10 of the small-diameter rod 5 and the large-diameter rod 3, the inner circumferential surface 3a of the large-diameter rod 3 is formed to have the same diameter in the axial direction. Therefore, when the small-diameter rod 5 described above is inserted into the large-diameter rod 3, the taper 5C comes into contact with the opening edge 3A of the large-diameter rod 3 to form a joint, and the rod is attached to the small-diameter rod 5. The joint part 20B of the attached elastic member 20 is joined to the inner circumferential surface 3a of the large diameter rod 3, so that the joint is formed at both ends (point A, point B) of the straight joint part 10A. (See Figure 3(c)).
　上記した本実施形態の継合構造１０について、具体的な寸法を挙げながら説明する。　
　内周面３ａの内径Ｄ３の大径竿杆３に対し、外周面５ａの外径Ｄの小径竿杆５を継合する場合、内径Ｄ３を１０.００ｍｍ、外径Ｄを９．９５ｍｍで設計する。これにより、嵌合時における両竿杆の隙間Ｇは０．０５ｍｍに設定される。この場合、大径竿杆３の内周面３ａは、上述したように、金属製の芯金によって形成されるので、公差が大きくなることはなく、大径竿杆３の内周面３ａの内径Ｄ３は、１０．０ｍｍ～１０．０１ｍｍ程度の範囲内で形成される。 The joint structure 10 of the present embodiment described above will be explained while citing specific dimensions.
When connecting a small diameter rod 5 with an outer diameter D on the outer circumferential surface 5a to a large diameter rod 3 with an inner diameter D3 on the inner circumferential surface 3a, the inner diameter D3 is designed to be 10.00 mm and the outer diameter D is 9.95 mm. do. As a result, the gap G between the two rods when they are fitted is set to 0.05 mm. In this case, the inner circumferential surface 3a of the large-diameter rod 3 is formed of a metal core as described above, so the tolerance does not become large, and the inner circumferential surface 3a of the large-diameter rod 3 The inner diameter D3 is formed within a range of approximately 10.0 mm to 10.01 mm.
　次に、図３（ａ）に示す小径竿杆５の外周面５ａ´及びここに接着固定された弾性部材２０の継合部２０Ｂの外周面２０ａ´に対して、上記したようにセンタレス加工を施す。この場合、小径竿杆５の外周面５ａの外径Ｄを設計値として、９．９５ｍｍでセンタレス加工をすると、弾性部材２０の継合部２０Ｂの外周面２０ａ´は、上記したセンタレス加工が施された後、その収縮によって、φ０．０３ｍｍ～φ０．０６ｍｍ程度、大径になっている（膨らんでいる）ため、その膨らみによって、外径ｄは、９．９８ｍｍ～１０．０１ｍｍの範囲で仕上がる。 Next, centerless processing is performed as described above on the outer circumferential surface 5a' of the small-diameter rod 5 shown in FIG. give In this case, if the outer diameter D of the outer circumferential surface 5a of the small diameter rod 5 is set as the design value and centerless processing is performed at 9.95 mm, the outer circumferential surface 20a' of the joint portion 20B of the elastic member 20 will be subjected to the above-described centerless processing. After that, due to the contraction, the diameter becomes larger (bulges) by about φ0.03mm to φ0.06mm, so due to the bulge, the outer diameter d is finished in the range of 9.98mm to 10.01mm. .
　一般的に、大径竿杆と小径竿杆の継合構造では、両者のクリアランスが０．０２ｍｍより大きくなると、ガタや鳴きが発生するようになる。上記した実施形態では、弾性部材２０の継合部２０Ｂを、小径竿杆５の外周面と共にセンタレス加工することで、継合部２０Ｂの外周面２０ａの外径ｄを、１／１００ｍｍのオーダで寸法管理することができる。すなわち、大径竿杆３の内周面３ａの内径Ｄ３の１０．０ｍｍ～１０．０１ｍｍ程度に対して、継合部２０Ｂの外周面２０ａの外径ｄを９．９８ｍｍ～１０．０１ｍｍに仕上げることが可能となる。
　このように、継合部２０Ｂの外周面と大径竿杆の内周面との間のクリアランスを、０．０２ｍｍ以下となるように寸法管理することが可能となるので、弾性部材２０を用いても公差を考慮することなく、両竿杆を嵌合した際、継合部でガタや鳴きの発生を抑制することが可能となる。 Generally, in a joint structure of a large-diameter rod and a small-diameter rod, if the clearance between the two is larger than 0.02 mm, rattling or squealing will occur. In the embodiment described above, by performing centerless processing on the joint portion 20B of the elastic member 20 together with the outer peripheral surface of the small diameter rod 5, the outer diameter d of the outer peripheral surface 20a of the joint portion 20B can be adjusted to the order of 1/100 mm. Dimensions can be managed. That is, while the inner diameter D3 of the inner circumferential surface 3a of the large-diameter rod 3 is approximately 10.0 mm to 10.01 mm, the outer diameter d of the outer circumferential surface 20a of the joint portion 20B is finished to be 9.98 mm to 10.01 mm. becomes possible.
In this way, it is possible to control the dimension so that the clearance between the outer circumferential surface of the joint part 20B and the inner circumferential surface of the large diameter rod is 0.02 mm or less. However, when both rods are fitted together, it is possible to suppress rattling and squealing at the joint without considering tolerances.
　また、上記した継合構造の形成方法によれば、継合部２０Ｂの寸法管理を１／１００ｍｍオーダで精密に行うことができるので、検品作業時等において、ガタや鳴きが生じたことを低減するための後加工をする作業工程が抑制され、加工コストを低減することが可能となる。 In addition, according to the method for forming the joint structure described above, the dimensions of the joint portion 20B can be precisely controlled on the order of 1/100 mm, thereby reducing rattling and squealing during inspection work, etc. The work process of post-processing for this purpose is suppressed, making it possible to reduce processing costs.
　また、上記した構成では、弾性部材２０を端部開口５ｂに取着することから、竿杆を落下した場合の衝撃緩和効果が得られると共に、その内部に小径の竿杆を収納した場合の抜け防止効果が得られる。 In addition, in the above-described configuration, since the elastic member 20 is attached to the end opening 5b, it is possible to obtain a shock-reducing effect when the rod is dropped, and also to prevent the rod from falling out when a small-diameter rod is stored inside the rod. A preventive effect can be obtained.
　次に、本発明の別の実施形態について説明する。
　以下の実施形態では、上記した実施形態と同一の構成部分については、同一の参照符号を付し、詳細な説明については省略する。 Next, another embodiment of the present invention will be described.
In the following embodiments, the same reference numerals are given to the same components as in the above-described embodiments, and detailed description thereof will be omitted.
　図４は、弾性部材の第２の実施形態を示す図である。
　この実施形態では、弾性部材２０を中実状にするのではなく、中空状（円筒部２０Ａ´）にしている。このように、弾性部材２０の小径竿杆に接着される部分を中空状に形成することで、継合構造の軽量化を図ることが可能となる。 FIG. 4 is a diagram showing a second embodiment of the elastic member.
In this embodiment, the elastic member 20 is not solid but hollow (cylindrical portion 20A'). In this way, by forming the portion of the elastic member 20 that is bonded to the small-diameter rod into a hollow shape, it is possible to reduce the weight of the joint structure.
　図５から図７は、弾性部材の第３の実施形態を示す図である。
　この実施形態では、第２実施形態と同様、弾性部材を中空状（円筒部２０Ａ´）に形成すると共に、円筒部２０Ａ´の外周面にリング状又は螺旋状に溝２１を形成している。この溝２１は、接着剤溜まりとしての機能を備えていることから、小径竿杆５と弾性部材２０との間の接着力の向上が図れる。 5 to 7 are diagrams showing a third embodiment of the elastic member.
In this embodiment, as in the second embodiment, the elastic member is formed into a hollow shape (cylindrical portion 20A'), and a ring-shaped or spiral groove 21 is formed on the outer peripheral surface of the cylindrical portion 20A'. Since this groove 21 has a function as an adhesive reservoir, it is possible to improve the adhesive force between the small diameter rod 5 and the elastic member 20.
　また、弾性部材２０の軸方向長さである円筒部２０Ａ´の長さＬ３、及び、継合部２０Ｂの長さＬ４については、以下のように設定することが好ましい。
　まず、円筒部２０Ａ´の軸方向長さＬ３については、短すぎると十分な接着強度が得られず、長過ぎると、撓み性に影響を与えたり重量が増加するので、１０.０ｍｍ～２５.０ｍｍの範囲で形成することが好ましい。また、継合部２０Ｂの軸方向長さＬ４については、短すぎると十分な嵌合強度が得られず、長過ぎると、継合時の摺動性に影響を与えるため、３．０ｍｍ～５．０ｍｍの範囲で形成することが好ましい。 Further, the length L3 of the cylindrical portion 20A', which is the axial length of the elastic member 20, and the length L4 of the joint portion 20B are preferably set as follows.
First, regarding the axial length L3 of the cylindrical portion 20A', if it is too short, sufficient adhesive strength cannot be obtained, and if it is too long, it will affect the flexibility and increase the weight, so it should be 10.0 mm to 25 mm. It is preferable to form it in the range of 0 mm. In addition, regarding the axial length L4 of the joint portion 20B, if it is too short, sufficient fitting strength cannot be obtained, and if it is too long, it will affect the slidability during jointing, so it should be 3.0 mm to 5 mm. It is preferable to form it within a range of .0 mm.
　前記軸方向長さＬ３，Ｌ４については、円筒部２０Ａ´の外径（溝が形成されていない部分の外径）Ｄ２、及び、継合部２０Ｂの加工前の外径Ｄ１に応じて形成すれば良い。具体的には、円筒部２０Ａ´の外径Ｄ２が１０．０ｍｍ未満であれば、Ｌ３は２０．０ｍｍ程度、外径Ｄ２が１０．０ｍｍ以上であれば、Ｌ３は２５．０ｍｍ程度にすれば良い。また、継合部２０Ｂの外径Ｄ１が１２．０ｍｍ未満であれば、Ｌ４は４．０ｍｍ程度、外径Ｄ１が１２．０ｍｍ以上であれば、Ｌ４は５．０ｍｍ程度にすれば良い。 The axial lengths L3 and L4 should be formed according to the outer diameter D2 of the cylindrical portion 20A' (the outer diameter of the portion where no groove is formed) and the outer diameter D1 of the joint portion 20B before processing. Good. Specifically, if the outer diameter D2 of the cylindrical portion 20A' is less than 10.0 mm, L3 should be about 20.0 mm, and if the outer diameter D2 is 10.0 mm or more, L3 should be about 25.0 mm. good. Further, if the outer diameter D1 of the joint portion 20B is less than 12.0 mm, L4 may be approximately 4.0 mm, and if the outer diameter D1 is 12.0 mm or more, L4 may be approximately 5.0 mm.
　図６（ａ）で示すように、弾性部材２０を小径竿杆５に圧入して接着固定する場合、小径竿杆５の内周面５ｃの内径Ｄ４については、上述したように、金属製の芯金によって形成されるので、公差が大きくなることはなく、設計値に対して＋０．０１ｍｍ程度の範囲内で形成される。また、弾性部材２０については、上記したように、接着剤溜まりとなる溝２１が形成されており、ここに接着剤（シアノン７２１等）を塗布して小径竿杆５の内周面に圧入、接着するので、円筒部２０Ａ´の外径Ｄ２については、設計値として、小径竿杆５の内径Ｄ４に対して小径にする（内径Ｄ４に対して－０．０５ｍｍ～－０．１ｍｍ程度、小径にする）のが好ましい。
　すなわち、弾性部材２０は、上記したように、公差が大きい（１／１０ｍｍオーダ）ものの、内径Ｄ４に対して、ある程度、小径の設計値にしておけば、接着剤溜まりとなる溝２１があることで、実際の外径が小さい場合であっても十分な接着強度が得られ、また、逆に、実際の外径が大きい場合であっても、圧入時の抵抗が軽減され、弾性部材２０を小径竿杆５に圧入、接着することができる。 As shown in FIG. 6(a), when the elastic member 20 is press-fitted into the small-diameter rod 5 and fixed with adhesive, the inner diameter D4 of the inner circumferential surface 5c of the small-diameter rod 5 is made of metal as described above. Since it is formed from a cored metal, the tolerance does not become large and is formed within a range of approximately +0.01 mm from the design value. Furthermore, as described above, the elastic member 20 is formed with a groove 21 that serves as an adhesive reservoir, and an adhesive (such as Cyanon 721) is applied thereto and press-fitted onto the inner circumferential surface of the small diameter rod 5. Since it will be bonded, the outer diameter D2 of the cylindrical portion 20A' should be smaller than the inner diameter D4 of the small diameter rod 5 as a design value (approximately -0.05 mm to -0.1 mm with respect to the inner diameter D4, the smaller diameter ) is preferable.
That is, as described above, although the elastic member 20 has a large tolerance (on the order of 1/10 mm), if the design value is set to a certain degree of small diameter with respect to the inner diameter D4, there will be a groove 21 that will become an adhesive reservoir. Therefore, sufficient adhesive strength can be obtained even when the actual outer diameter is small, and conversely, even when the actual outer diameter is large, the resistance during press-fitting is reduced and the elastic member 20 can be It can be press-fitted and glued into the small diameter rod 5.
　そして、弾性部材２０を小径竿杆５の内周面５ｃに圧入、接着した後、上記したようなセンタレス加工が施される。このセンタレス加工によって、継合部２０Ｂの外径ｄは、上述したように、加工後の小径竿杆５の外周面の外径Ｄよりもφ０．０３ｍｍ～φ０．０６ｍｍ程度、大径になっている(図６（ｂ）参照)。 After the elastic member 20 is press-fitted and adhered to the inner circumferential surface 5c of the small-diameter rod 5, the centerless processing as described above is performed. Through this centerless processing, the outer diameter d of the joint portion 20B becomes larger by about φ0.03 mm to φ0.06 mm than the outer diameter D of the outer peripheral surface of the small diameter rod 5 after processing, as described above. (See Figure 6(b)).
　このように、弾性部材２０が接着固定されて、センタレス加工が施された小径竿杆５は、大径竿杆３に継合される（図６（ａ）参照）。このとき、大径竿杆３の内周面３ａの内径Ｄ３は、設計値に対して、０～０．０１ｍｍ程度の公差があるものの、継合部２０Ｂの外周面２０ａの外径ｄについては、センタレス加工によって、小径竿杆の外周面Ｄとの間で、継合時に鳴きなどが生じないクリアランス（０．０２ｍｍ程度）以下に形成することが可能となる。 In this way, the small-diameter rod 5 to which the elastic member 20 is adhesively fixed and subjected to centerless processing is joined to the large-diameter rod 3 (see FIG. 6(a)). At this time, although the inner diameter D3 of the inner circumferential surface 3a of the large-diameter rod 3 has a tolerance of about 0 to 0.01 mm with respect to the design value, the outer diameter d of the outer circumferential surface 20a of the joint portion 20B By centerless machining, it is possible to form a clearance (approximately 0.02 mm) or less between the outer circumferential surface D of the small diameter rod and the rod that will not cause any squealing during jointing.
　また、上記した構成の弾性部材２０の円筒部２０Ａ´の内側空洞部２２には、図７に示すように、芯材３０を圧入、固定することが好ましい。この芯材３０は、例えば、金属、樹脂、コルク等によって構成することができ、センタレス加工後に圧入、接着することで継合部２０Ｂの外径を大きくことが可能である。すなわち、継合力が弱い場合、このような芯材３０を圧入、接着することで、継合力を調整することが可能である。また、芯材３０を圧入、接着することで、継合を解除する際に大きく変形し難くなり、図７のＰ１部分（継合部２０Ｂと小径竿杆５の開口端縁５Ｂの接合部分）に亀裂が入ったり、嵌合部分がちぎれる等の不具合が生じることはない。 Furthermore, as shown in FIG. 7, it is preferable that a core material 30 is press-fitted and fixed into the inner cavity 22 of the cylindrical portion 20A' of the elastic member 20 having the above-described configuration. This core material 30 can be made of, for example, metal, resin, cork, etc., and can be press-fitted and bonded after centerless processing to increase the outer diameter of the joint portion 20B. That is, when the joint force is weak, it is possible to adjust the joint force by press-fitting and bonding such a core material 30. In addition, by press-fitting and gluing the core material 30, it becomes difficult to deform greatly when the joint is released, and the P1 part in FIG. 7 (joint part between the joint part 20B and the opening edge 5B of the small diameter rod 5) There will be no problems such as cracks or breakage of the mating parts.
　以上、本発明の実施形態について説明したが、本発明は、継合構造を形成するに際し、竿杆の外周面と、その竿杆の端部開口に圧入された弾性部材を一体的にセンタレス加工することに特徴があり、それ以外の構成については、上記した実施形態に限定されることはなく、種々変更することが可能である。 Although the embodiments of the present invention have been described above, the present invention provides an integral centerless process for forming the joint structure by integrally processing the outer peripheral surface of the rod rod and the elastic member press-fitted into the end opening of the rod rod. Other configurations are not limited to the above-described embodiment and can be modified in various ways.
　本発明の継合構造は、小径部と大径部との間にストレート合わせ部があれば、具体的な構造は特定されることはない。このため、両竿杆の継合は、上記した弾性部材の部分のみで行うようにしても良い。また、弾性部材２０の継合部（フランジ）については、金型でその大きさが形成されるが、センタレス加工がし易いように、円柱部２０Ａの外径Ｄ２に対して、０．５～１．０ｍｍ程度、大きく形成することが好ましい。 The joint structure of the present invention does not have a specific structure as long as there is a straight joining part between the small diameter part and the large diameter part. Therefore, the two rods may be joined only by the above-mentioned elastic member. The size of the joint (flange) of the elastic member 20 is determined by a mold, but in order to facilitate centerless processing, the size of the joint (flange) of the elastic member 20 is 0.5 to 0.5 to It is preferable to form it as large as about 1.0 mm.
　また、本発明に係る釣竿の継合構造１０は、上記した並継式以外にも、逆並継式、インロー式にも適用することが可能である。
　すなわち、逆並継式の継合構造では、小径竿杆５の端部が大径部（メス側）となり、大径竿杆３の端部が小径部（オス側）となる。また、インロー式の継合構造では、大径竿杆３の端部にインロー（芯材）が圧入、固定された構成の場合、小径竿杆５の端部が大径部（メス側）、露出するインローが小径部（オス側）となり、小径竿杆３の端部にインロー（芯材）が圧入、固定された構成の場合、大径竿杆３の端部が大径部（メス側）となり、露出するインローが小径部（オス側）となる。 Furthermore, the fishing rod joint structure 10 according to the present invention can be applied not only to the parallel joint type described above but also to a reverse joint type and a spigot type.
That is, in the reverse parallel joint type joint structure, the end of the small-diameter rod 5 becomes the large-diameter portion (female side), and the end of the large-diameter rod 3 becomes the small-diameter portion (male side). In addition, in the spigot type joint structure, if the spigot (core material) is press-fitted and fixed at the end of the large diameter rod 3, the end of the small diameter rod 5 is the large diameter portion (female side), In the case of a configuration in which the exposed spigot becomes the small diameter part (male side) and the spigot (core material) is press-fitted and fixed at the end of the small diameter rod 3, the end of the large diameter rod 3 becomes the large diameter part (female side). ), and the exposed spigot becomes the small diameter part (male side).
　また、上記した具体的な寸法は一例であり、釣竿の種別、小径部と大径部の太さ等によって適宜、変形することが可能である。この場合、センタレス加工後の弾性部材２０，２０´の継合部２０Ｂの外周面の外径ｄについては、小径部（小径竿杆）の外周面よりも大径（実施形態ではφ０．０３ｍｍ～φ０．０６ｍｍ大径）とされたが、膨出量がそのような範囲内になるように、材料を選択すれば良い。さらに、膨出量については、φ０．０３ｍｍ～φ０．０６ｍｍに限定されることはなく、釣竿の太さや種別等によって、適宜、変更することが可能である（φ０ｍｍより大きく形成されていれば良い）。 Further, the above-mentioned specific dimensions are just an example, and can be modified as appropriate depending on the type of fishing rod, the thickness of the small diameter part and the large diameter part, etc. In this case, the outer diameter d of the outer peripheral surface of the joint part 20B of the elastic members 20, 20' after centerless processing is larger than the outer peripheral surface of the small diameter part (small diameter rod) (in the embodiment, φ0.03 mm ~ Although the diameter is 0.06 mm (large diameter), the material may be selected so that the amount of bulge falls within such a range. Furthermore, the amount of bulge is not limited to φ0.03 mm to φ0.06 mm, and can be changed as appropriate depending on the thickness and type of the fishing rod (as long as it is larger than φ0 mm). ).
１　釣竿
３　元竿杆（大径竿杆）
３Ａ　大径部
５　中竿杆（小径竿杆）
５Ａ　小径部
１０　継合構造
１０Ａ　ストレート合わせ部
２０　弾性部材
２０Ｂ　継合部
３０　芯材

  1 Fishing rod 3 Original rod (large diameter rod)
3A Large diameter part 5 Medium rod (small diameter rod)
5A Small diameter portion 10 Joint structure 10A Straight joint portion 20 Elastic member 20B Joint portion 30 Core material

Claims (8)

  1. 　大径部の内周面に小径部の外周面を挿入して両者を継合させる継合構造を有する釣竿において、
    　前記継合構造は、ストレート合わせ部と、前記小径部の端部に圧入され、軸方向及び径方向に突出する継合部を具備した弾性部材と、を有しており、
    　前記小径部の外周面と前記継合部の外周面は一体的にセンタレス加工されており、前記継合部の外周面は、センタレス加工寸法に対してφ０．０３ｍｍ～φ０．０６ｍｍ大径であることを特徴とする釣竿。     In a fishing rod having a joint structure in which the outer circumferential surface of the small diameter part is inserted into the inner circumferential surface of the large diameter part and the two are joined,
    The joint structure includes a straight mating part and an elastic member that is press-fitted into the end of the small diameter part and has a joint part that protrudes in the axial and radial directions,
    The outer circumferential surface of the small diameter portion and the outer circumferential surface of the joint portion are integrally machined in a centerless manner, and the outer peripheral surface of the joint portion has a larger diameter of φ0.03 mm to φ0.06 mm with respect to the centerless machining dimension. A fishing rod that is characterized by:
  2. 　前記弾性部材は、円筒形状の中実構造、又は、中空構造である、ことを特徴とする請求項１に記載の釣竿。 The fishing rod according to claim 1, wherein the elastic member has a cylindrical solid structure or a hollow structure.
  3. 　前記弾性部材は中空構造であり、その内側空洞部に芯材を接着固定した、ことを特徴とする請求項１に記載の釣竿。 The fishing rod according to claim 1, wherein the elastic member has a hollow structure, and a core material is adhesively fixed to the inner hollow part of the elastic member.
  4. 　前記小径部の端部に圧入される弾性部材には、前記小径部の内周面との間で塗布される接着剤の接着剤溜まりが形成されている、ことを特徴とする請求項１に記載の釣竿。 2. The elastic member press-fitted into the end of the small diameter portion has an adhesive reservoir formed therein for an adhesive to be applied between the elastic member and the inner circumferential surface of the small diameter portion. Fishing rod listed.
  5. 　前記継合構造は、前記ストレート合わせ部の軸方向両側で、前記小径部と大径部の継合が成されることを特徴とする、請求項１に記載の釣竿。 The fishing rod according to claim 1, wherein in the joint structure, the small diameter part and the large diameter part are joined on both sides of the straight joining part in the axial direction.
  6. 　釣竿を構成する複数の竿杆の内、隣接する竿杆の大径部の内周面に小径部の外周面を挿入して両者を継合させる継合構造の形成方法において、
    　前記小径部の端部に、軸方向及び径方向に突出する継合部を具備した弾性部材を圧入して接着する弾性部材接着工程と、
    　前記小径部、及び、前記軸方向に突出する継合部を、所定の外径寸法にセンタレス加工する表面処理工程と、
    　を有することを特徴とする、継合構造の形成方法。     In a method for forming a joint structure in which the outer circumferential surface of a small diameter portion of an adjacent rod rod is inserted into the inner circumferential surface of a large diameter portion of a plurality of rod rods constituting a fishing rod to join the two,
    an elastic member bonding step of press-fitting and bonding an elastic member having a joint portion protruding in the axial and radial directions to the end of the small diameter portion;
    a surface treatment step of centerlessly processing the small diameter portion and the joint portion protruding in the axial direction to a predetermined outer diameter dimension;
    A method for forming a joint structure, comprising:
  7. 　前記センタレス加工を施した後、前記継合部の外径は、センタレス加工寸法に対してφ０．０３ｍｍ～φ０．０６ｍｍ大径に加工されている、ことを特徴とする請求項６に記載の継合構造の形成方法。 7. The joint according to claim 6, wherein after the centerless processing is performed, the outer diameter of the joint is increased by φ0.03 mm to φ0.06 mm relative to the centerless processing dimension. How to form a joint structure.
  8. 　前記弾性部材は中空構造であり、前記センタレス加工を施した後、その内側空洞部に芯材を接着固定する、ことを特徴とする請求項６に記載の継合構造の形成方法。 7. The method for forming a joint structure according to claim 6, wherein the elastic member has a hollow structure, and after the centerless processing is performed, a core material is adhesively fixed to the inner hollow part.
PCT/JP2023/014816 2022-08-29 2023-04-12 Fishing rod and method for forming joint structure WO2024047923A1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63109767U (en) * 1987-01-08 1988-07-14
JPH0779666A (en) * 1993-06-26 1995-03-28 Daiwa Seiko Inc Method for forming rod end
JP2001231411A (en) * 2000-02-25 2001-08-28 Daiwa Seiko Inc Swinging fishing rod
CN213117001U (en) * 2020-06-28 2021-05-04 阮丽英 Telescopic rod

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63109767U (en) * 1987-01-08 1988-07-14
JPH0779666A (en) * 1993-06-26 1995-03-28 Daiwa Seiko Inc Method for forming rod end
JP2001231411A (en) * 2000-02-25 2001-08-28 Daiwa Seiko Inc Swinging fishing rod
CN213117001U (en) * 2020-06-28 2021-05-04 阮丽英 Telescopic rod

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