JP2015123074A - Fishing rod - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fishing rod including an ear tip having characteristics being flexible and hard to be damaged, and capable of providing the characteristics at a required portion at a required degree.SOLUTION: A fishing rod 1 includes an ear tip 12 made of fiber-reinforced resin. The ear tip 12 includes: a continuous fiber-reinforced resin part 62 formed by continuously aligning reinforcement fibers from a base end to the tip end thereof; and a discontinuous fiber-reinforced resin part 60 that is joined with the tip end of the continuous fiber-reinforced resin part 62 and formed by distributing staples with a content of 3-50 wt.% to a matrix resin material.

Description

  The present invention relates to a fishing rod, and in particular, to a fishing rod having a feature at the tip.

  Generally, a fishing rod is constituted by winding a so-called prepreg in which reinforcing fibers are aligned in a specific direction and impregnated with a synthetic resin. Such a fishing rod is configured as a tubular body in order to reduce the weight, but the tip of the fishing rod is configured in a solid shape so that it is easy to bend and does not break even if it is greatly bent when caught by a fish. Things are sometimes used.

  Normally, a solid tip is impregnated with a synthetic resin in reinforcing fibers (carbon fiber, glass fiber, etc.) continuous from the base end to the tip end as disclosed in Patent Document 1 and Patent Document 2, for example. The so-called fiber-reinforced resin material is used, and these are mainly manufactured by a pultrusion method.

JP 54-80372 A JP-A-9-248103

  Since the above-mentioned known tip has a state in which reinforcing fibers are oriented from the base end to the tip end (continuous fiber solid body), the elongation is determined by the material of the reinforcing fibers to be selected. For example, in the carbon fiber and glass fiber as described above, the elongation is about 1.5 to 2.7% with respect to the entire length, and the fiber itself does not grow so much. For this reason, the elongation of the reinforcing fibers becomes wrinkles, the rigidity when bending acts is high, and there is a limit from the viewpoint of softness. In other words, the tip should be as soft and strong as possible (especially entrainment strength) so that it can detect and visually recognize the delicate fish hits. Depending on the fish, fishing species, etc., a soft one may be desired. In this case, if the continuous fiber solid body is soft, it may be possible to reduce the outer diameter. However, if it is too thin to make it soft, processing and assembly operations become difficult. Further, such a soft and high strength characteristic of the tip may be obtained to a necessary degree at a required portion of the tip in order to realize, for example, a tip having various tone.

  The present invention has been made by paying attention to the above-described problems, and has an object to provide a fishing rod having a tip that can be obtained in a necessary degree at a required portion while having characteristics that are soft and difficult to break. And

  In order to achieve the above object, the present invention provides a fishing rod having a fiber reinforced resin tip, wherein the tip is impregnated with a synthetic resin in which reinforcing fibers are continuously oriented from the base end to the tip end. 3% to 50% by weight of the continuous fiber reinforced resin part and the short fiber having an average fiber diameter of 3 μm to 15 μm and an average fiber length of 0.5 mm to 10 mm bonded to the tip of the continuous fiber reinforced resin part And a discontinuous fiber reinforced resin portion formed by being dispersed in a matrix resin material.

  The tip of the fishing rod having the above configuration has a discontinuous fiber reinforced resin portion in which short fibers (short fibers having an average fiber diameter of 3 μm to 15 μm and an average fiber length of 0.5 mm to 10 mm) are dispersed in a matrix resin material. It can have characteristics that are soft and difficult to break. In particular, such a discontinuous fiber reinforced resin part is softer and more flexible when compared with a continuous fiber reinforced resin part in which reinforcing fibers are oriented from the base end to the tip, and it is easy to detect a delicate fish hit and visually. It becomes easy to do. In this case, since the short fibers are dispersed in the matrix resin material, the amount of displacement until breakage (breaking) increases, and even if the outer diameter is increased to some extent, such an effect can be obtained. Therefore, it is easy to process and an assembly type fishing rod can be easily assembled.

  In addition, the tip of the fishing rod having the above-mentioned configuration has the above-described characteristics that are particularly soft and difficult to break on the tip side of the tip because the discontinuous fiber reinforced resin portion is joined to the tip of the continuous fiber reinforced resin portion. In the joint part, for example, the discontinuous fiber reinforced resin part is extended over the whole or a part of the outer peripheral surface of the continuous fiber reinforced resin part, thereby forming various joint forms, so that the tip is soft and hardly damaged. Can be obtained in the required degree at the required site.

  ADVANTAGE OF THE INVENTION According to this invention, while having the characteristic which is soft and hard to damage, the fishing rod which has the tip which can obtain the characteristic by the required degree in a required site | part can be provided.

1 is an overall view of a fishing rod according to an embodiment of the present invention. The side view which shows the structure of the tip rod of the fishing rod shown in FIG. The figure which shows typically the state of the reinforced fiber (short fiber) contained in the discontinuous fiber reinforced resin part of a spikelet. The longitudinal cross-sectional view along the AA line of FIG. (A)-(c) is a schematic diagram which shows the various joining forms of a discontinuous fiber reinforced resin part and a continuous fiber reinforced resin part. It is a figure explaining the method of manufacturing a spikelet, and is a figure which shows an example of a metal mold | die.

Hereinafter, an embodiment of a fishing rod according to the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is an overall view showing an example of a fishing rod according to the present invention. The fishing rod 1 of this embodiment is a joint type fishing rod with an outer guide, and includes a main rod 10, a plurality of middle rods (in this embodiment, two middle rods) 11a and 11b, and a tip rod. 12 is connected in a swing-out manner.

  As is well known, the main rod 10 and the middle rods 11a and 11b are configured as a fiber reinforced resin tubular body in which a synthetic resin such as an epoxy resin or a polyester resin is reinforced with a reinforcing fiber such as carbon fiber. . In the fishing rod 1 shown in the figure, a reel seat 50 is provided on the main rod 10, and an outer guide 55 and a top guide 56 for guiding a fishing line discharged from the reel 51 mounted on the reel seat 50 are spaced apart from each other by a predetermined interval. Although provided (a part of the guide may be a floating type), the fishing rod 1 may be configured such that such an outer guide is not provided. Moreover, although the drawing type fishing rod is shown in the figure, it may be a parallel-type or reverse-parallel type.

FIG. 2 shows a tip rod 12 of the fishing rod shown in FIG.
The tip heel 12 of the present embodiment is configured in a solid shape with a circular cross section as a whole, and is configured to be inserted into the middle heel 11b, and the tip heel 12 constitutes the tip (hereinafter, referred to as a tip). The ear tip is also called the tip). The tip 12 is joined to a continuous fiber reinforced resin portion 62 impregnated with a synthetic resin in which reinforcing fibers are continuously oriented from the base end to the tip, and the tip of the continuous fiber reinforced resin portion 62, It comprises a discontinuous fiber reinforced resin portion 60 configured as a composite material in which short fibers as reinforcing materials are dispersed in a matrix resin. The discontinuous fiber reinforced resin portion 60 is excellent in flexibility due to the configuration described later, and has a property of being difficult to break (not easily damaged) when displaced.

  In addition, although the pointed hook 12 shown to a figure is comprised by the cross-sectional circle shape and solid shape over the full length, the base end side may become a tubular body and the front end side may be comprised solid. In other words, the tip end may be a solid tip, and the base end may be a hollow ear tube to connect the two together, or the tip end may be configured (or in another embodiment, The discontinuous fiber reinforced resin portion 60 may be a tip, and the continuous fiber reinforced resin portion 62 may be a head tube). By configuring in this way, a short region at the tip of the tip rod is used as a fishing rod. Sensitivity can be improved. Moreover, about the solid part of the spikelet, you may be comprised as a plate-shaped core material so that it may bend in one direction easily. For example, by using a flat plate shape, it is suitable for a tip of a smelt rod and a tip of a fishing rod to which a bait reel is attached. Alternatively, the spikelet may be a hollow tubular body instead of a solid body (solit body). Such a tubular body can be formed by winding a prepreg in which reinforcing fibers are aligned in the axial length direction around a tapered mandrel, and a coating layer is formed on the surface of such a tubular body. May be. According to such a configuration, it is possible to reduce the weight of the tip.

  The continuous fiber reinforced resin portion 62 in which the reinforced fibers are continuous from the base end to the tip end is made of a synthetic resin (for example, a thermoplastic resin such as lyamide, polypropylene, polyphenylene sulfide, polyether imide) or the like, such as carbon fiber or glass fiber. And a so-called fiber-reinforced resin material impregnated with a thermosetting resin such as epoxy and phenol, and is formed into a predetermined shape (as a solid or tubular body) by, for example, a pultrusion method. The reinforcing fiber 13 constituting the continuous fiber reinforced resin portion 62 may be continuous from the proximal end to the distal end, and is a bundle of a plurality of straight fibers extending in the axial direction. There are no particular restrictions on the manner in which the reinforcing fibers are arranged, such as those in which a plurality of reinforcing fibers are twisted along the axial length direction and a plurality of these reinforcing fibers are bundled or a combination thereof.

  The discontinuous fiber reinforced resin portion 60 in which fibers are discontinuously scattered along the axial length direction is made of a fiber reinforced resin in which a number of short fibers 22 serving as reinforcing materials are dispersed in a matrix resin 20 as schematically shown in FIG. Is a so-called solid body. In this case, the matrix resin 20 is composed of a thermoplastic resin (for example, polyamide, polypropylene, polyphenylene sulfide, polyetherimide) or a thermosetting resin (for example, epoxy, phenol). Alternatively, a polyamide resin as a main component and other thermoplastic resins (polyester, polycarbonate, etc.) may be contained.

  The matrix resin 20 may contain other auxiliary materials (materials other than reinforcing materials). For example, a colorant such as a pigment exhibiting a color may be mixed to express the color of the tip 12 or the matrix resin may be foamed and mixed with microbubbles to reduce the weight. Alternatively, it is possible to increase the efficiency at the time of injection molding by adding a flow modifier, an antistatic agent, a release agent, an antioxidant and the like.

  For example, PAN-based or pitch-based carbon fibers or glass fibers can be used as the reinforcing fibers (short fibers 22) dispersed in a large amount in the matrix resin 20. The size of each short fiber 22 is not particularly limited, but it is preferable to use one having an average fiber diameter of 3 μm to 15 μm and an average fiber length of 0.5 mm to 10 mm.

  Here, the short fibers 22 dispersed in the matrix resin 20 are set in the above-described range because when the fiber diameter is smaller than 3 μm and the length is shorter than 0.5 mm, the tip has a predetermined elasticity (eye sensitivity is lower). In order to obtain good elasticity or strength), it is necessary to mix a large amount of fibers, which deteriorates the fluidity at the time of molding and tends not to disperse the short fibers uniformly in the axial direction. Because there is. Also, if the fiber diameter is larger than 15 μm and the length is longer than 10 mm, the fluidity at the time of molding deteriorates even if the fiber ratio provides a predetermined elasticity, and the short fibers are uniformly distributed in the axial direction. This is because it tends to be impossible.

  Moreover, content with respect to the matrix resin 20 of the short fiber 22 of an above-described magnitude | size is set to 3-50 wt%. This is because if the short fiber 22 has the above-mentioned size, if it is less than 3 wt%, sufficient strength cannot be obtained. Even if it exists, it is because the fluidity | liquidity at the time of shaping | molding worsens and there exists a tendency which cannot disperse | distribute a short fiber uniformly in an axial length direction. Moreover, even if the matter required for the tip (soft and flexible and maintain strength) is taken into consideration, such an effect is sufficiently exerted if the content of the short fiber is 50 wt% or less. Is possible.

  In addition, about the short fiber disperse | distributed in the matrix resin 20, all the short fibers do not need to exist in the above-mentioned range, and the thing of the magnitude | size which remove | deviates from this range may be included partially. That is, the average value of a large number of short fibers only needs to be within the above-described range, and some of the short fibers may be larger or smaller than the above-described range.

  Moreover, about content of the above-mentioned short fiber 22, it is not necessary to make it uniform over an axial length direction. For example, if the constitution is such that the content of the short fiber 22 increases continuously or stepwise as it moves to the proximal end side in the axial length direction, the tip end can be easily bent. Alternatively, if the content of the short fibers 22 is made uniform over the axial length direction and the same diameter is made over the axial length direction, the bending characteristics of the bending become uniform, but as shown in FIG. By forming the taper 12A on the surface so as to reduce the diameter, it is possible to have a configuration in which the amount of bending increases as it moves to the front side. Including a straight part, a part having a large diameter part, a part having a different taper ratio and a smaller diameter, and a stepped diameter part). Furthermore, in a structure with a small content of the short fibers 22 on the tip side, as shown in FIG. 2, it is possible to make the tip region easier to bend and form a sensitive structure by forming a taper on the surface. In this case, as a method of changing the content of the short fibers 22 along the axial length direction, for example, fiber reinforced resin materials having different fiber contents may be injected using a two-color molding machine.

  In addition, regarding the discontinuous fiber reinforced resin portion 60 formed of the composite material as described above, the short fibers 22 serving as the reinforcing material have many anisotropic states on the radially inner side and are oriented in the axial length direction on the radially outer peripheral side. It is preferable to disperse in the matrix resin material 20 so as to increase the number of states. Specifically, as shown in the cross section of FIG. 4, when the short fiber is oriented in the axial length direction, the cross section becomes a substantially circular shape (see the short fiber 22 radially outward), but the short fiber is anisotropic. When in a state, the short fibers are cut obliquely when viewed in cross section, so that the tendency to become elliptical or oblong is strong (see the short fibers 22 ′ existing in the central region in the radial direction). That is, the discontinuous fiber reinforced resin portion 60 has a configuration in which, when the short fibers in the outer peripheral region are oriented in the axial length direction, the bending rigidity can be improved efficiently, and it is easy to bend with a predetermined elastic force. To be able to. Further, since the short fibers 22 existing in the central region have anisotropy, the torsional strength of the discontinuous fiber reinforced resin portion 60 can be improved, and the breakage when the torsional stress is effectively prevented. Will be able to.

  Here, “the state of being oriented in the axial length direction on the outer peripheral side in the radial direction increases” means that the short fibers 22 in a state where a large number of them are dispersed in the synthetic resin when the tip is viewed in cross section (any position). It is possible to comprehend by comparing the ratio of the cross section of the circular shape. Specifically, when the diameter of the cross section at a certain position of the discontinuous fiber reinforced resin portion 60 is D, the circle of the short fiber 22 existing in the outer peripheral region rather than the circle having a radius of (1/2) / D. If the ratio of the shape is larger than the ratio of the short fibers 22 included in the inner region of the circle, the discontinuous fiber reinforced resin portion 60 is axially arranged on the surface side. It can be evaluated that a large number of short fibers 22 oriented in the long direction are arranged, whereby desired bending rigidity can be obtained and strength against torsion can be improved. In addition, about the orientation state of the short fiber 22 as shown in FIG. 4, it is realizable by the manufacturing method which is mentioned later.

  In FIG. 5, various joining forms of the discontinuous fiber reinforced resin portion 60 and the continuous fiber reinforced resin portion 62 that form the tip 12 are shown. 5A, the joining portion 65 of the discontinuous fiber reinforced resin portion 60 and the continuous fiber reinforced resin portion 62 has a tapered shape. Specifically, the distal end portion 62A of the continuous fiber reinforced resin portion 62 has a tapered outer surface 62a, while the proximal end portion 60A of the discontinuous fiber reinforced resin portion 60 tapers toward the distal end side ( It has a recessed portion 63 having a tapered inner surface 60a (spread toward the base end side), and the distal end portion 62A of the continuous fiber reinforced resin portion 62 is inserted into the recessed portion 63 of the discontinuous fiber reinforced resin portion 60. In this state, the discontinuous fiber reinforced resin portion 60 and the continuous fiber reinforced resin portion 62 are joined to each other. That is, in the joint portion 65, the discontinuous fiber reinforced resin portion 60 extends over the outer peripheral surface of the distal end portion 62 </ b> A of the continuous fiber reinforced resin portion 62. In such a joining form, even if rigidity is large, the advantage that the tip of a good tone of a connection is obtained is acquired.

  5B, the joint 65 of the discontinuous fiber reinforced resin portion 60 and the continuous fiber reinforced resin portion 62 has the same taper shape (therefore, FIG. 5A). Similar parts are indicated by similar reference numbers). However, in this case, the joint portion of the discontinuous fiber reinforced resin portion 60 extends over the entire outer peripheral surface of the continuous fiber reinforced resin portion 62. Such a bonding form may be easier to manufacture than the structure of FIG. 5B, and there is no resin joint, so that there is an advantage that the strength is not easily lowered.

  5 (c), the discontinuous fiber reinforced resin portion 60 and the continuous fiber reinforced resin portion 62 are joined by uneven fitting. Specifically, the base end portion 60 </ b> A of the discontinuous fiber reinforced resin portion 60 is provided with a recess 60 b extending in the axial direction from the end surface to the distal end side over a predetermined length. From the end surface of the distal end portion 62A, a convex portion 62b that can be fitted into the concave portion 60b protrudes toward the distal end side, and is continuous with the discontinuous fiber reinforced resin portion 60 by the fitting of the concave portion 60b and the convex portion 62b. The fiber reinforced resin part 62 is joined. In such a joining form, there is an advantage that the continuous fiber reinforced resin portion 62 can be bonded and connected later, and various types of connection can be easily realized by providing variations in the connecting portion.

  The discontinuous fiber reinforced resin portion 60 and the continuous fiber reinforced resin portion 62 may be joined by an injection molding method or a two-color molding method, which will be described later, or the discontinuous fiber reinforced resin portion 60. And the continuous fiber reinforced resin portion 62 may be separately molded and then adhered to each other.

  In the present embodiment, the tip 12 is formed by joining the discontinuous fiber reinforced resin portion 60 to the distal end side of the continuous fiber reinforced resin portion 62, but the tip 12 is formed of these two fiber reinforced resin portions. 60, 62 may be included, and other fiber reinforced resin portions may be further joined, or a plurality of discontinuous fiber reinforced resin portions 60 and a plurality of continuous fiber reinforced resin portions 62 may be arranged in various ways. They may be combined and joined in a form, and their arrangement form and joining form are arbitrary.

  An example in which the discontinuous fiber reinforced resin portion 60 and the continuous fiber reinforced resin portion 62 are joined by injection molding is shown in FIG.

  In this injection molding, a continuous fiber reinforced resin portion 62 manufactured in advance by a known molding method such as pultrusion molding is set in a mold 30 as shown in FIG. The discontinuous fiber reinforced resin portion 60 and the continuous fiber reinforced resin portion 62 are integrally molded (joined) by injecting the fiber reinforced resin material containing the above-described short fibers to form the fiber into the mold 30. .

  The mold 30 is constituted by molds 31 and 32 that are vertically opened. A cavity 35 that is an outer shape of the tip 12 is formed on the joint surfaces 31a and 32a of the molds 31 and 32, and each mold is formed. 31 and 32 are formed with gates 36 for injecting fiber reinforced resin into predetermined positions. The gate 36 communicates with the hollow portion 35 and opens to the side. The molding machine nozzle 40 is inserted into the opening 36a, and a fiber reinforced resin material is injected as indicated by an arrow.

  As described above, the fiber reinforced resin material to be injected is a thermoplastic resin containing 3 to 50 wt% of short fibers having an average fiber diameter of 3 μm to 15 μm and an average fiber length of 0.5 mm to 10 mm as a reinforcing material. Yes, it is injected at a predetermined temperature (plastic temperature of approximately 200 ° C.). In this case, the temperature of the mold 30 is set to be lower than the injected fiber reinforced resin material, and the injected fiber reinforced resin material is cooled and cured from the surface layer side in contact with the inner surface of the mold 30. It becomes possible to do. That is, since the fiber-reinforced resin material to be injected is in a state of flowing along the axial length direction of the tip 12, the contained short fibers 22 are directed in the axial length direction along the flow, In order to cure from the surface side in this flow state, the short fibers on the surface side tend to be oriented in the axial direction. However, in the central region, since there is time until curing, in a state where the flow is stopped (a state in which the fiber reinforced resin material is substantially filled), it is possible to vary somewhat freely. The direction of the short fiber becomes anisotropic.

  Thus, depending on the difference between the temperature of the fiber-reinforced resin material to be injected and the temperature of the mold, and the injection direction, the short fibers on the radially outer peripheral side are oriented in the axial length direction as described above, and the center It is possible to make the short fibers in the region anisotropic. Note that the arrangement state of the short fibers as shown in FIG. 4 can be changed depending on the injection pressure of the injected fiber reinforced resin material, the temperature difference from the mold, the position of the gate, the number of gates, and the like. .

  In this embodiment, a woven prepreg containing glass fibers at the interface between the discontinuous fiber reinforced resin portion 60 and the continuous fiber reinforced resin portion 62 (the resin impregnation amount is preferably 30 wt% to 80 wt%). May be provided to make the interface portion in a resin-rich state and make it difficult to peel off. Or processing which increases a contact area to each interface part (outer surface part or inner surface part) of the discontinuous fiber reinforced resin part 60 and the continuous fiber reinforced resin part 62 is performed so that the contact area of the interface part increases. Also good. Specifically, for example, roughening treatment by sandblasting or the like, scratching in a spiral (concave), forming a concave on the surface (can be changed by selection of the grindstone) by centerless processing, You may form an uneven | corrugated level | step difference, or may form the taper of the level | step difference which makes a diameter narrow toward a front-end | tip.

  Moreover, in order to improve the adhesiveness of the joint part of the discontinuous fiber reinforced resin part 60 and the continuous fiber reinforced resin part 62, in this embodiment, let the front-end | tip of the continuous fiber reinforced resin part 62 be a flat surface, and from the flat surface You may join the discontinuous fiber reinforced resin part 60 to the front end side area | region in the state which exposed the fiber. If it does in this way, the fiber exposed from a flat surface will produce the anchor effect in a junction part, and the adhesiveness of the joint part of the discontinuous fiber reinforced resin part 60 and the continuous fiber reinforced resin part 62 will increase. In order to increase the joint (connection) strength of the joint portion, a thread may be wound around and fixed to the outer periphery of the joint portion between the discontinuous fiber reinforced resin portion 60 and the continuous fiber reinforced resin portion 62. Alternatively, The legs of the guide for inserting the fishing line may be wound around the outer periphery of the joint.

  Moreover, in this embodiment, you may give the device for ensuring the smooth bending in the junction part of the discontinuous fiber reinforced resin part 60 and the continuous fiber reinforced resin part 62. FIG. That is, since the bending stiffness changes because the axial length direction fiber is lost at the joint, a large rigidity change does not occur in the region of the joint (a smooth bending state can be obtained). It is preferable to increase the diameter. That is, instead of reducing the surface shape to a tapered shape, the diameter may be increased so that, for example, a straight portion is generated in the middle. Alternatively, the end portion in the axial length direction of the continuous fiber reinforced resin portion 62 located at the joint portion may be formed in a polygonal shape (may be chamfered) or an arc shape so as to improve rigidity.

  Further, in the present embodiment, the discontinuous fiber reinforced resin portion 60 and the continuous fiber reinforced resin portion 62 are connected in the longitudinal direction (see FIG. 5), and therefore, different portions (shafts) of two or more kinds of materials on the longitudinal surface. Since there are a portion in which the reinforcing fibers are oriented in the long direction and a portion in which the short fibers are dispersed, the flexibility becomes different. When coating the surface in such a configuration, there may be a problem in adhesion with the coating. Therefore, it is preferable to form a coating by applying a primer that improves adhesion to at least one (preferably, one having a large curvature). In this case, examples of the primer include a urethane resin, an acrylic resin, an acrylic urethane resin, and an epoxy resin. Among these materials, a primer having a low hardness (soft) is particularly preferable.

  The tip 12 of the present embodiment can be manufactured by, for example, extrusion molding or pultrusion molding other than the above-described manufacturing method. In this case, since the tip is formed in a columnar shape, it can be formed into a desired shape by performing centerless processing thereafter.

  As described above, the tip 12 of the fishing rod 1 of the present embodiment is a discontinuous in which short fibers (short fibers having an average fiber diameter of 3 μm to 15 μm and an average fiber length of 0.5 mm to 10 mm) are dispersed in a matrix resin material. Since it has the fiber reinforced resin part 60, it can have the characteristic which is soft and hard to be damaged. That is, in the discontinuous fiber reinforced resin portion 60, since the reinforcing fibers do not extend from the base end to the tip end, the restriction due to the elongation of the reinforcing fibers is eliminated, and depending on the matrix resin material to be used, it is softer than the conventional one (breakage etc. It is possible to make a configuration that can be greatly displaced without the need to do so. In addition, this softening improves fish sensitivity during actual fishing, and also improves eye sensitivity (subtle displacement of the tip) and biting (fish does not release the needle) performance. . Furthermore, when designing with the same hardness and strength, since the elastic modulus is low, the outer diameter can be increased, and the assembly workability can be improved.

  In addition, the tip 20 of the fishing rod 1 of the present embodiment has a configuration in which the discontinuous fiber reinforced resin portion 60 is joined to the tip of the continuous fiber reinforced resin portion 62, so that it is soft and difficult to break, particularly at the tip side of the tip 12. In the joint portion 65, for example, the discontinuous fiber reinforced resin portion 60 extends over the whole or a part of the outer peripheral surface of the continuous fiber reinforced resin portion 62 as described above with reference to FIG. By forming various joining forms, it is possible to obtain a characteristic that is soft and difficult to break at a required degree in a required portion of the tip. Further, by arranging the discontinuous fiber reinforced resin portion 60 around the continuous fiber reinforced resin portion 62, an ideal connection tip can be realized.

  Although the embodiments of the present invention have been described above, the present invention can be modified as appropriate in addition to the above-described embodiments. For example, although the fishing rod of the present embodiment is configured to join a large number of rods, it may be configured as a single rod having the tip of the above-described characteristics. Moreover, although the cross-sectional shape of the tip is circular in cross section, the cross section may be non-circular such as elliptical.

1 Fishing rod 12
12A Taper 20 Matrix resin 22 Short fiber 60 Discontinuous fiber reinforced resin part 60b Concave part 62 Continuous fiber reinforced resin part 62A Tip part 62b Convex part 65 Joint part

Claims (8)

In a fishing rod having a tip made of fiber reinforced resin,
The tip is joined to a continuous fiber reinforced resin portion impregnated with a synthetic resin in which reinforcing fibers are continuously oriented from the base end to the tip, and the average fiber diameter is joined to the tip of the continuous fiber reinforced resin portion. A discontinuous fiber reinforced resin portion formed by dispersing short fibers having an average fiber length of 3 mm to 15 μm and an average fiber length of 0.5 mm to 10 mm in a matrix resin material at a content of 3 to 50 wt%. Fishing rod to do.   The fishing rod according to claim 1, wherein a joint portion between the discontinuous fiber reinforced resin portion and the continuous fiber reinforced resin portion is tapered.   3. The fishing rod according to claim 2, wherein the discontinuous fiber reinforced resin portion extends over an outer peripheral surface of a tapered tip portion of the continuous fiber reinforced resin portion in the joint portion.   The fishing rod according to claim 3, wherein the discontinuous fiber reinforced resin portion extends over the entire outer peripheral surface of the continuous fiber reinforced resin portion.   The fishing rod according to claim 1, wherein the discontinuous fiber reinforced resin portion and the continuous fiber reinforced resin portion are joined by uneven fitting.   The short fibers of the discontinuous fiber reinforced resin portion are dispersed in the matrix resin material so that there are many anisotropic states on the radially inner side and many states oriented in the axial length direction on the radially outer side. The fishing rod according to any one of claims 1 to 5, characterized by:   The fishing rod according to any one of claims 1 to 6, wherein a taper is formed on the tip so as to be reduced in diameter as it moves to the tip.   The fishing rod according to any one of claims 1 to 7, wherein the tip forms a tip rod in a state of being connected to a head holding tube.

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