JP3534376B2 - Through fishing rod - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a through fishing rod having a spiral fishing line guide disposed therein. The spiral fishing line guide may be integral with or separate from the rod tube. 2. Description of the Related Art In a through fishing rod, a fishing line guide is generally provided inside the rod tube in order to prevent the line from coming into contact with the inner surface of the rod tube to increase the line resistance. . The line guide includes a ring-shaped line guide and a spiral line guide. The spiral type is used because of its ease of disposition inside the rod tube and low cost. [0003] However, when the rod pipe provided with the spiral fishing line guide is largely bent by a load, the fishing line is substantially received only by the local fishing line guide portion at the position where the bending curvature is large. become. Therefore, simply devising the cross-sectional shape of the spiral fishing line guide itself is not sufficient, and the cross-sectional shape of the spiral fishing line guide in a cross section that is a direction orthogonal to the longitudinal direction of the rod pipe is close to the ring-shaped fishing line guide. In the case of the form, the receiving state of the fishing line is good and the fishing line is appropriate as a fishing line guide. However, if the cross-sectional circumferential shape is formed in a convex shape, the fishing line is likely to come off from the convex fishing line guide surface and is not suitable as a fishing line guide. Is appropriate. However, if the cross-sectional shape in the cross section is close to the state where the spiral guide member covers most of the inner circumference of the rod pipe, such as a form close to the ring-shaped fishing line guide, it is the same as the case where the rod pipe is made thicker than necessary The weight increases, which is against the weight saving of the fishing rod. In addition, if the reinforcement region of the fishing line guide is concentrated only in the local portion of the inner circumference, stress concentration is likely to occur when the rod pipe is bent. SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a fishing rod capable of guiding a fishing line in a reinforced region of a guide even when a rod tube is bent while preventing a stress concentration while keeping weight reduction. [0005] In view of the above-mentioned object, the present invention provides a helical fishing line guide provided in a rod pipe, and an axial length of the rod pipe provided with the helical fishing line guide. In a cross section perpendicular to the direction, the guide has a reinforced region in which a large amount of reinforcing material is provided, and a resin region mainly composed of resin on both sides thereof, and the inner periphery of the resin region is reinforced. While being substantially continuous with the inner periphery of the region, the inner peripheral shape of the reinforced region is generally concave or planar, and when the outer peripheral center position of the reinforced region is the lowest, the resin region is separated from the reinforced region. The thickness of the fishing rod is generally gradually reduced in accordance with the following formula, and the end of the fishing rod is located at a position of 90 degrees or less in the circumferential direction from the central position and higher than the reinforcing region. . The inner periphery of the resin region mainly composed of resin on both sides of the reinforcing region is substantially continuous with the inner periphery of the reinforcing region, and the thickness of the resin region gradually decreases as the distance from the reinforcing region increases. The stress concentration on the rod pipe at both ends of the rod can be prevented. Further, even if the resin region and the reinforced region are combined, it is less than or equal to half the inner circumference of the rod pipe, so that the weight can be reduced. Furthermore, the inner periphery of the resin region is substantially continuous with the inner periphery of the reinforced region, and the inner peripheral shape of the reinforced region is generally concave or planar, and the resin is formed when the outer peripheral center position of the reinforced region is the lowest. Since the end of the region is located higher than the reinforced region, even if the fishing line is located in the resin region, the fishing line immediately falls down to the reinforced region having excellent wear resistance and stabilizes. "The inner periphery of the resin region is substantially continuous with the inner periphery of the reinforced region, and the inner peripheral shape of the reinforced region is generally concave or planar." It is expressed as a structural requirement for being located in the strengthening area, and generally includes a form in which this action occurs. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. FIG. 1 is a longitudinal sectional view of a main part of the through fishing rod, and FIG. 2 is an enlarged transverse sectional view taken along line BB of the arrow, that is, a transverse sectional view in a direction orthogonal to the axial length direction of the rod tube 10. . A fishing line guide G having a helical shape and continuous for a predetermined length is integrated with the inside of a rod tube 10 reinforced with a fiber such as a carbon fiber or the like using a resin such as an epoxy resin as a matrix in this embodiment. The spiral fishing line guide is mainly composed of a string-shaped guide element formed by impregnating a bundle of reinforcing fibers C such as carbon fibers with a resin such as an epoxy resin, and is heated and cured together with the material of the rod tube 10 to form a rod. It is integrated with the tube 10. Resin regions G2 and G3 mainly composed of resin are provided on both sides of the reinforcing region G1 containing a large amount of the reinforcing fibers C, continuously to the reinforcing region G1. Moreover, the inner periphery G2S, G3S of each resin region is substantially continuous with the inner periphery G1S of the reinforced region G1, and the thickness of the resin region is the same as the reinforced region G1
The thickness gradually becomes thinner as the distance increases. Thus, the end positions of the resin region are angles α1 and α2, respectively, measured from the center position of the reinforced region G1 and are both 90 ° or less. When the center position of the outer periphery GS of the reinforced region is the lowest, the reinforced region It is at a position higher than G1. Furthermore, the shape of the inner periphery G1S of the strengthening region G1 is substantially concave or planar. Therefore, when the rod tube is bent, the rod tube 1 at the both end positions of the reinforcing region, that is, at the boundary position with each resin region, is provided.
Since the stress concentration of 0 can be prevented and the thickness of the resin region is gradually reduced, the stress concentration is also prevented. Further, since the entire fishing line guide G including the reinforcing region and the resin region is not more than half the circumference of the rod 10 in FIG. 2, even if the fishing line guide is provided, an increase in weight can be suppressed. Further, the fishing line is stably guided by the inner periphery G1S of the reinforcing region located at a position lower than the inner periphery of the resin region. Further, since the inner peripheral shape of the reinforced area is generally concave or planar, the fishing line tends to stay on the inner periphery of the reinforced area, and the guiding state is stabilized. The reinforcing member in the reinforcing region is the reinforcing fiber C in the above embodiment, but is not limited to this, and may be any type such as particles harder than resin or a fibrous material shorter than resin. The resin is preferably the same (or the same) as the resin used for the rod tube 10 for integration, but the helical fishing line guide G is arranged so as to be separable from the rod tube 10. It may be provided. Furthermore, as shown in FIG. 3, the substantially continuous inner periphery, the substantially concave shape, or the planar shape as referred to in the present application refers to, for example, a partially convex portion T (or a partially (Recess) does not exclude this, and
Even if similar irregularities are present on the inner periphery of the resin region, this is not intended to exclude them. In short, it is a requirement that the fishing line is located not in the resin region but in the inner periphery of the reinforcement region. As an example, as shown in the cross-sectional view of the spiral fishing line guide G shown in FIG. 1, if the illustrated inner peripheral line G1S 'of the reinforcing area G1 is a straight line, the crossing along the line BB is taken. On the surface, the inner peripheral shape of the reinforced region G1 is concave as shown in FIG. Even if the inner peripheral line G1S ′ is not a straight line,
Even a gentle convex shape generally has a concave shape in FIG. However, if the helix angle θ measured on the basis of the cross section is too large, it is difficult to form a concave shape in FIG.
The spiral angle θ is set to 45 degrees or less. Preferably 10
Set to 35 degrees. However, the point is that the inner peripheral shape of the reinforcing region in FIG. 2 only needs to be concave or flat, and the sectional shape itself in FIG. 1 is not limited. As is apparent from the above description, according to the present invention, the fishing line is provided in the reinforced region of the guide even when the rod tube is bent while preventing stress concentration while maintaining weight saving. Can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view of a main part of a fishing rod according to the present invention. FIG. 2 is an enlarged cross-sectional view taken along line BB of FIG. 1; FIG. 3 is a diagram showing a modified example instead of FIG. 2; [Description of Signs] 10 Rod Pipe G Spiral Fishing Line Guide G1 Reinforced Area G1S Reinforced Area Inner Periphery G2, G3 Resin Area G2S, G3S Reinforced Area Inner Perimeter

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-9-187194 (JP, A) JP-A-9-140295 (JP, A) JP-A-3-67554 (JP, U) JP-A-9-187554 (JP, U) 304836 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A01K 87/00-87/06

Claims (1)

(57) [Claim 1] A helical fishing line guide is disposed in a rod pipe, and a direction orthogonal to the axial length direction of the rod pipe in which the helical fishing line guide is disposed. In the cross section, the guide has a reinforced region in which a large amount of reinforcing material is provided, and a resin region mainly composed of resin on both sides of the reinforced region. The inner periphery of the resin region is substantially continuous with the inner periphery of the reinforced region. In addition, the inner peripheral shape of the reinforced region is substantially concave or flat, and when the outer peripheral center position of the reinforced region is the lowest, the thickness of the resin region generally gradually decreases as being separated from the reinforced region. In addition, the end fishing rod is located 90 degrees or less in the circumferential direction from the center position and higher than the reinforcing region.