Fishing Rod Line Guide Group Segmentation for Sensitivity

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Fishing rods experience decreased strike sensitivity, increased holding weight, and reduced flying distance of weights or lures due to inadequate line guide configurations, which hinder the full utilization of the rod blank's potential.

Innovation Solution

A line guide group comprising a choke guide group with a cone-shaped configuration of varying diameters and a tip guide group with uniform, smaller dimensions is used, where the choke guides are 1.5 to 6 times larger in diameter and 2 to 5 times taller than the tip guides, and the tip guides have larger attaching legs for enhanced rigidity and weight savings.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If guides with gradually decreasing height and diameter are used from reel to top guide, then the line guide configuration is conventional and simple, but strike sensitivity decreases, holding weight increases, and flying distance is not increased

Engineering Contradiction:
Improvestrike sensitivityVSAvoidholding weight
Core Design Contradiction:
ReliabilityVSWeight of moving object

Solution Approach 1:

The line guide group is segmented into three functional groups: choke guide group (for rapid convergence), tip guide group (for weight savings and sensitivity), and intermediate guide group (for transition). This segmentation allows each group to be optimized for its specific function, resolving the contradiction between strike sensitivity and holding weight.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different guide groups are assigned different local qualities: choke guides have larger diameter for convergence, tip guides have smaller diameter for sensitivity and weight reduction. This local differentiation optimizes performance at each location along the rod, improving strike sensitivity while reducing overall weight.

Inventive Principle:
Principle #3Local quality

2Productivity

If choke guides with larger diameter are used to converge line rapidly, then line convergence is improved, but convergent resistance increases

Engineering Contradiction:
Improveline convergence speedVSAvoidconvergent resistance
Core Design Contradiction:
ProductivityVSLoss of energy

Solution Approach 1:

The choke guide group is positioned specifically between the reel and the top guide, separating the convergence function from the transmission function. This allows rapid convergence to occur in a dedicated zone, minimizing energy loss while achieving the desired line gathering effect.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The choke guides perform preliminary convergence action on the line before it reaches the tip guide group. By pre-converging the line in the choke guide group, the subsequent transmission through the lighter tip guides is more efficient, reducing overall convergent resistance.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS8850740B2Fishing rod
Publication Date: 2014.10.07 FUJI IND CO LTD
  • US8850740B2 patent drawing
  • US8850740B2 patent drawing
  • US8850740B2 patent drawing

AI summary

A fishing rod has a rod blank, and a line guide group attached to the rod blank for guiding a fishing line delivered from a reel to a top guide. The, line guide group is classified into a choke guide group configured with three choke guides and a tip guide group configured with a plurality of tip guides having a decreased height and diameter than the choke guides. Heights and diameters of the choke guides are set to draw one virtual cone shape in which the diameters are made to be circumferences. The heights and diameters of the tip guides are set to be all the same. Since the line is converged rapidly and smoothly, the tip guide group can have a combination of light guides having small diameter, thereby the entire weight can be saved greatly, and original ability of a rod can be brought out.