Fishing Rod Handle Member Inner Surface Processability

Solution Overview

Problem

Existing fishing rod reel seats and handle members face issues with inner surface processability due to the absence of resin and fiber fuzz, leading to difficulties in achieving design target performance and molding challenges.

Innovation Solution

A fishing rod handle member is formed with an outer layer of carbon fiber reinforced plastic and an inner layer of resin, providing high inner surface processability and reducing the likelihood of resin and fiber fuzz, while maintaining structural integrity and sensitivity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If an intermediate layer elastically deformable even after baking is interposed between layer bodies in which reinforcing fibers and thermosetting resin are integrally formed, then the rod body can be formed with flexible molding capabilities, but the inner surface processability deteriorates and fiber fuzz and void occur on the inner surface

Engineering Contradiction:

Improvemolding flexibilityVSAvoidinner surface processability

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The rod body is segmented into multiple layers: outer layer bodies with reinforcing fibers for strength, an intermediate layer for elastic deformation and molding flexibility, and an inner layer without fibers for smooth inner surface. This segmentation allows each layer to perform its specific function without compromising others.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the rod body have different qualities: the outer layer has high strength and rigidity for structural integrity, the intermediate layer has elasticity for molding flexibility, and the inner layer has smooth surface quality for processability. Each layer is optimized for its local function.

Inventive Principle:

Principle #3Local quality

2Strength

If carbon fiber reinforced plastic is used for the outer layer to ensure strength and rigidity, then the structural integrity is improved, but the inner surface processability deteriorates due to fiber fuzz

Engineering Contradiction:

Improvestructural integrityVSAvoidinner surface processability

Core Design Contradiction:

StrengthVSManufacturing precision

Solution Approach 1:

The rod body is segmented into multiple layers: outer layer bodies with reinforcing fibers for strength, an intermediate layer for elastic deformation and molding flexibility, and an inner layer without fibers for smooth inner surface. This segmentation allows each layer to perform its specific function without compromising others.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the rod body have different qualities: the outer layer has high strength and rigidity for structural integrity, the intermediate layer has elasticity for molding flexibility, and the inner layer has smooth surface quality for processability. Each layer is optimized for its local function.

Inventive Principle:

Principle #3Local quality

3Stability of the object's composition

If a through hole that allows permeation of part of two layer bodies into the intermediate layer is formed to integrate the layer bodies, then the structural integration is improved, but the inner surface processability deteriorates due to resin absence and fiber fuzz

Engineering Contradiction:

Improvelayer integrationVSAvoidinner surface processability

Core Design Contradiction:

Stability of the object's compositionVSManufacturing precision

Solution Approach 1:

The rod body is segmented into multiple layers: outer layer bodies with reinforcing fibers for strength, an intermediate layer for elastic deformation and molding flexibility, and an inner layer without fibers for smooth inner surface. This segmentation allows each layer to perform its specific function without compromising others.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the rod body have different qualities: the outer layer has high strength and rigidity for structural integrity, the intermediate layer has elasticity for molding flexibility, and the inner layer has smooth surface quality for processability. Each layer is optimized for its local function.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS20230363367A1Reel seat for fishing rod, handle member for fishing rod, and fishing rod

Publication Date: 2023.11.16 DAIWA SEIKO CORPORATION

AI summary

There is provided a fishing rod reel seat, a fishing rod handle member comprising the reel seat, and a fishing rod comprising the fishing rod reel seat and the fishing rod handle member, in which the inner surface processability is high, and the absence of resin and the fiber fuzz on an inner surface are less likely to occur. According to an embodiment of the present disclosure, there is provided a fishing rod handle member made by integrally molding a reel seat main body having a reel leg placing portion on which a reel leg is placed and a grip connected to the reel seat main body, in which an outer layer of the fishing rod handle member is formed of carbon fiber reinforced plastic and an inner layer of the fishing rod handle member is formed of resin.