Fishing Reel Metal Front Cover for Level Wind Protection

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Solution Overview

Problem

Conventional fishing reels with plastic front covers suffer from reduced strength and limited design options due to thin, compact designs, leading to weakened protection for the level wind mechanism and uniform exterior aesthetics.

Innovation Solution

A fishing reel with a metal front cover made of high-strength lightweight materials like aluminum, featuring a detachable or integrated design that enhances protection and allows for various decorative options, while improving the frame's support and stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Weight of moving object

If the front cover is made of thin plastic material to achieve light and compact design, then the size and weight of the fishing reel are reduced, but the strength and protection capability for the level wind mechanism deteriorates

Engineering Contradiction:

Improveweight of front coverVSAvoidstrength of front cover

Core Design Contradiction:

Weight of moving objectVSStrength

Solution Approach 1:

The patent changes the material parameter from plastic to metal (aluminum), which fundamentally alters the strength-to-weight ratio. This material substitution allows the front cover to achieve both reduced weight and enhanced strength simultaneously, resolving the contradiction between lightweight design and protective capability.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent employs metal material (specifically aluminum) as a composite solution that combines the benefits of lightness and high strength. This material choice creates a composite effect where the front cover achieves optimal balance between weight reduction and structural integrity, protecting the level wind mechanism effectively.

Inventive Principle:

Principle #40Composite materials

2Ease of manufacture

If the front cover is made of plastic injection molding to simplify manufacturing, then the production process is easier, but the design flexibility and exterior quality are limited

Engineering Contradiction:

Improvemanufacturing process simplicityVSAvoiddesign flexibility

Core Design Contradiction:

Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The front cover is divided into multiple detachable parts including the main cover body, side walls, and level wind cover. This segmentation allows each component to be manufactured separately using appropriate methods (metal forming, machining) and then assembled, enabling both manufacturing feasibility and design flexibility for various configurations and decorative options.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces detachable and interchangeable components in the front cover assembly, allowing dynamic reconfiguration. Users can remove and replace parts such as the level wind cover and side walls, enabling versatile design applications and customization while maintaining ease of manufacture through standardized connection structures.

Inventive Principle:

Principle #15Dynamics

3Volume of moving object

If the front cover thickness is reduced to achieve compact design, then the size of the fishing reel is minimized, but the protection capability for the level wind mechanism deteriorates

Engineering Contradiction:

Improvevolume of front coverVSAvoidprotection capability

Core Design Contradiction:

Volume of moving objectVSReliability

Solution Approach 1:

By changing the material parameter from plastic to metal, the patent achieves higher strength density. This allows the front cover to maintain reduced volume for compact design while the metal material's inherent strength provides adequate protection for the level wind mechanism, resolving the contradiction between size minimization and reliability.

Inventive Principle:

Principle #35Parameter changes

4Device complexity

If the front cover is made as a single integrated piece to simplify structure, then the device complexity is reduced, but the design versatility and assembly flexibility are limited

Engineering Contradiction:

Improvestructural complexityVSAvoiddesign versatility

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The front cover is segmented into multiple functional parts including the main cover body, side walls, and level wind cover that can be detached. This segmentation increases design versatility and allows for interchangeable components while maintaining relatively simple individual part structures, resolving the contradiction between structural simplicity and design versatility.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS12439902B2Fishing reel having metal front cover

Publication Date: 2025.10.14 DOYO ENG

AI summary

Provided is a fishing reel having a front cover protecting a level wind, wherein the front cover is separately formed of a high strength lightweight metal material such as aluminum to protect the level wind more safe and the front cover is easily assembled with various designs to improve the exterior design, and the front cover allows a user to decorate and use the fishing reel on the basis of the user's preference. The fishing reel including the metal front cover includes a frame including side walls on opposite sides thereof and forming a spool mounting part and a level wind mounting part, and the front cover coupled to both front ends of the side walls on the opposite sides to protect a level wind, and made of a metal material and including a coupling part bent toward the frame and coupled to each of the side walls.