Multi-Line-Eye Lure Structure for Snap-Free Position Switching

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Solution Overview

Problem

Existing lures with multiple line eyes require users to remove the snap connecting the line and line eye to change the line connection position, making it difficult to adjust the line connection position accurately.

Innovation Solution

A lure design featuring a plurality of line eyes connected via a communication hole, with partition walls and protrusions to prevent the line eye from changing during use, allowing easy adjustment of the line connection position without disassembly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a single line eye is used with a movable plate-like member, then the line connection position can be adjusted, but the connection position becomes unstable and may displace from the desired position

Engineering Contradiction:

Improveline connection position adjustmentVSAvoidline connection position stability

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The lure body is segmented into multiple line eyes (first line eye, second line eye, third line eye) arranged in the forward-rearward direction, allowing the user to select different connection positions while maintaining stability through the partition wall structure that prevents unintended movement between eyes

Inventive Principle:

Principle #1Segmentation

2Adaptability or versatility

If multiple line eyes are provided, then the line connection position can be changed, but the user must remove the snap to change the line eye, making the task difficult

Engineering Contradiction:

Improveline connection position optionsVSAvoidline eye switching operation

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

A communication hole is introduced as an intermediary passage that connects the first line eye to the second line eye and the third line eye, allowing the snap to be moved between line eyes without removing it from the line, thus enabling easy switching while maintaining the snap's connection state

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The snap is designed to be movable along the communication hole between different line eyes, transforming from a static connection to a dynamic one that can shift position easily while maintaining secure attachment to whichever line eye it is currently connected to

Inventive Principle:

Principle #15Dynamics

3Ease of operation

If the snap is made movable between line eyes, then the line connection position can be changed easily, but the snap may enter the communication hole during use, causing the line eye to change

Engineering Contradiction:

Improveline eye switchingVSAvoidline eye position stability during use

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

A protrusion is added to the snap as a preliminary anti-action mechanism that prevents the snap from entering the communication hole during normal use, while still allowing the snap to be moved between line eyes when the user intentionally activates the switching mechanism

Inventive Principle:

Principle #9Preliminary anti-action

Data Source

PatentUS20260076353A1Lure

Publication Date: 2026.03.19 SHIMANO INC

AI summary

A lure comprises a plurality of line eyes. The plurality of line eyes can be connected to a line. The plurality of line eyes are connected to each other via a communication hole.