Foldable Guitar Actuator System for Tuning Stability

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Solution Overview

Problem

Conventional stringed instruments, such as guitars, are cumbersome for travel due to their bulk and require additional cases, with existing attempts at making them more portable often resulting in scaled-down versions that compromise on tuning and playability.

Innovation Solution

A foldable stringed instrument equipped with an actuator system that facilitates string management and folding/unfolding by loosening/tightening strings and unlocking/locking the neck hinge, allowing the instrument to assume a reduced profile for easier storage and transport.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a solid neck rigidly coupled to body is used, then predictable tuning and quality of play are improved, but portability and ease of travel deteriorate

Engineering Contradiction:
Improvepredictable tuningVSAvoidportability
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The neck is divided into multiple segments that can be folded relative to each other, allowing the instrument to be collapsed into a compact form for portability while maintaining structural integrity for stable tuning when assembled

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The neck transitions from a static rigid structure to a dynamic foldable structure with hinges and locking mechanisms, enabling it to adapt between extended (playable) and collapsed (portable) states while maintaining stability during play

Inventive Principle:
Principle #15Dynamics

2Ease of operation

If a solid neck rigidly coupled to body is used, then quality of play is improved, but device size and bulk increase

Engineering Contradiction:
Improvequality of playVSAvoidinstrument bulk
Core Design Contradiction:
Ease of operationVSVolume of moving object

Solution Approach 1:

The neck is segmented into foldable sections that can be collapsed to reduce overall instrument volume for storage and travel, while maintaining full length and playability when assembled

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The foldable neck segments nest within each other when collapsed, significantly reducing the instrument's bulk while maintaining the full extended length required for quality play when assembled

Inventive Principle:
Principle #7Nested doll (Nesting)

3Ease of operation

If the neck is made foldable, then portability is improved, but string management and tuning stability deteriorate

Engineering Contradiction:
ImproveportabilityVSAvoidtuning stability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The actuator system performs preliminary actions by automatically adjusting string tension and locking the neck hinge in position during folding/unfolding, preventing tuning instability before it occurs

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The actuator system enables the instrument to self-adjust string tension and lock mechanical components during folding operations, maintaining tuning stability without requiring manual intervention

Inventive Principle:
Principle #25Self-service

4Ease of operation

If a foldable mechanism is added, then portability is improved, but device complexity increases

Engineering Contradiction:
ImproveportabilityVSAvoidmechanism complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The actuator system combines multiple functions (string tension adjustment, neck hinge locking, and folding control) into a single integrated mechanism, reducing overall complexity despite adding foldable capability

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentUS12142248B1Foldable stringed instrument and related methods
Publication Date: 2024.11.12 CIARI GUITARS INC
  • US12142248B1 patent drawing
  • US12142248B1 patent drawing
  • US12142248B1 patent drawing

AI summary

An actuator system for a foldable stringed instrument (for example, a travel guitar). The actuator system serves two primary function: 1) to selectively retract and extend a ram rod used to unlock and lock a mid-neck hinge of the foldable stringed instrument.