Spider-Web Guitar Bracing for Sound Quality and Strength

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Solution Overview

Problem

Existing guitar bracing configurations, particularly the X-style bracing, do not adequately enhance sound quality and strength, leading to a need for an improved bracing configuration that can provide better tonal characteristics and structural integrity.

Innovation Solution

A spider-web style bracing system where main braces extend radially from the bridge plate to the soundboard edges, with some braces suspended and others fixed, and web braces connecting adjacent main braces at acute angles, eliminating lateral ladder bracing while maintaining strength and improving tone.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If X-style bracing is used, then structural strength is maintained, but sound quality enhancement is insufficient

Engineering Contradiction:
Improvestructural strengthVSAvoidsound quality
Core Design Contradiction:
StrengthVSReliability

Solution Approach 1:

The bracing system is divided into multiple discrete braces radiating from the bridge plate at specific angles (30°, 60°, 90°, 120°, 150°), with each brace serving as an independent structural element. This segmentation allows optimization of sound transmission paths while maintaining overall structural integrity, resolving the contradiction between strength and sound quality.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The bracing configuration uses asymmetric angular distribution of braces relative to the bridge plate, with specific angles (30°, 60°, 90°, 120°, 150°) designed to create non-uniform stress distribution and enhance sound transmission characteristics. This asymmetric arrangement improves tonal quality while maintaining structural strength.

Inventive Principle:
Principle #4Asymmetry

2Strength

If ladder-style bracing extends completely perpendicular from edge to edge, then structural support is maximized, but tonal characteristics are compromised

Engineering Contradiction:
Improvestructural supportVSAvoidtonal characteristics
Core Design Contradiction:
StrengthVSReliability

Solution Approach 1:

Instead of using traditional ladder-style bracing that extends perpendicular from edge to edge, the invention inverts the approach by using radial braces emanating from the bridge plate area. This inversion creates a spider-web pattern that provides structural support while allowing better sound transmission, thus improving tonal characteristics without sacrificing structural integrity.

Inventive Principle:
Principle #13The other way round (Inversion)

Solution Approach 2:

The bracing transitions from the traditional two-dimensional ladder pattern (edge-to-edge perpendicular strips) to a radial three-dimensional arrangement emanating from the bridge plate. This dimensional change allows braces to follow stress lines more effectively while creating gaps that improve sound transmission, resolving the contradiction between structural support and tonal quality.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Stability of the object's composition

If radial bracing extends from bridge plate to edges, then structural integrity is maintained, but manufacturing complexity increases

Engineering Contradiction:
Improvestructural integrityVSAvoidmanufacturing complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The bridge plate is designed as a pre-formed component with integrated brace attachments at specific angles (30°, 60°, 90°, 120°, 150°). By preparing the bridge plate in advance with built-in guidance features and attachment points, the radial braces can be installed more easily, reducing manufacturing complexity while maintaining structural integrity.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS9000282B1Guitar Bracing
Publication Date: 2015.04.07 BOOTH JASON
  • US9000282B1 patent drawing
  • US9000282B1 patent drawing
  • US9000282B1 patent drawing

AI summary

A guitar has improved bracing. Specifically, some embodiments have radial main braces which do not intersect a center of a bridge plate. Some embodiments have radial main braces which are connected by web braces. Some embodiments have suspended main braces extending from the bridge plate.