Bracing beam for fixing to an inner surface of a resonance board in a guitar body to reinforce the resonance board comprises a narrow part with a side that extends upward

摘要

Bracing beam for fixing to an inner surface of a resonance board in a body of a guitar to reinforce the resonance board comprises a narrow part to improve the flexibility and maintain the strength of the bracing beam so that resonance of the body of the guitar is improved. The narrow part has a cross- section with a profile of which one side extends vertically upward to a position (p) with a pre-determined height (h) to form a lower base part, then bends inward toward the center of the bracing beam, and extends upward at a pre- determined angle to form a tapering upper part (c).