Flute Head Joint Stopper Seal with O-Ring
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Solution Overview
Problem
Cork stoppers in flutes suffer from excessive dampening, moisture-induced deterioration, and air leaks, which negatively impact sound quality and reliability over time.
Innovation Solution
A mechanical plug with O-ring securing means and flute crown screw securing means, such as a nut or compression fitting, is used to create an airtight seal within the head joint, allowing for adjustable sealing and improved durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If cork is used as a stopper, then the stopper is lightweight, easily shaped, and low cost, but it provides excessive dampening that adversely affects sound quality
Solution Approach 1:
The harmful dampening property is extracted from the stopper system by removing the cork material entirely and replacing it with a mechanical plug made of non-dampening materials such as metal or plastic, while retaining the essential stopper function
Solution Approach 2:
The stopper is constructed using composite materials including an O-ring made of elastomeric material combined with a mechanical plug, creating a multi-material assembly that achieves both sealing and acoustic performance without the dampening problems of pure cork
2Weight of moving object
If cork is used as a stopper, then the stopper is lightweight and low cost, but it deteriorates with moisture exposure and develops air leaks over time
Solution Approach 1:
The material parameters are changed from organic cork to inorganic or synthetic materials (metal, plastic, elastomeric O-ring) that do not degrade with moisture exposure, fundamentally altering the chemical and physical stability parameters of the stopper
Solution Approach 2:
A composite structure combining a mechanical plug with an O-ring sealing element creates a stopper that leverages the moisture resistance of synthetic materials while maintaining the lightweight property through careful material selection and design
3Reliability
If a mechanical plug with O-ring is used, then an airtight seal is achieved, but the device complexity increases compared to simple cork stoppers
Solution Approach 1:
The O-ring functions as a flexible sealing film that conforms to the bore surface, providing an airtight seal through its elastic deformation capability rather than requiring complex rigid sealing mechanisms
Solution Approach 2:
The O-ring acts as an intermediary sealing element between the mechanical plug and the flute bore, mediating the sealing function and allowing the rigid plug to be inserted and removed while maintaining an airtight connection
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The mechanical plug provides a consistent, airtight seal that maintains sound quality and resistance to environmental conditions, reducing air leaks and extending the flute's performance stability.
Implementation Method 1
O-ring securing means
Data Source
AI summary
A flute stopper having at least one sealing means able to seal the musical cavity and translation means to adjust the positioning of said seal. Said flute stopper is designed to be capable of interfacing with the original factory screw, nut and crown via nuts and/or fittings, including either compression or NPT fittings. Both or either end of said plug may be tapered to facilitate said interfacing.