Annular Drum Hoop Curved Segment Noise Reduction
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Solution Overview
Problem
Conventional annular drum hoops made of iron or zinc alloy generate noise and echo when a drum is beaten, causing drumsticks to wear off quickly and are expensive, especially those made of zinc alloy.
Innovation Solution
An annular drum hoop with a curved segment that protrudes inward from the outer ring, forming a space to redirect sound waves and featuring a smooth, curved surface to prevent drumstick wear, made of iron to reduce costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If an extending flange with a sharp outer edge is formed on the annular drum hoop, then the drum hoop can effectively press against the drumhead to maintain tension, but the drumsticks will be worn off quickly when knocking against the sharp edge
Solution Approach 1:
The patent replaces the sharp outer edge of the extending flange with a curved surface. The extending flange is formed with a curved outer edge that protrudes outward from the outer ring, eliminating the sharp edge that causes drumstick wear while maintaining the structural function of pressing against the drumhead.
2Strength
If an extending flange is formed on the annular drum hoop, then the drum hoop can press against the drumhead effectively, but it will resonate with the drumhead and generate noise and echo
Solution Approach 1:
The extending flange is designed with a curved outer edge instead of a straight edge, and the curved surface configuration helps reduce resonance with the drumhead, thereby minimizing noise and echo generation while maintaining effective drumhead pressing.
3Strength
If zinc alloy is used to manufacture the annular drum hoop, then the drum hoop has good strength and durability, but the cost is expensive
Solution Approach 1:
The patent changes the material parameter from zinc alloy to iron for manufacturing the annular drum hoop. This material substitution reduces manufacturing cost while maintaining the structural strength and durability required for drum hoop functionality.
4Ease of manufacture
If a straight outer edge is formed on the extending flange, then the manufacturing process is simple, but the drumsticks will be worn off when knocking against the edge
Solution Approach 1:
The outer edge of the extending flange is formed with a curved configuration instead of a straight edge. This curved design prevents drumstick wear by eliminating sharp contact points, while the curvature can be incorporated into the manufacturing process through standard forming techniques.
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 annular drum hoop effectively reduces noise and echo, prolongs drumstick life by preventing wear, and offers a more affordable option compared to zinc alloy hoops while maintaining sound quality.
Implementation Method 1
the curved segment is formed on and protrudes inwards from the free edge of the outer ring and has an inner surface, a curved outer surface and an engaging groove formed in the inner surface
Data Source
AI summary
An annular drum hoop for a drum having a cylindrical drum shell, two drumheads and multiple tension control devices and the annular drum hoop has an outer ring, a mounting segment, an inner ring, multiple holding mounts and a curved segment. The mounting segment is formed on the outer ring. The inner ring is formed annularly on the mounting side of the annular drum hoop and is formed with the mounting segment. The holding mounts are formed on the annular drum hoop between the mounting segment and the inner ring at intervals and each holding mount has a through hole formed through the holding mount to mount on one of the tension control devices. The curved segment is formed on and protrudes inwards from the free edge of the outer ring and has an inner surface, a curved outer surface and an engaging groove formed in the inner surface.