Elastic Frame Member for Uniform Percussion Membrane Tension
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Solution Overview
Problem
Existing percussion instruments face challenges in uniformly applying tension to the membrane member using a tension ring, leading to uneven tension distribution across the membrane.
Innovation Solution
A percussion instrument design featuring a frame with a ring-shaped end portion, a membrane member, a ring-like frame member with elasticity, and a tension ring that tightens radially inward to uniformly apply tension by reducing the frame member's diameter, ensuring even pressure across the membrane.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a tension ring is used to apply tightening force to the frame member, then tension is applied to the membrane member, but the tension distribution becomes uneven across the membrane
Solution Approach 1:
A frame member with predetermined elasticity is introduced as an intermediary between the tension ring and the membrane member. This elastic frame member deforms uniformly under the tightening force of the tension ring, thereby distributing the tension evenly across the entire membrane member and eliminating the uneven tension distribution problem
Solution Approach 2:
The frame member is designed with specific elastic properties (predetermined elasticity) that allow it to deform in a controlled manner. By changing the physical parameter of elasticity, the frame member can uniformly transmit the tightening force from the tension ring to the membrane member, achieving uniform tension distribution
2Reliability
If the frame member is positioned above the frame support, then the membrane member is supported, but the tension ring cannot effectively apply radial tightening force
Solution Approach 1:
The frame member is positioned in the axial dimension below the frame support, creating a spatial separation between the support function (performed by the frame at the upper position) and the tension application function (performed by the tension ring at the lower position). This dimensional arrangement allows the tension ring to effectively apply radial tightening force to the frame member without interfering with the membrane support function
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
This design achieves uniform tension distribution across the entire membrane member, enhancing the instrument's performance and durability by preventing uneven stress and potential detachment.
Implementation Method 1
a ring-like frame member having a predetermined elasticity to which an outer edge of the membrane member is connected
Data Source
AI summary
A percussion instrument and a tension applying method are provided. A frame member where an outer edge of a membrane member is connected is arranged at the other side in the axial direction of a frame, and the frame member is tightened radially inward by a tension ring. The frame member has a predetermined elasticity, and a diameter of the frame member is reduced by a tightening force of the tension ring; thus, the tension may be applied to the membrane member by reducing the diameter of the frame member. That is, an edge portion of the membrane member may be uniformly pressed radially inward over the entire circumference by reducing the diameter of the frame member, and thus the tension may be uniformly applied to the entire membrane member.