Vent Spanner and Pad Prop for Musical Instrument Drying
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Solution Overview
Problem
Musical instrument pads that remain normally closed tend to degrade faster due to moisture and bacterial accumulation, leading to stickiness and mechanical malfunctions, requiring more frequent replacement and affecting sound quality.
Innovation Solution
The use of vent spanners and pad props that create an air gap between pads and vents, allowing for airflow and drying, with features like positioning and retention mechanisms to maintain stability and prevent sealing, and linkage features for easy storage and connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pads remain normally closed on vents, then the instrument maintains proper sealing and airtightness, but moisture and bacteria accumulate causing pad degradation and stickiness
Solution Approach 1:
The patent applies preliminary action by placing a vent spanner or pad prop on the instrument before storage, which proactively prevents pad degradation by maintaining an open position that allows airflow and drying, thereby avoiding moisture and bacteria accumulation before it occurs
Solution Approach 2:
The vent spanner acts as an intermediary device placed between the pad and vent, physically preventing the pad from sealing the vent completely while allowing controlled airflow, thus mediating between the need for sealing and the need for drying
2Object-affected harmful factors
If pads are kept open to allow drying, then moisture and bacteria accumulation is reduced, but the instrument loses airtightness and proper sealing
Solution Approach 1:
The patent applies local quality by creating a localized open state only at the vent area where the pad spanner is placed, allowing drying airflow specifically at that location while the rest of the instrument's pads remain closed and maintaining overall sealing integrity
Solution Approach 2:
The pad spanner applies partial action by opening the pad only enough to create sufficient airflow for drying, rather than completely removing the sealing function, thus achieving the drying effect while maintaining adequate instrument sealing
3Object-affected harmful factors
If reeds are placed between vent and pad to expose pad to air, then pad drying is improved, but reed positioning is difficult and damage can occur
Solution Approach 1:
The patent replaces the reusable reed with a disposable or easily replaceable vent spanner made of durable materials, which serves the same drying function without the positioning and damage problems associated with reeds
Solution Approach 2:
The patent changes the material parameter from organic reed material to inorganic spanner materials like plastic, metal, or wood, which provide dimensional stability and resistance to moisture, eliminating the positioning and degradation issues of reeds
4Object-affected harmful factors
If flexible wire is used to press key touch to keep pads open, then pad opening is achieved, but device complexity increases and instrument case compatibility is reduced
Solution Approach 1:
The patent extracts the drying function from complex wire mechanisms and implements it through simple passive mechanical devices (vent spanners or pad props) that rely on basic mechanical principles rather than complex actuation systems
Solution Approach 2:
Instead of using active mechanisms (wire pressing key touches) to open pads, the patent uses passive mechanical blocks (vent spanners) that physically prevent pad closure, inverting the approach from active opening to passive blocking
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
Significantly reduces pad rot and stickiness, minimizes mechanical malfunctions, and extends the lifespan of musical instrument pads, as demonstrated by a 129-day test showing reduced incidents of malfunction and pad unsticking compared to instruments without these devices.
Implementation Method 1
create an air gap so that air can flow across the pad and into the instrument
Data Source
AI summary
Systems for raising pads on musical instruments to enable drying of pads and increase air flow around the pad and a body of the musical instrument. A vent spanner device, including a positioning feature and a retention feature, is placed between a pad and its corresponding vent to create an air gap. A pad prop is placed against a key mechanism or between the key mechanism and/or the body to raise a pad from sealing its corresponding vent. A linkage feature connects one or more vent spanners, pad props, end pieces, key mechanisms, or the body, and provides storage.