Electronic Percussion Instrument Cover Inclination
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Solution Overview
Problem
Conventional electronic percussion instruments face challenges in accurately detecting percussions from lateral directions due to deformation of the cover when subjected to strong percussion forces, leading to inadequate pressure on the edge sensor and reduced detection accuracy.
Innovation Solution
The electronic percussion instrument features a sensor frame with a sensor installation surface inclined towards the outer circumference, a cover formed of an elastic body with specific parts (upper, lateral, and lower cover parts) that cover the sensor, and a vertex located between defined virtual lines, ensuring accurate percussion detection by pressing against the sensor upon deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the cover is made of rigid material for structural stability, then manufacturing precision and assembly durability are improved, but percussion detection accuracy deteriorates when strong lateral percussion forces cause deformation
Solution Approach 1:
The patent changes the material parameter from rigid to elastic, allowing the cover to deform under percussion forces and return to its original shape. This elastic deformation enables the cover to maintain contact with the sensor during lateral percussion while still providing structural coverage, resolving the contradiction between durability and detection accuracy.
Solution Approach 2:
The cover is designed to be dynamically deformable rather than statically rigid. The elastic material allows the cover to adapt its shape in response to percussion forces, maintaining functional contact with the sensor while accommodating lateral striking directions. This dynamic behavior ensures consistent sensor activation across different percussion orientations.
2Ease of manufacture
If the sensor installation surface is made flat for easy manufacturing, then manufacturing precision is improved, but percussion detection accuracy from lateral directions deteriorates due to insufficient sensor activation
Solution Approach 1:
The sensor installation surface is designed with an asymmetric inclined configuration rather than a flat symmetric surface. This inclination angles the sensor activation area to better receive force vectors from lateral percussion directions, improving detection accuracy while remaining manufacturable through standard machining processes.
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 configuration enhances percussion detection accuracy by ensuring consistent deformation and pressure on the sensor, improving the durability and reliability of percussion detection across various striking directions.
Implementation Method 1
the cover is formed of an elastic body covering an outer edge portion of the sensor frame including the sensor
Data Source
AI summary
A sensor installation surface 211b provided at an arced part 211 of a first frame 301a is inclined to descend toward an outer circumferential side, and a vertex P1 of a cover 306 is located between a first virtual line V1 and a second virtual line Vb. Accordingly, even in the case where the vertex P1 of the cover 306 is percussed in an arbitrary direction, the cover 306 (an upper cover part 260) is deformed easily toward an edge sensor S3. Accordingly, the percussion to an edge portion (the cover 306) of the first frame 301a can be accurately detected.