Elastic Body Attachment for Percussion Instrument Head

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Solution Overview

Problem

Conventional percussion instruments require a recess in the hoop to attach the elastic body, which increases the radial thickness of the hoop and subsequently the size of the instrument.

Innovation Solution

The proposed solution involves an elastic body with a struck part, insertion parts, and a hook part that attaches to the head of the percussion instrument, eliminating the need for a recess in the hoop and allowing for a thinner hoop design.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a recess is formed on the inner peripheral surface of the hoop to attach the elastic body, then the elastic body can be securely attached, but the radial thickness of the hoop must be increased, resulting in an increased size of the percussion instrument

Engineering Contradiction:

Improveattachment securityVSAvoidinstrument size

Core Design Contradiction:

ReliabilityVSVolume of moving object

Solution Approach 1:

The attachment function is segmented between the head (providing attachment holes) and the elastic body (providing insertion parts with hook parts). This separates the attachment mechanism from the hoop structure, eliminating the need for recesses in the hoop while maintaining secure attachment.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The head serves as an intermediary component between the hoop and the elastic body. The attachment holes in the head provide a mounting interface for the insertion parts, eliminating the need for the hoop to directly engage with the elastic body through recesses.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If a recess is formed on the inner peripheral surface of the hoop, then the elastic body can be attached, but the structural complexity of the hoop increases

Engineering Contradiction:

Improveattachment capabilityVSAvoidhoop structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The attachment functionality is segmented from the hoop to the head and elastic body components. The hoop becomes a simpler tensioning element without recesses, while the attachment mechanism is distributed across the head (attachment holes) and elastic body (insertion parts with hook parts).

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The attachment mechanism is extracted from the hoop structure and relocated to the head and elastic body. This removes the complex recess features from the hoop, simplifying its geometry and manufacturing while preserving the attachment capability through the insertion parts and hook parts.

Inventive Principle:

Principle #2Taking out (Extraction)

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 reduces the size of the percussion instrument while maintaining the functionality of the elastic body, and also simplifies the attachment process, improving work efficiency.

Implementation Method 1

The insertion part is inserted into the attachment hole to thereby attach the struck part to the head

Methodology Applied

Scientific EffectMechanical Fastener: Mechanical Fastener

Implementation Method 2

the hook part is hooked to a lower surface of the head

Methodology Applied

Scientific EffectHook: Hook

Data Source

PatentUS20250078785A1Elastic body, head, percussion instrument, and attachment method of elastic body

Publication Date: 2025.03.06 ROLAND CORP

AI summary

An elastic body is attached to a percussion instrument including a body part and a head, the body part having an opening on an upper end side thereof, the head covering the opening of the body part and having attachment holes formed therein. The elastic body includes: a struck part, arranged on an upper surface of the head; insertion parts, protruding downward from the struck part; and a hook part, formed to expand from the insertion parts. In a state in which the insertion parts are inserted into the attachment holes of the head, the hook part is hooked to a lower surface of the head.