Percussion Instrument Bracket for Different-Diameter Rods

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Solution Overview

Problem

Conventional percussion instruments have low versatility as they can only fix rods of one diameter in both horizontal and vertical directions, limiting their adaptability to different drum set configurations.

Innovation Solution

A percussion instrument design that includes a bracket with multiple insertion holes and tightening portions for rods of different diameters, allowing for secure attachment of horizontal and vertical rods with varying diameters using elastic deformation and sliding displacement of tightening members.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a single tightening portion is used in the bracket, then the structure is simple, but it can only fix rods of one diameter, reducing versatility

Engineering Contradiction:
Improveability to fix rods of different diametersVSAvoidbracket structure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The bracket is designed with multiple tightening portions (first tightening portion for large diameter rods, second tightening portion for small diameter rods) within a single structure, enabling it to perform multiple functions of securing different rod types. This universal design allows the same bracket to adapt to various rod configurations without requiring separate brackets for each rod size.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The bracket's tightening mechanism is segmented into distinct first and second tightening portions, each optimized for specific rod diameters. This segmentation allows independent adjustment and optimization for different rod sizes, resolving the contradiction between structural simplicity and adaptability by dividing the function into specialized sub-components.

Inventive Principle:
Principle #1Segmentation

2Adaptability or versatility

If a tightening portion elastically deforms to tighten the rod, then the assembly is simple and stable, but it may interfere with the insertion of rods of different diameters

Engineering Contradiction:
Improvecompatibility with different rod diametersVSAvoidrod insertion ease
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

Each tightening portion is designed with locally optimized properties: the first tightening portion has elastic deformation characteristics suited for large diameter rods, while the second tightening portion has characteristics optimized for small diameter rods. This local quality differentiation ensures that each portion can properly accommodate its target rod size without interfering with the insertion process.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The tightening portions utilize elastic deformation as a dynamic mechanism that adapts to different rod diameters. When a rod is inserted, the appropriate tightening portion elastically deforms to match the rod's diameter, then gradually tightens as the tightening bolt is rotated. This dynamic adaptation eliminates interference during insertion while maintaining secure fixation.

Inventive Principle:
Principle #15Dynamics

3Strength

If the tightening bolt is tightened strongly, then the rod is securely fixed, but it may damage the bracket or rod

Engineering Contradiction:
Improvefixation strengthVSAvoidrisk of damage to bracket or rod
Core Design Contradiction:
StrengthVSReliability

Solution Approach 1:

The tightening mechanism allows progressive adjustment of the tightening force parameter. As the tightening bolt is rotated, the tightening portion gradually elastically deforms and increases the clamping force on the rod. This controlled parameter change enables achieving strong fixation without sudden excessive force that could damage the bracket or rod, maintaining reliability while ensuring strength.

Inventive Principle:
Principle #35Parameter changes

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

Enhances versatility by enabling support on rods of different diameters, improving stability and ease of assembly, and reducing interference during rod insertion.

Implementation Method 1

a tightening portion, elastically deformed or performing sliding displacement inside the bracket by a tightening force of the tightening bolt

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Implementation Method 2

a tightening portion, elastically deformed or performing sliding displacement inside the bracket by a tightening force of the tightening bolt

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentEP4485448B1Percussion instrument and rod tightening method
Publication Date: 2025.08.13 ROLAND CORP
  • EP4485448B1 patent drawingFigure 1A
  • EP4485448B1 patent drawingFigure 1B
  • EP4485448B1 patent drawingFigure 2

AI summary

A percussion instrument and a rod tightening method that may improve versatility are provided. The percussion instrument includes a bracket (10) including an insertion hole (11a) into which a horizontal rod (100a) is insertable and insertion holes (11b, 14a) into which a horizontal rod (100b) is insertable. The horizontal rod (100a) inserted into the insertion hole (11a) may be tightened by a first tightening portion (31) of a first tightening member (30), and the horizontal rod (100b) inserted into the insertion holes (11b, 14a) may be tightened by a second tightening portion (42) of a second tightening member (40). Thus, since a percussion instrument (1) is supportable by the two horizontal rods (100a, 100b) that extend in the same direction (horizontal direction) and have different diameters, versatility may be improved.