Magnetically Secured Drum Trigger with Piezo Transducer

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Solution Overview

Problem

Existing drum triggers face issues such as stress on drum heads, mechanical failure, double triggering, and installation complexity due to their design, which affects the tonal quality and reliability of electronic drum kits.

Innovation Solution

A magnetically secured drum trigger system with a piezoelectric transducer that flexes freely, allowing accurate capture of vibrations without additional mechanical stress, and can be easily configured and attached to various drum components, including the head, shell, or lug, using rare-earth magnets and a silicone buffer layer.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a tension arm trigger is mounted on the drum rim using a lug or clamp mechanism, then the trigger can be securely attached to the drum, but the tension arm places stress on the drum head causing deformation and affecting tonal quality

Engineering Contradiction:
Improvetrigger attachment securityVSAvoiddrum head stress and deformation
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

A drumhead interface element (such as a foam pad or gel layer) is introduced between the trigger and the drumhead to distribute the contact pressure and prevent direct stress concentration. This intermediary component allows the trigger to maintain contact with the drumhead for accurate strike detection while preventing deformation and protecting the drumhead from damage.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The mounting system uses adjustable tension mechanisms that allow the trigger to be securely attached without applying excessive force to the drumhead. By optimizing the contact pressure parameter, the system maintains reliable trigger attachment while minimizing harmful stress on the drumhead, thus preserving tonal quality.

Inventive Principle:
Principle #35Parameter changes

2Reliability

If a tension arm applies constant pressure to keep the trigger in contact with the drum head, then the trigger remains positioned, but the tension applies unnecessary force that can cause mechanical failure of the trigger

Engineering Contradiction:
Improvetrigger contact maintenanceVSAvoidtrigger mechanical durability
Core Design Contradiction:
ReliabilityVSStrength

Solution Approach 1:

The mounting system transitions from a static tension arm to a dynamic mounting mechanism that allows the trigger to move freely with the drumhead vibrations. The trigger is held in place by adjustable mounting elements (such as elastic bands or magnetic holders) that maintain proximity without applying constant mechanical pressure, thereby preventing mechanical failure while ensuring continuous contact during drum strikes.

Inventive Principle:
Principle #15Dynamics

3Ease of manufacture

If the trigger is mounted near the rim of the drum, then it can be easily attached, but the location is limited and the trigger is susceptible to movement requiring frequent re-adjustment

Engineering Contradiction:
Improvetrigger installation simplicityVSAvoidtrigger position stability
Core Design Contradiction:
Ease of manufactureVSEase of operation

Solution Approach 1:

The mounting system is designed to be universally applicable to multiple locations on the drum (rim, shell, or head) using the same basic mounting mechanism. This allows the trigger to be installed at the optimal position for each specific drum and playing style, providing both ease of installation and position stability. The adjustable mounting elements prevent movement and eliminate the need for frequent re-adjustment.

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

4Measurement precision

If the piezoelectric transducer is placed in direct contact with the drum head to capture vibrations, then the trigger sensitivity is maximized, but the transducer degrades or wears out quickly due to high stress

Engineering Contradiction:
Improvevibration detection accuracyVSAvoidtransducer lifespan
Core Design Contradiction:
Measurement precisionVSDuration of action of stationary object

Solution Approach 1:

A protective interface layer (such as foam, gel, or soft material) is placed between the piezoelectric transducer and the drumhead. This intermediary maintains intimate contact for accurate vibration detection while protecting the transducer from direct mechanical stress and impact. The soft material absorbs excessive force and distributes pressure, allowing the transducer to function at maximum sensitivity without degradation from high-stress direct contact.

Inventive Principle:
Principle #24Intermediary (Mediator)

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

The system provides improved accuracy, durability, and ease of use by maintaining constant contact with the drum head, reducing double triggering and velocity gaps, and allowing for flexible placement without damaging the drum, thus enhancing the capture of the exact sound and tone of the instrument.

Implementation Method 1

a sound-receiving element, such as a piezoelectric transducer, which translates the vibrations of the drum when played into a digital or analog electrical signal

Methodology Applied
Scientific EffectPiezoelectric effect: Piezoelectric Effect

Implementation Method 2

MAGNETICALLY SECURED INSTRUMENT TRIGGER AND INSTRUMENT TRIGGER MOUNTING SYSTEMS AND METHODS

Methodology Applied
Scientific EffectMagnetic attraction: Magnetism

Data Source

PatentUS11335310B2Instrument trigger and instrument trigger mounting systems and methods
Publication Date: 2022.05.17 RARE EARTH DYNAMICS INC
  • US11335310B2 patent drawing
  • US11335310B2 patent drawing
  • US11335310B2 patent drawing

AI summary

An apparatus, system, and method for a magnetically and releaseably attachable trigger for an instrument is provided. Additionally, the trigger provides for an increased sensitivity of sound by being in direct physical contact with the surface on which it is attached.