Snare Drum Strainer Locking Assembly

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Solution Overview

Problem

Conventional snare drum strainers with switch mechanisms experience tension loosening during play, requiring frequent adjustments that can disrupt sound quality and player concentration.

Innovation Solution

A horseshoe-shaped clip that secures the tension knob, preventing rotation and maintaining snare tension by engaging with complementary notches, ensuring consistent snare assembly contact with the drumhead.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a tension adjustment screw is used to adjust snare wire tension, then the snare assembly can be positioned and tensioned, but the screw loosens during playing causing tension loss and requiring frequent adjustments

Engineering Contradiction:

Improvesnare tension adjustmentVSAvoidtension stability

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The locking lever is positioned to engage with the tension adjustment screw before playing begins, pre-preventing the loosening problem. The lever is designed to lock the screw in place immediately when tension is set, eliminating the need for subsequent adjustments during performance.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The locking lever acts as an intermediary component between the tension adjustment screw and the drum shell. It transfers and secures the tension force from the screw to the drum structure, preventing the screw from rotating or loosening during intense playing.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If a switch mechanism is added to move the snare assembly between contact and noncontact states, then the snare can be switched on and off, but the structure becomes more complex and costly

Engineering Contradiction:

Improvesnare contact state switchingVSAvoidstrainer structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The locking lever is designed to perform multiple functions: it locks the tension adjustment screw in place, prevents unwanted snare contact with the drumhead, and can be used to adjust both snare wire tension and snare contact pressure. This multi-functionality eliminates the need for separate mechanisms for each function.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The invention combines the tension locking function and the snare contact control function into a single integrated locking lever mechanism. By merging these functions, the overall structure is simplified while maintaining all necessary capabilities.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS20150206518A1Snare drum strainer with locking assembly

Publication Date: 2015.07.23 PEARL MUSICAL INSTRUMENT CO

AI summary

A snare assembly tensioning and locking mechanism for holding snare wires in either a contact or non-contact position against a bottom drum head of a snare drum. The mechanism uses a lever mounted horseshoe shaped clip including surface bumps or protrusions that, when the lever is in an upward and locked position, engage a set of complementary notches on a surrounding peripheral surface of a snare wire tension adjusting knob. In alternate embodiments, the locking lever may pivot toward the drum or in a direction tangential to the drum. In this manner, the snare wires are held in tension against inadvertent loosening of the tension adjusting knob while the drum is played.