Tremolo Bridge Magnetic Lock for String Tuning Stability
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Solution Overview
Problem
Tremolo bridges cause other strings to go slightly flat when one string is tensioned, leading to undesirable tuning changes due to the base plate's pivot mechanism affecting string tension.
Innovation Solution
A vibrato bridge system with a magnetic lock mechanism that maintains the base plate's resting position by providing resistance only when a string is pulled, using a spring arm, spring, and magnetic latch system to prevent base plate movement and maintain string tension.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the base plate is balanced on a pivot point to enable tremolo arm operation, then the musician can easily add vibrato, but the tension on other strings changes causing them to go flat
Solution Approach 1:
A magnetic locking mechanism acts as an intermediary between the spring arm and spring anchor. The magnetic lock engages to prevent the spring arm from rotating relative to the spring anchor, thereby preventing base plate movement and maintaining string tension stability when strings are bent, while allowing normal tremolo operation when the magnetic lock is disengaged
2Reliability
If counterbalancing springs with different spring constants are added to the tremolo bridge, then an attempt is made to balance string tension, but the problem persists because the bridge is already balanced between string force and spring force
Solution Approach 1:
The invention extracts the tension balancing function from the spring system and relocates it to a magnetic locking mechanism. By removing the spring arm's rotational degree of freedom through magnetic engagement, the system maintains string tension without requiring complex spring constant adjustments or additional counterbalancing springs
3Reliability
If the magnetic lock provides strong resistance when magnets are pulled apart, then the base plate stays in resting position, but this may interfere with normal tremolo arm operation
Solution Approach 1:
The magnetic locking mechanism transitions dynamically between engaged and disengaged states. During normal tremolo operation, the magnetic lock remains disengaged allowing free base plate movement. When strings are bent and tension changes occur, the magnetic lock engages to prevent base plate movement, providing conditional stability without interfering with normal operation
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 magnetic lock system ensures that the base plate remains stationary when a string is tensioned, keeping the other strings in perfect tune, effectively addressing the tuning issues associated with traditional tremolo bridges.
Implementation Method 1
A magnetic lock is connected between the spring anchor and the second end of the spring arm. In one embodiment, the magnet latch includes a male sleeve with a permanent magnet attached to the inside of the male sleeve. A female sleeve has a permanent magnet attached to the inside of female sleeve.
Data Source
AI summary
A vibrato bridge system includes a base plate. A mounting frame is attached to the base plate. An anchor mates with an edge of the base plate. A spring arm has a first end attached to the base plate and extending roughly perpendicular to the base plate. A spring has a first end attached to a second end of the spring arm. A spring anchor is attached to a second end of the spring. A magnetic latch is connected between the spring anchor and the second end of the spring arm. When the base plate is in its resting position the two magnets of the lock are essentially touching. The bracket has a pair of parallel slots and a stop pin extends through an end of the male sleeve and through the pair of slots.