Fine-Tuning Peg With Self-Locking Gear Mechanism
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Solution Overview
Problem
Existing fine-tuning pegs for stringed musical instruments often require additional connecting aids and result in increased torque on the instrument, making them cumbersome and less precise.
Innovation Solution
A fine-tuning peg design featuring a toothed wheel transmission device with a self-locking mechanism, allowing for compact construction and minimal torque transfer, utilizing a gear system with different tooth counts to achieve precise string tuning without additional fixation methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a fine-tuning peg is designed with a gear mechanism for precise string tuning, then tuning precision is improved, but the device complexity increases
Solution Approach 1:
The patent combines the fine-tuning function and the securing function into a single integrated peg structure. The shaft includes both a string holding area and bearing areas, with a gear mechanism that performs both tuning and self-locking functions. This merging eliminates the need for separate securing mechanisms while maintaining precise tuning capability through the gear transmission device.
Solution Approach 2:
The gear mechanism is designed to be self-locking, automatically securing the tuned position without requiring additional components or actions. The self-locking feature arises from the gear transmission design itself, where the meshing gears naturally prevent back-driving, thus the mechanism serves its own securing function without external aids.
2Reliability
If additional connecting aids are used to secure the fine-tuning peg, then the attachment reliability is improved, but the device complexity and torque on the instrument increase
Solution Approach 1:
The peg design uses the gear mechanism's inherent self-locking property to secure itself to the instrument. The meshing gears create a self-locking effect that prevents the shaft from rotating back, providing reliable attachment without needing additional connecting aids such as adhesives or form-fitting elements. This self-service approach reduces both complexity and torque on the instrument.
3Measurement precision
If a high transmission ratio is achieved using multiple gears, then fine-tuning precision is improved, but the head volume increases
Solution Approach 1:
The patent places the gear mechanism inside the head structure, with gears nested within the available space. The first gear wheel and second gear wheel are arranged concentrically or in close proximity, allowing the transmission device to be contained within a compact head volume while still achieving the required high transmission ratio for fine tuning.
4Manufacturing precision
If the gear mechanism is arranged externally for ease of manufacture, then manufacturing precision is improved, but the head volume and protection of the mechanism decrease
Solution Approach 1:
The gear mechanism is nested within the head, with gears arranged to fit inside the head's internal volume. The first gear wheel and second gear wheel are positioned concentrically or in a compact arrangement that allows them to be contained within the head structure, maintaining both compactness and manufacturability.
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
Enables precise string tuning with minimal mechanical stress on the instrument, allowing for fine adjustments of string length in small increments and secure attachment via press fit without additional bonding or form-fitting elements.
Implementation Method 1
a first gear wheel which is non-rotatably connected to the first area is provided, at least one further gear wheel which is non-rotatably connected to the at least one further area is provided, a head, which is arranged on the shaft such that it can rotate about an axis of rotation, is provided, and at least one drive gear wheel, which is arranged on the head and which acts on the first gear wheel and the at least one further gear wheel, is provided
Implementation Method 2
The toothed wheel transmission device can be designed to be self-locking in a simple manner. As a result, the torque that is exerted by a string on the first area due to the string tension can be intercepted by the gear mechanism and the first area is prevented from turning back.
Data Source
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AI summary
Disclosed is a fine-tuning peg for stringed musical instruments, comprising a shaft with a first section that forms a string holding zone and at least one other section which forms a bearing zone for mounting the fine-tuning peg on the stringed musical instrument. The first section can be rotated relative to the at least one other section. The fine-tuning peg further comprises a first gear that is connected in a rotationally fixed manner to the first section, at least one other gear which is connected in a rotationally fixed manner to the at least one other section, a head that is arranged on the shaft in such a way as to be rotatable about an axis of rotation, and at least one driving gear which is disposed on the head and acts on the first gear and the at least one other gear.