Stringed Instrument Peg with Multi-Surface Bearing Holes
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Solution Overview
Problem
Existing stringed instrument pegs are limited in versatility due to the need for specific mounting configurations and components, such as holes and guide bushes, which restrict their application across different instrument shapes and sizes.
Innovation Solution
A peg design featuring a main body with bearing holes on multiple surfaces to support the winding shaft and worm rotatably, allowing for adjustable mounting positions without the need for additional holes or guide components, and incorporating bearings for enhanced strength and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the main body is secured to the lower surface of the head and the winding shaft is mounted at the backside, then the peg can be mounted in traditional stringed instruments, but the peg cannot be mounted in instruments with different head shapes or sizes
Solution Approach 1:
The main body is designed with bearing holes on multiple surfaces (upper, lower, and side surfaces), enabling the winding shaft to be mounted at any of these surfaces. This multi-functional design allows the same peg structure to adapt to different head shapes and sizes of various stringed instruments, eliminating the need for instrument-specific peg designs.
Solution Approach 2:
The mounting configuration is made adjustable by allowing the winding shaft to be positioned at different surfaces of the main body depending on the instrument requirements. This dynamic reconfigurability enables versatility across different instrument types without increasing the complexity of the peg structure itself.
2Reliability
If a hole and guide bush are provided in the head for the winding shaft, then the winding shaft can be properly guided, but the number of parts and manufacturing processes increases
Solution Approach 1:
The guide bush, which was previously a separate component inserted into a hole in the head, is extracted and integrated directly into the main body of the peg. The bearing holes are now formed in the main body itself, eliminating the need for separate guide bushes and reducing the number of parts and assembly steps.
Solution Approach 2:
The guidance function previously provided by the separate guide bush is merged with the main body structure. The bearing holes in the main body directly provide the guidance function, combining the support and guidance roles into a single integrated component, thereby simplifying manufacturing.
3Strength
If the main body is made larger and thicker to provide sufficient strength, then the peg can support string tension, but the peg cannot be mounted in instruments with limited space
Solution Approach 1:
Instead of uniformly increasing the size of the main body, the design provides localized strength where needed. The bearing holes are strategically positioned and dimensioned to provide sufficient structural support for string tension while keeping the overall main body compact and thin, enabling mounting in instruments with limited space.
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 the peg to be mounted on various stringed instruments by miniaturizing and reducing the thickness of the main body, decreasing manufacturing complexity and costs, while maintaining strength and preventing string tension-induced misalignment.
Implementation Method 1
bearing holes formed in at least two surfaces of the main body, the bearing holes supporting the winding shaft rotatably
Implementation Method 2
a worm rotatably supported by the main body, the worm having a knob at an end thereof; a worm wheel engaging with the worm, the worm wheel rotatably supported by the main body
Data Source
AI summary
The mounting position of a winding shaft on a main body is changed, and a peg may be mounted in various stringed instruments by miniaturizing the main body or reducing the thickness thereof. The peg for the stringed instrument includes a main body mounted in the stringed instrument; a worm rotatably supported by the main body, the worm having a knob at an end thereof; a worm wheel engaging with the worm, the worm wheel rotatably supported by the main body; a winding shaft connecting to one side of the worm wheel in an axial direction, the winding shaft for winding a string of the stringed instrument; and bearing holes formed in at least two surfaces of the main body, the bearing holes supporting the winding shaft rotatably.