Magnetic Frictional Coupler for Headset Adjustment
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Solution Overview
Problem
Existing headset frictional couplers using metal, plastics, and elastomers face issues with frictional force variability due to material wear and manufacturing difficulties, leading to inconsistent adjustment performance over time.
Innovation Solution
The implementation of magnetic frictional couplers with varying magnetic flux between elements, which maintains consistent magnetic force and frictional force without wear, allowing for reliable and silent operation, and easier manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional frictional couplers use metal, plastics, and elastomers, then they can provide frictional force for positioning, but the frictional force changes as materials wear out and creep over time
Solution Approach 1:
The patent replaces traditional mechanical frictional couplers using metal, plastic, and elastomer materials with a magnetic frictional coupler system. The magnetic system uses magnetic flux between engagement surfaces to generate frictional force, eliminating material wear and creep issues inherent in traditional mechanical systems. The magnetic elements maintain consistent magnetic force over time, providing reliable and repeatable frictional coupling without the degradation problems of conventional materials.
2Manufacturing precision
If traditional frictional couplers use metal, plastics, and elastomers, then they can provide positioning capability, but manufacturing and production difficulties lead to tolerance variation
Solution Approach 1:
The magnetic frictional coupler system replaces complex mechanical manufacturing processes with magnetic field generation. Magnetic elements can be precisely controlled during manufacturing to establish specific magnetic flux patterns, reducing tolerance variations. The magnetic system eliminates the need for precise mechanical fits and tolerances required in traditional frictional couplers, simplifying the manufacturing process while improving precision consistency.
3Reliability
If magnetic elements are arranged to establish varying magnetic flux, then consistent magnetic force is maintained without wear, but device complexity increases
Solution Approach 1:
The patent varies magnetic flux parameters by strategically arranging magnetic elements with different strengths, polarities, and positions on the engagement surfaces. This parameter variation creates the desired frictional force profile while maintaining consistency over time. The magnetic element arrangement is designed to produce peaks in magnetic flux at selected detent positions, providing reliable positioning without requiring overly complex configurations.
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 frictional couplers provide reliable and consistent adjustment performance by maintaining magnetic force and frictional force over time, reducing wear issues and manufacturing complexities, while allowing for silent operation and easy production.
Implementation Method 1
Magnetic elements are arranged to establish a magnetic flux between the first engagement surface and the second engagement surface, and thereby establishing a frictional force tending to hold the relative positions of the first and second members
Implementation Method 2
The magnetic flux varies as a function of the relative positions of the first and second members along the line of adjustment, and has peaks at a plurality of detent positions along the line of adjustment
Data Source
AI summary
A headset is described that utilizes magnetic frictional couplers. A coupler includes a first member having a first engagement surface and a second member having a second engagement surface disposed for relative positioning of the first and second members along a line of adjustment. One or more magnetic elements are arranged on the first and second members to establish a magnetic flux between the first engagement surface and the second engagement surface, and thereby establishing a frictional force tending to hold the relative positions of the first and second members. The magnetic flux varies as a function of relative position of the first and second members along the line of adjustment, and has peaks at a plurality of detent positions along the line of adjustment.