Adjustable Headband Torsion Spring Mechanism
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Solution Overview
Problem
Conventional headsets with torsion springs often provide a fixed compression force that may not be comfortable for all users, and the force decreases over time due to wear, making it difficult to ensure a proper fit for various users, especially in occupational settings where headsets are worn for extended periods.
Innovation Solution
The headset features an adjustable torsion spring mechanism using an adjuster bolt or worm gear arrangement that allows users to adjust the torsion force in discrete or continuous steps, ensuring a customizable fit for different users and accommodating changes in spring force over time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed torsion spring is used in the headband, then the structure is simple and manufacturing is easy, but the compression force cannot be adjusted for different users and decreases over time due to wear
Solution Approach 1:
The patent transforms the static fixed-torsion spring system into a dynamic adjustable system by introducing a mechanism that allows the torsion spring's compression force to be modified. The adjustability feature enables the headband to adapt to different users and compensates for wear over time, directly resolving the contradiction between simplicity and adaptability.
Solution Approach 2:
The patent changes the physical parameter of the torsion spring by introducing an adjustment mechanism that modifies the spring's compression force. This allows the same spring to operate at different force levels, enabling customization for different head sizes and compensating for degradation over time without requiring multiple springs or complex mechanisms.
2Ease of operation
If the torsion spring is loaded to a fixed level, then manufacturing precision is easier to achieve, but the fit quality deteriorates for users with different head sizes and preferences
Solution Approach 1:
The patent enables users to self-adjust the headband to their personal preferences and head sizes. The adjustment mechanism allows each user to customize the compression force independently, eliminating the need for precise factory calibration for every possible user scenario while maintaining ease of operation.
Solution Approach 2:
The static fixed-loading system is transformed into a dynamic adjustable system where users can modify the compression force according to their needs. This dynamic capability resolves the contradiction by allowing the same manufactured spring to serve multiple user requirements through adjustment rather than requiring multiple precision-manufactured springs.
3Reliability
If a standard torsion spring is used without adjustment capability, then the device is more reliable, but the comfort and fit quality deteriorate over time as spring force diminishes
Solution Approach 1:
The adjustment mechanism provides a feedback loop where users can monitor the headband's performance over time and re-adjust the compression force as needed. This allows the system to compensate for spring degradation, maintaining comfortable fit quality throughout the product's lifespan while preserving the reliability of the basic headband structure.
Solution Approach 2:
The patent incorporates an adjustment mechanism that allows users to proactively compensate for spring wear before the fit becomes uncomfortable. Users can periodically adjust the torsion spring to maintain optimal compression force, extending the duration of comfortable use without compromising the structural reliability of the headband.
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
This solution provides a comfortable and secure fit for a wide range of users by allowing adjustable torque, maintaining wearability and comfort even as the spring force diminishes with age and use, and facilitating easy adjustments for different users.
Implementation Method 1
The torsion spring provides a compression force biasing the two arms of the headband into a particular initial position
Implementation Method 2
an adjustment member having one end that engages one of the headband sections and another end that is coupled with the torsion spring, the adjustment member operable for rotating and adjusting the torsion force of the torsion spring
Data Source
Figure 1
Figure 1A
Figure 1B
AI summary
A headset includes an element to be held to the head of a wearer and a headband 10 coupled to the element and configured for engaging a head of a wearer to hold the element thereon. The headband 10 includes a plurality of headband arms 12, 14 coupled to pivot with respect to each other. A torsion spring 30 is positioned between the arms and portions of the torsion spring 30 are coupled to the arms 12, 14 for acting on the arms 12, 14 with a torsion force. An adjustment member is coupled between the torsion spring 30 and a headband arm 12, 14 and is operable for adjusting the torsion force of the torsion spring 30 to adjust the torsion force on the arms 12, 14.