Head-Mounted Display Adjustment Mechanism for Simultaneous Headband Positioning
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Solution Overview
Problem
Existing head-mounted display devices require individual adjustment of headbands, increasing the time needed to position the device correctly on a user's head.
Innovation Solution
A head-mounted display device featuring an adjustment mechanism with a base, turntable, and knob that allows simultaneous adjustment of multiple headbands' lengths, utilizing satellite points and locking mechanisms to wind and secure the headbands around the user's head.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple headbands are adjusted individually, then each headband can be positioned precisely, but the time required for positioning increases
Solution Approach 1:
The patent combines multiple independent adjustment mechanisms into a single integrated adjustment mechanism. The turntable structure allows one knob to simultaneously control the length of multiple headbands through shared transmission components, reducing the number of adjustment operations from multiple individual adjustments to a single unified adjustment action.
Solution Approach 2:
The adjustment mechanism is designed with universal functionality where a single knob operates multiple headbands simultaneously. The turntable and transmission mechanism enable one control element to perform the function of multiple separate adjusters, allowing simultaneous adjustment of all headbands to achieve proper positioning in one operation.
2Loss of time
If a complex adjustment mechanism is used to adjust multiple headbands simultaneously, then positioning time is reduced, but the device complexity increases
Solution Approach 1:
The adjustment mechanism employs a nested structure where the turntable is positioned within the base, and the transmission components are integrated within the turntable assembly. This nested arrangement allows multiple functional elements to be compactly organized, reducing overall spatial requirements and visual complexity while maintaining the simultaneous adjustment capability.
Solution Approach 2:
The mechanism is segmented into distinct functional modules: the base provides support and housing, the turntable provides rotation and transmission, and the knob provides user input. This segmentation allows each component to perform its specific function efficiently while keeping the overall structure understandable and maintainable.
3Adaptability or versatility
If the headbands are made elastic to adapt to different users, then adaptability is improved, but the precision of length adjustment is reduced
Solution Approach 1:
The headbands incorporate elastic sections that can dynamically adapt to different user head sizes and shapes. The elastic portions allow the headbands to stretch and conform to various contours, providing adaptability across different users while the rigid adjustment mechanism maintains precise length control through the turntable and locking system.
Solution Approach 2:
The headband system uses parameter changes by varying the elastic properties and length of different sections. The elastic strings can be adjusted in length through the mechanical mechanism while maintaining their elastic characteristics, allowing the same headband to adapt to different users through controlled parameter changes rather than requiring completely different headbands.
Data Source
AI summary
A head-mounted display device including a front piece, a plurality of headbands, and an adjustment mechanism is provided. The front piece is provided with or adapted to house a display device. An end of each of the headbands is connected to the front piece. The adjustment mechanism includes a base, a turntable, and a knob. The turntable and the knob are pivoted to the base on an axis of rotation. The turntable has a plurality of satellite points. Each of the satellite points is spaced apart from the axis of rotation, and another end of each of the headbands is connected to the corresponding satellite point. By turning the knob to rotate the turntable, the headbands are wound around the periphery of the satellite points to simultaneously reduce the length of use of the headbands.