Adjustable Head Strap Module for Stable Head-Mounted Display Fit
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Solution Overview
Problem
Glasses-type head-mounted display devices often fail to provide sufficient clamping force, leading to instability and easy device removal during vigorous movements.
Innovation Solution
A wearable device with a detachable head strap module featuring adjustable belts and an adjustment mechanism, allowing secure attachment to the user's head without the need for external power sources, ensuring stability during both static and dynamic activities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If glasses-type head-mounted display devices use temple clamping structure, then the device structure is simple, but the clamping force is insufficient and the device falls off easily during vigorous movements
Solution Approach 1:
The head strap module is divided into multiple independent components: first belt, second belt, adjustment mechanism, and connection interfaces. This segmentation allows each component to perform its specific function optimally while maintaining overall system simplicity.
Solution Approach 2:
The head strap module introduces dynamic adjustability through the adjustment mechanism, which allows users to modify the overlapping length of the first and second belts according to different head sizes and movement intensities, thereby dynamically optimizing the clamping force.
2Reliability
If a detachable head strap module with adjustable belts is added, then the device stability is improved, but the device complexity increases
Solution Approach 1:
The head strap module serves multiple functions: securing the device to the user's head, adjusting to different head sizes, and providing stable support during vigorous movements. This multi-functionality reduces the need for additional separate components.
Solution Approach 2:
The adjustment mechanism is designed to be user-operable without requiring external tools or power sources. Users can independently adjust the belt overlapping length to achieve the desired fit, eliminating the need for complex motorized adjustment systems.
3Adaptability or versatility
If the head strap module uses adjustable overlapping length, then the adaptability to different users is improved, but the device complexity increases
Solution Approach 1:
The adjustment mechanism modifies the physical parameter of belt overlapping length to adapt to different user requirements. By changing this single parameter, the system accommodates various head sizes and shapes without requiring multiple different strap designs.
Solution Approach 2:
The system transitions from a fixed-length strap to a dynamically adjustable strap where the overlapping length can be modified by the user. This dynamic capability enhances adaptability while keeping the adjustment mechanism simple and manual.
Data Source
AI summary
A wearable device and a head strap module are provided. The wearable device includes a host and a head strap module. Two opposite sides of the host are provided with a first bracket and a second bracket. The first bracket has a first end. The second bracket has a second end. The head strap module includes a first belt, a second belt, and an adjustment mechanism. The first belt has a third end. The second belt has a fourth end. The third end and the fourth end are detachably assembled to the first end and the second end respectively. The adjustment mechanism is arranged at the overlapping position of the first belt and the second belt for adjusting the overlapping length of the first belt and the second belt.