Movable Contact Sections for Head-Mounted Display Fit Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional head-mounted image display devices (HMDs) face instability issues when worn by users with smaller heads, as the contact area between the temples and the head is insufficient, leading to an unsteady fit, while users with larger heads experience a stable fit due to a larger contact area, but this is not adjustable for varying head sizes.
Innovation Solution
A head-mounted image display device with movable contact sections that adjust in both the left-right and front-back directions, supported by link mechanisms and an attenuating mechanism to ensure a consistent contact area, allowing for secure fitting across different head sizes by adjusting the position and distance of the contact sections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the temples are configured to be turnable in hinge sections to adjust opening angles, then the HMD can be worn by users with different head sizes, but users with relatively small heads experience insufficient contact area and unstable fitting
Solution Approach 1:
The temple is configured with a turnable contact section that can dynamically adjust its position between a first position (closer to the head) and a second position (farther from the head). This dynamic adjustment capability allows the temple to adapt to different head sizes while maintaining stable contact area, resolving the contradiction between adaptability and fitting stability.
Solution Approach 2:
The temple is divided into multiple functional sections: a fixed temple holder, a turnable contact section, and supporting sections. This segmentation allows independent adjustment of the contact section position while maintaining the structural integrity of the overall temple assembly, enabling size adaptation without compromising stability.
2Reliability
If the contact area between temples and head is increased for users with large heads, then stable attachment is achieved, but the structure becomes too large for users with small heads
Solution Approach 1:
The contact section's position is made dynamic rather than fixed, allowing it to be adjusted between first and second positions. This enables the same temple structure to provide stable contact area for large heads while maintaining compatibility for small heads, resolving the contradiction between attachment stability and adaptability.
Data Source
AI summary
A head-mounted image display device mounted on the head of a user includes an image display section, a left contact section set in contact with a temporal region on the left side, a right contact section set in contact with a temporal region on the right side, a left supporting section provided in the image display section and configured to support the left contact section, and a right supporting section provided in the image display section and configured to support the right contact section. At least one supporting section of the left supporting section and the right supporting section supports an entire target contact section, which is the contact section supported by the at least one supporting section of the left and right contact section, to be movable from a first position to a second position away from the first position in a left-right direction with respect to the head.