HMD Holder Insertion and Sealing for Dust Protection
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Solution Overview
Problem
Existing head-mounted display apparatuses face issues with dust-proofing and display element displacement during handling due to exposed components and inadequate sealing, leading to potential damage and misalignment during the manufacturing process.
Innovation Solution
A head-mounted display apparatus design featuring a holder with a support frame and base plate that inserts into a case through an insertion opening, with the base plate fixed to cover the opening, ensuring initial dust-proofing and preventing displacement of the display element during adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the display element and lens are exposed during assembly and adjustment, then ease of operation and adjustment is improved, but dust-proofing deteriorates
Solution Approach 1:
The holder is inserted into the case through an insertion opening, creating a nested structure where the holder is contained within the case. This allows the display element to be accessible during adjustment while the case provides dust protection. The nested arrangement enables both ease of operation during assembly and dust-proofing after assembly.
Solution Approach 2:
The holder is designed with an insertion opening that allows preliminary insertion and adjustment of the display element before final sealing. The base plate is positioned to cover the insertion opening after the display element is in place, providing dust protection while maintaining adjustment capability during the assembly process.
2Ease of operation
If the display element is exposed during handling, then ease of operation is improved, but reliability deteriorates due to displacement risk
Solution Approach 1:
The holder is nested within the case, providing a stable housing structure that prevents displacement of the display element during handling. The base plate covering the insertion opening further secures the holder in position, maintaining reliability while allowing ease of operation during assembly.
Solution Approach 2:
The display element is inserted and adjusted through the insertion opening before the base plate is positioned to cover it. This preliminary action allows for easy adjustment and positioning, while the subsequent covering of the opening provides stability and prevents displacement during final handling.
3Ease of operation
If the insertion opening remains open for adjustment, then ease of operation is improved, but manufacturing precision deteriorates due to potential misalignment
Solution Approach 1:
The display element is inserted and adjusted through the insertion opening while the opening is still accessible. Once the display element is properly aligned and positioned, the base plate is positioned to cover the insertion opening, locking in the precise alignment. This preliminary adjustment before sealing ensures both ease of operation and manufacturing precision.
Solution Approach 2:
The holder structure provides self-positioning features that guide the display element into correct alignment during insertion. The base plate, when positioned to cover the insertion opening, automatically maintains the aligned position, ensuring manufacturing precision without requiring additional complex fixing mechanisms.
Data Source
AI summary
An HMD includes a first display element, a holder configured to hold the first display element, a first projection optical system configured to project an image formed on the first display element, and a barrel which is a case configured to house the first projection optical system in a positioned state, the holder includes a support frame that supports the first display element and a base plate coupled to an upper portion of the support frame and extending in a direction intersecting the support frame, and an end portion of the support frame is inserted into the barrel through an insertion opening formed at the barrel, and the base plate is fixed to the barrel while covering the insertion opening.