Diving Mask Lens Frame Segmentation for Tool-Free Detachment
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Solution Overview
Problem
Diving face masks with circumferentially discrete inner frames are prone to deformation and detachment during use, leading to lens loss when disassembled for exchange.
Innovation Solution
An integral annular inner frame with a space for a connector member, allowing elastic deformation for easy detachment without tools, and a latching detent to prevent accidental removal during use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the inner frame is made circumferentially discrete to facilitate easy detachment, then the inner frame can be easily disengaged from the outer frame, but the inner frame becomes prone to deformation and accidental detachment during use
Solution Approach 1:
The inner frame is divided into multiple annular portions (first annular portion, second annular portion, etc.) that are discrete in the circumferential direction. This segmentation allows the inner frame to be easily detached by deforming only a portion of it, while the remaining portions stay engaged with the outer frame, thus resolving the contradiction between ease of detachment and stability during use.
Solution Approach 2:
The inner frame has different structural characteristics at different locations: the annular portions are rigid for stability during use, while the spaces between portions allow localized elastic deformation for easy detachment. This local quality differentiation enables the inner frame to simultaneously achieve both reliability and ease of operation.
2Reliability
If the inner frame is made rigid to prevent deformation during use, then the inner frame maintains stability, but the inner frame becomes difficult to detach without tools
Solution Approach 1:
By segmenting the inner frame into multiple annular portions with spaces between them, the design allows localized elastic deformation at the space regions while maintaining rigidity in the annular portions. This enables easy detachment through minor deformation without compromising the overall stability during use.
Solution Approach 2:
The inner frame's structural parameters are optimized by creating spaces between annular portions, which changes the flexibility-rigidity parameter distribution. The spaces allow elastic deformation for detachment while the continuous annular portions maintain rigidity for stability, resolving the contradiction between these two requirements.
3Reliability
If the inner frame is made circumferentially continuous to prevent accidental detachment, then the inner frame maintains stability, but the inner frame requires complex tools for detachment
Solution Approach 1:
The inner frame is segmented into discrete annular portions rather than being continuously circumferential. This segmentation allows the inner frame to maintain stability through the rigidity of each portion while enabling simple detachment through elastic deformation of the spaces between portions, eliminating the need for complex tools.
Solution Approach 2:
The inner frame's own structure, with its built-in spaces between annular portions, enables it to be easily detached by the user through simple elastic deformation without requiring external tools. The design makes the detachment process self-serviceable while maintaining stability during use.
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
Enables secure lens retention and easy lens exchange without tools, protecting the inner frame from deformation and preventing accidental detachment during use.
Implementation Method 1
the inner frame should be elastically deformed to be bent due to any high impact exerted externally on the lens frame during use of the mask and released from the snap engagement with the outer frame
Data Source
AI summary
A diving face mask including a pair of front lenses, a lens frame provided with an outer frame having a pair of lens holders in which the lenses are detachably mounted from front and an inner frame having a pair of annular portions adapted to be detachably snap engaged with an inner peripheral surface of the lens holders, a tubular facial skirt extending rearward from the lens frame, and a strap adapted to be put around the wearer's head. The inner frame includes a pair of the integral annular portions and is formed with a space into which a connector member prepared separately of the inner frame is detachably fitted.