Goggle Lens Attachment System With Pivot Latch Mechanism
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Solution Overview
Problem
Conventional ski goggles lack a convenient and cost-effective way to replace lenses for varying glare reduction needs and damaged lenses, requiring multiple goggles or complex attachment mechanisms.
Innovation Solution
A goggle design featuring a removable lens with a latch mechanism, including a pivotally coupled fastener and over-center mechanism, which securely engages with the frame, allowing easy assembly and disassembly, and a strap system to tension the lens against the frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a removable lens system is implemented, then adaptability for different glare reduction needs is improved, but device complexity increases due to the latch mechanism
Solution Approach 1:
The goggle system is divided into separable components: a frame, a removable lens, and a latch mechanism. This segmentation allows the lens to be independently replaced without affecting the frame structure, enabling adaptability for different glare reduction needs while keeping the attachment mechanism relatively simple.
Solution Approach 2:
The latch mechanism is extracted as a separate, simple component that can be easily engaged and disengaged to remove the lens. This extraction principle allows the lens replacement function to be achieved with minimal complexity by using a dedicated fastening element rather than integrating a complex attachment system into the frame.
2Reliability
If a secure latch mechanism is used to retain the lens, then reliability of lens retention is improved, but ease of operation for lens replacement deteriorates
Solution Approach 1:
The latch mechanism incorporates a pivotable arm that can be easily moved between engaged and disengaged positions. This dynamic element allows the user to quickly release the lens by simply pivoting the arm, maintaining ease of operation while ensuring secure retention when the latch is engaged.
Solution Approach 2:
The latch arm acts as an intermediary element between the user's manual operation and the lens retention function. By providing this intermediate mechanical element, the system achieves both secure retention (when the latch engages the lens) and ease of operation (when the user manually pivots the latch to release it).
Data Source
Figure 1
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AI summary
A goggle is disclosed having a frame with upper and lower frame portions with the upper frame portion being substantially more rigid than the lower frame portion. A fastener secures the upper perimeter of a lens to the upper frame portion. The lower portion includes slots receiving tabs extending from opposing sides of a notch in the lens for receiving the wearer's nose. The fastener includes an elongate member insertable within a slot formed in the lens and rotatable to a crosswise position hindering removal of the elongate member from the slot.