Removable Lens Eyewear One-Handed Pin Actuation
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Solution Overview
Problem
Conventional eyewear with user-replaceable lenses often requires two hands for removal and replacement, and the connection is insufficiently secure to prevent lens displacement during vigorous activities.
Innovation Solution
A removable lens eyewear system featuring a lens-securing assembly with a pin and actuation member that allows for one-handed engagement and disengagement, providing a secure connection to the eyewear frame to prevent axial, linear, and rotational movement of the lens.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional connection mechanism is used for removable lenses, then the lens can be replaced, but it requires two hands for removal and replacement and the connection is insufficiently secure during vigorous activity
Solution Approach 1:
The connection mechanism is divided into separate functional components: a pin element for securing the lens, an actuation member for controlled release, and an engagement member with recesses for positioning. This segmentation allows each component to perform its specific function independently, enabling secure connection while maintaining ease of one-handed operation through the actuated pin mechanism
Solution Approach 2:
The pin element is designed to be movable rather than fixed, transitioning between extended (engaged) and retracted (disengaged) states. This dynamic characteristic allows the connection to be both secure during wear and easily released through actuation of the actuation member, resolving the contradiction between security and ease of operation
2Reliability
If a secure connection mechanism is used to prevent lens displacement during vigorous activity, then lens stability is improved, but the complexity of the device increases
Solution Approach 1:
Multiple securing functions are merged into a single integrated lens-securing assembly that attaches to the bridge. The assembly combines the pin element, actuation member, and engagement member with recesses into one unified structure, providing secure connection while minimizing the number of separate components and overall device complexity
Solution Approach 2:
The actuation member is designed to control the pin element's engagement state through user actuation, eliminating the need for additional locking mechanisms or complex multi-step securing procedures. The system serves itself by using the actuation member's movement to directly control pin engagement, simplifying the overall mechanism while maintaining security
Data Source
AI summary
A removable lens eyewear system is provided that substantially prevents accidental or unintended removal, axial movement, linear movement, and rotational movement of a removable lens relative to an eyewear frame, such as in a side-to-side, up-and-down, back-and-forth, and rotational direction, as well as the unintended disconnection of the removable lens from the eyewear frame, while at the same time providing easy, one-handed operation for the engagement and disengagement of the removable lens from the system.