Protective Eyewear with Universal Tear-Off and Roll-Off Attachment
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Solution Overview
Problem
Existing protective eyewear for activities like motocross often requires users to choose between tear-off and roll-off systems for clearing dirt from the lens, with current designs either requiring multiple goggles or cumbersome part interchange and sub-optimal attachment of vision clearing systems.
Innovation Solution
The design incorporates a frame with engagement features for tear-off sheets and removable roll holders with complementary attachment formations, including resilient tensile elements, allowing for easy switching between tear-off and roll-off systems without restricting vision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If goggles are designed to support both tear-off and roll-off systems, then versatility is improved, but device complexity increases due to requiring multiple attachment mechanisms
Solution Approach 1:
The goggle frame is designed with a universal attachment mechanism comprising engagement features on the lens and complementary attachment formations on both tear-off sheets and roll holders. This allows the same goggle frame to support both tear-off and roll-off vision clearing systems through a common interface, eliminating the need for different goggle models.
Solution Approach 2:
The attachment system is divided into separate, modular components: engagement features on the lens, attachment formations on the vision clearing accessories, and removable roll holders. This segmentation allows each component to be independently designed and attached, simplifying the overall structure while enabling versatility.
2Ease of operation
If roll holders are made removable, then ease of operation is improved for switching systems, but reliability decreases due to potential attachment issues
Solution Approach 1:
The attachment formation acts as an intermediary mechanism between the roll holder and the frame. It provides a standardized interface that ensures secure attachment when engaged while allowing easy removal when needed, balancing reliability with ease of operation.
Solution Approach 2:
The attachment and detachment mechanism uses a simple, repeatable engagement pattern that can be easily copied and manufactured. This ensures consistent attachment security across multiple units while maintaining ease of operation through the same simple motion.
Data Source
AI summary
Protective eyewear such as goggles (12) are provided with a frame (14) lens (20) and a pair of tabs (30) protruding from a front (32) of the lens (20) at lateral positions, to receive tear off sheets. The frame (14) includes lateral attachment formations (28) that can engage complemental attachment formations (46) on removable roll holders (34,36). Each roll holder (34,36) includes an anchor formation (50) with a recess (54) in which one of the tabs (30) is receivable. The roll holders (34,36) can be fitted on the attachment formations (28) and tabs (30) to use a roll-off system, or can be removed to use a tear off system. The frame (14) preferably has pivoting outriggers (22) which include the attachment formations (28), so that the roll holders (34,36) are attached to the outriggers (22) and can pivot off the lens (20) with the outriggers (22).