Snow Goggle Lens Pivoting Mechanism for Stress Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional snow goggles experience significant deformation and stress due to the limited circular path of the lens rotation, which restricts the movement and causes discomfort during use.
Innovation Solution
The snow goggle device incorporates a spectacle frame with two pivoting members and a curved lens, where the pivoting modules allow the lens to move along a combination of straight and arced paths, increasing the radius of the moving path and reducing deformation by distributing stress more evenly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the lens is connected to a single pivoting member on the spectacle frame, then the lens can be rotated with respect to the spectacle frame, but the lens sustains large deformation and generates large stress due to the limited circular path of rotation
Solution Approach 1:
The pivoting member is divided into two separate pivoting members, each connected to different carrying portions on the spectacle frame. This segmentation allows the lens to rotate along a larger circular path by utilizing both pivoting members in coordination, thereby reducing the deformation and stress on the lens during rotation.
2Ease of operation
If the lens is connected to a single pivoting member on the spectacle frame, then the lens can be rotated with respect to the spectacle frame, but the lens sustains large deformation due to the limited circular path of rotation
Solution Approach 1:
The pivoting member is divided into two separate pivoting members, each connected to different carrying portions on the spectacle frame. This segmentation allows the lens to rotate along a larger circular path by utilizing both pivoting members in coordination, thereby reducing the deformation and stress on the lens during rotation.
Data Source
AI summary
A snow goggle device includes a spectacle frame, two pivoting members movably connected to the spectacle frame, and a curved lens pivotally connected to the two pivoting members. Each pivoting member is cooperated with the spectacle frame to form with a first segment movable along a straight path and a second segment movable along an arced path, and includes a third segment synchronously movable with the first segment and the second segment. When the first and the second segments of each pivoting member are synchronously moved, the third segments drive the curved lens to move with respect to the spectacle frame between a closed position and an open position, synchronously causing a deformation of the curved lens. When the curved lens is at the closed position or the open position, the curved lens receives a stress that is smaller than a stress generated from the deformation.