Multi-Component Goggle Outrigger for Compact Strap Retention
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Solution Overview
Problem
Existing sport goggles face issues with strap failure due to stretching under impact forces, bulkiness leading to increased weight and reduced field of vision, and difficulty in handling, necessitating improved coupling methods for the strap and frame.
Innovation Solution
A multi-component outrigger system is manufactured by injection molding a first segment with a joint feature and a second segment onto the first segment using molten material, forming a permanent joint to enhance the connection between the strap and frame, using complementary shapes and materials to secure the segments together.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a robust coupling mechanism is used to prevent strap failure under stretching forces, then the reliability of the strap-frame connection is improved, but the device complexity and bulkiness increase
Solution Approach 1:
The patent merges the coupling mechanism directly into the outrigger structure itself, creating an integrated system where the outrigger serves both as a structural support and as the coupling mechanism. This eliminates separate coupling components and reduces overall device complexity while maintaining reliability.
Solution Approach 2:
The outrigger is divided into multiple segments that can be independently molded and then assembled. This segmentation allows for optimized design of each segment for its specific function while maintaining overall structural integrity and reducing the bulkiness of any single component.
2Reliability
If a bulky goggle design is used to ensure robust strap coupling, then the strap retention is improved, but the field of vision is reduced and the goggle becomes heavier
Solution Approach 1:
The patent employs thin-walled molded structures for the outrigger components that provide sufficient structural strength for strap retention while minimizing the overall volume and surface area of the goggle, thereby preserving the wearer's field of vision and reducing weight.
Solution Approach 2:
The outrigger design incorporates flexible segments that can dynamically adjust to forces applied during impact or movement, allowing the structure to maintain strength without requiring excessive material or bulk, thus preserving field of vision.
3Adaptability or versatility
If multiple separate components are used for the outrigger, then the manufacturing flexibility is improved, but the number of assembly steps increases
Solution Approach 1:
The patent combines multiple outrigger segments into a single integrated molded component where possible, eliminating the need for separate assembly steps while retaining the manufacturing flexibility to use different materials or designs for different portions of the outrigger structure.
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
The solution provides a robust and compact goggle design with improved strap retention, reducing the risk of failure and enhancing the wearer's field of vision while maintaining a smaller form factor.
Implementation Method 1
molding a second segment of the outrigger onto the first segment by flowing molten material into contact with the joint feature, such that a permanent joint is automatically formed between the first segment and the second segment
Data Source
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AI summary
Manufacturing methods are described for a goggle having an outrigger system where each outrigger includes a first segment (1600) coupled to a second segment (1700) at a fixed joint. Portions of the first segment may interlock or join with complementary portions of the second segment, such as through interlocking shapes, a solid friction lock, or via co-molding. The joining portions of the first and second segments may include complementary shapes that interlock together to secure the first and second segments together. The second segment may be molded onto or around at least a portion of the first segment, or vice versa, to secure the first and second segments together.