Segmented Face Protector with Auto-Darkening Filter
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Solution Overview
Problem
Current welding protection equipment is bulky and uncomfortable, limiting the field of view and causing neck strain due to its weight and design, and it does not adequately protect against the effects of fault arcs, particularly in the visible spectral range, leading to risks of eye damage and injury.
Innovation Solution
A face protector with an auto-darkening filter unit, a combination of hard and soft shell units, and a cap design that balances weight distribution, providing improved comfort and protection against fault arcs by integrating support elements and using flexible materials to reduce the 'chimney effect' and enhance visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a stiff and bulky face protector is mounted on a harness or headgear, then protection against welding glare and splatter is improved, but weight and bulkiness increase causing neck strain and fatigue
Solution Approach 1:
The face protector is divided into multiple segments: a hard shell unit for structural protection, a soft shell unit for comfort and sealing, and an integrated cap for head coverage. This segmentation allows each component to be optimized independently, reducing overall weight while maintaining protection.
Solution Approach 2:
The patent combines the face protector with an integrated cap design that balances weight distribution across the head. The cap integrates support elements that distribute the weight of the protective shield, reducing neck strain while maintaining comprehensive protection.
2Reliability
If a traditional face protector design is used, then protection is provided, but the field of view is limited and tunnel-like viewing characteristic occurs
Solution Approach 1:
The protective shield features a curved, spherical design that expands the field of view while maintaining protection. The spherical geometry eliminates tunnel vision by providing a wider angular coverage, allowing the wearer to see more of the surrounding environment without compromising safety.
3Reliability
If the face protector is positioned at a large distance from the head, then protection is improved, but discomfort and operational hindrance increase especially in confined spaces
Solution Approach 1:
The soft shell unit incorporates flexible materials that allow the face protector to adapt dynamically to the wearer's head shape and movement. This flexibility enables the protector to maintain close contact with the head for comfort and mobility in confined spaces while still providing adequate protection through the hard shell unit.
4Object-affected harmful factors
If passive protection materials are used against fault arcs, then some protection is provided, but protection against visible spectral range radiation is insufficient leading to eye damage risk
Solution Approach 1:
The protective shield uses composite materials that combine passive fault arc resistance with active opto-electronic filtering. The hard shell unit provides passive protection against thermal and mechanical effects, while the integrated ADF pane provides active protection against visible spectral range radiation through automatic darkening, eliminating eye damage risk.
5Reliability
If an auto-darkening filter unit is integrated, then protection against visible radiation is improved, but device complexity increases
Solution Approach 1:
The ADF unit serves multiple functions: it provides automatic protection against visible radiation, integrates with the hard shell structure, and works synergistically with the passive protective materials. This multi-functionality justifies the added complexity by delivering comprehensive protection that addresses multiple hazards simultaneously.
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 face protector offers a larger field of view, reduced weight, and improved comfort, while providing enhanced protection against fault arcs, reducing fatigue and the risk of eye damage through balanced weight distribution and effective shielding.
Implementation Method 1
An auto-darkening filter (ADF) unit including a filter pane or ADF pane and an electronics unit driving the ADF pane, the electronics unit being configured to switch the ADF pane automatically from a transparent state to a darkened state
Data Source
AI summary
A face protector for protecting a worker's eyes and face comprises an auto-darkening filter unit which in turn comprises a filter pane or ADF pane and an electronics unit driving the ADF pane, the electronics unit being configured to switch the ADF pane automatically from a transparent state to a darkened state. A hard shell unit comprises a shell carrying an ADF unit with the ADF and being shaped to protect a wearer's face, the shell being manufactured of a plastic material. A soft shell unit comprises a cap for protecting the crown of the wearer's head and a neck protector for protecting the wearer's neck, the soft shell unit being made of a combination of flexible fabric with support elements.