Welding Helmet Lens Assembly with Interchangeable Outer Cover
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Welding helmets with traditional lens designs suffer from obstructed peripheral vision, making it difficult for welders to recognize fires or dangers outside their direct line of sight, and the outer protective lenses often need to be replaced frequently due to damage, requiring disassembly for replacement.
Innovation Solution
A lens-in-a-lens assembly with a retainer lens providing 180-degree viewing and interchangeable Automatic Darkening Filter (ADF) lenses, allowing for easy replacement of the outer protective lens from the outside without disassembling the helmet, and a design that maximizes peripheral vision while protecting against flash burns and sparks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a traditional single lens design is used in welding helmets, then the lens can provide eye protection from UV rays and sparks, but the peripheral vision is obstructed and welders cannot recognize hazards outside their direct line of sight
Solution Approach 1:
The patent implements a lens-in-a-lens configuration where an inner protective lens is nested within an outer peripheral vision lens. The inner lens provides eye protection while the outer lens allows peripheral vision, resolving the contradiction between protection and vision by nesting two functional lenses together.
Solution Approach 2:
The viewing area is segmented into two distinct lens components: an inner lens for direct eye protection and an outer lens for peripheral vision. This segmentation allows each lens to be optimized for its specific function while working together as a unified protective system.
2Reliability
If the outer protective lens is made damage-resistant, then it can withstand scratching and damage from welding environment, but it still needs to be replaced frequently and requires disassembly for replacement which reduces productivity
Solution Approach 1:
The lens system is segmented into removable outer lens and inner lens components. The outer lens can be independently removed and replaced without disassembling the entire helmet, allowing quick replacement of damaged lenses while maintaining the protective function.
Solution Approach 2:
The outer lens is designed with pre-formed corners that engage with corresponding receptacles in the helmet frame, allowing the lens to be pre-installed in the correct orientation and enabling tool-free removal and replacement by simply pulling the lens outward.
3Manufacturing precision
If the lens assembly requires disassembly for lens replacement, then proper installation can be ensured, but the replacement process becomes time-consuming and reduces worker productivity
Solution Approach 1:
The outer lens is designed with pre-formed corners that automatically align with receptacles in the helmet frame during installation. This preliminary configuration ensures proper installation without requiring complex assembly steps or tools, while enabling quick replacement by simply pulling the lens outward.
Solution Approach 2:
Instead of requiring screws or clips to be removed from the inside of the helmet for lens replacement, the design allows the lens to be removed from the outside by pulling outward on the pre-formed corners, inverting the traditional replacement approach and eliminating the need for disassembly.
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
Enhances the welder's ability to detect peripheral hazards and improves productivity by allowing quick and easy replacement of damaged lenses, maintaining protection and visibility throughout the welding process.
Implementation Method 1
Automatic Darkening Filter (ADF) lenses which darken automatically when exposed to increased light such as the flare of a welding arc
Data Source
AI summary
A retainer lens of shape and dimensions configured to be releasably secured in the front opening of a face plate or helmet has a window opening configured for positioning in front of the eyes of a wearer of the face plate or helmet. An outer protective cover is configured to be secured over the window opening by means of scrap-book like frame corners located on the front surface of the retainer lens and spaced outwardly from respective corners of the window opening. The corners of the outer protective cover are releasably engaged with respective frame corners, so that the cover can be removed from the outside of the face plate as needed for replacement with a new outer protective cover, simply by removing the corners of the current outer protective cover from the respective frame corners, and then engaging a new outer protective cover into the frame corners.