Welding Mask Filter Holding System with Sliding Rails
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Solution Overview
Problem
Current welding masks have a fixed connection between the protective film and optical filter, making it difficult to replace these components independently, which is necessary due to damage from spatters and varying welding conditions.
Innovation Solution
A filter holding system with sliding rails and stop protrusions allows for easy detachment and reattachment of the optical filter and protective film from the mask casing without tools, using connecting mechanisms and protrusions for secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the protective film and optical filter are fixed to the mask casing using bolts, screws, or rivets, then the connection reliability is improved, but the ease of replacement deteriorates
Solution Approach 1:
The holding system is divided into separate components: a holding frame body, a manipulating unit with connecting pins, and corresponding accommodating cavities in the mask casing. This segmentation allows the filter assembly to be detached and reattached without permanent fastening, resolving the contradiction between secure connection and easy replacement.
Solution Approach 2:
The connection mechanism transitions from a static fixed state to a dynamic state where the manipulating unit can be moved between connected and disconnected positions. The connecting pins can be inserted into and removed from the accommodating cavities, enabling the system to adapt between secure attachment and easy replacement based on operational needs.
2Stability of the object's composition
If the protective film and optical filter are fixed to the mask casing, then the stability of the components is improved, but the adaptability to different welding conditions deteriorates
Solution Approach 1:
By segmenting the connection system into removable holding frames and mask casing components, the protective film and optical filter can be independently replaced. This allows adaptation to different welding conditions by changing the optical filter while maintaining stable mounting through the standardized holding frame structure.
Solution Approach 2:
The holding frame body with standardized connecting pins and accommodating cavities provides a universal mounting solution that can accommodate different optical filters and protective films. This universal interface enables the system to adapt to various welding conditions while maintaining stable and consistent component attachment.
3Manufacturing precision
If a fixed connection mechanism is used for the protective film and optical filter, then the manufacturing precision is improved, but the ease of manufacture deteriorates
Solution Approach 1:
The assembly process is segmented into modular steps: attaching the protective film to the holding frame, mounting the optical filter, and then connecting the entire assembly to the mask casing. This segmentation simplifies manufacturing by allowing each component to be prepared separately with standard tolerances, then easily assembled together without requiring high-precision permanent fastening operations.
Solution Approach 2:
The dynamic connecting pin mechanism provides self-aligning features that compensate for minor dimensional variations during assembly. The inserting motion of the connecting pins into accommodating cavities tolerates small manufacturing tolerances while still achieving secure connection, thereby improving ease of manufacture without sacrificing assembly precision.
Data Source
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Figure 3A~3B
AI summary
A filter holding system for holding an optical filter to a mask casing of a welding mask. The filter holding system can include a holding frame body configured for supporting and accommodating the optical filter, and a connecting mechanism which is provided on the holding frame body and is configured for connecting or disconnecting the holding frame body to or from the mask casing. The connecting mechanism can have a disconnect position and a connect position. In the disconnect position, the connecting mechanism disconnects the holding frame body from the mask casing, and in the connect position, the connecting mechanism connects the holding frame body and the mask casing. A welding mask can comprise a mask casing, a headgear, a protective film, an optical filter and a filter holding system.