Mounting tab for threaded fitting of vacuum bag
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Solution Overview
Problem
Cross-threading issues during the installation and removal of vacuum bags in vacuum cleaners make the process difficult and potentially damaging.
Innovation Solution
A vacuum bag with a mounting tab and threaded fitting that includes guide rails and locking mechanisms to ensure proper alignment and prevent cross-threading, allowing for easy connection and disconnection without damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a threaded collar is used to connect the vacuum bag to the vacuum cleaner, then the connection can be secure, but cross-threading occurs making installation and removal difficult
Solution Approach 1:
The mounting tab is positioned and configured in advance to guide the threaded collar into proper alignment with the vacuum cleaner housing before threading begins. This preliminary alignment action prevents cross-threading from occurring in the first place, making installation easier while maintaining secure connection.
Solution Approach 2:
The mounting tab acts as an intermediary element between the threaded collar and the vacuum cleaner housing. It provides a guiding surface and alignment reference that mediates the connection process, ensuring the threaded collar engages correctly with the housing threads without cross-threading.
2Reliability
If the threaded connection is made tightly to ensure a seal, then the connection is secure, but the vacuum bag may be damaged during removal
Solution Approach 1:
The mounting tab and guide rails are configured in advance to ensure proper alignment and distribution of threading forces. This preliminary setup allows the connection to be tightened securely without creating stress concentrations that could damage the vacuum bag during removal.
Solution Approach 2:
The mounting tab structure provides a cushioning effect by distributing the mechanical stresses of tightening and loosening across a larger area. This protects the vacuum bag material from concentrated forces that could cause damage during installation and removal operations.
Data Source
AI summary
A dust collecting assembly for a vacuum cleaner includes a dust collecting member and a threaded fitting. The dust collecting member is configured to collect dust and debris. The threaded fitting is disposed in communication with the dust collecting member. The threaded fitting includes a threaded collar configured to be connected to a vacuum cleaner. At least one mounting tab is spaced from the threaded collar. The mounting tab is configured to be received by the vacuum cleaner.