Vacuum Bag Mounting Features for Correct Filter Bag Alignment
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Solution Overview
Problem
Existing vacuum cleaners often suffer from improper installation of replacement bags or filters, leading to reduced dust and dirt containment efficiency and potential health risks due to dust being blown into the air.
Innovation Solution
A vacuum cleaner dirt containment system featuring a bag chamber with locator ribs and a filter bag assembly with a flange that provides correct alignment and secure attachment, along with a lid that ensures proper installation and prevents improper assembly, using air-permeable materials and gaskets for effective dust filtration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a simple bag insertion design is used, then ease of operation is improved, but reliability of proper installation deteriorates
Solution Approach 1:
The system provides self-checking features where the bag assembly itself indicates through visual feedback mechanisms whether it is properly installed. The bag position indicator and alignment features enable the system to automatically verify correct installation without requiring user expertise or additional tools.
Solution Approach 2:
The patent incorporates visual feedback mechanisms including bag position indicators and alignment features that provide immediate feedback to the user about installation correctness. This feedback loop allows users to verify proper installation through direct observation of indicator positions and alignment features.
2Reliability
If alignment features are added to ensure proper bag installation, then reliability of proper installation is improved, but device complexity increases
Solution Approach 1:
The patent applies alignment features and indicators only at specific critical locations where they are most effective, rather than throughout the entire bag chamber. The locator pins, alignment features, and visual indicators are strategically positioned to provide maximum installation reliability with minimum added complexity.
Solution Approach 2:
The alignment features utilize asymmetric positioning of locator pins and corresponding recesses in the bag flange, creating a unique orientation that guides proper installation. This asymmetric design ensures the bag can only be installed in the correct orientation, improving reliability without requiring complex symmetric mechanisms.
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
Ensures proper installation of filter bags, enhances dust containment efficiency, and prevents dust from being blown into the air, providing a safer and more effective cleaning experience.
Implementation Method 1
a bag formed at least partially of an air-permeable material
Data Source
AI summary
A vacuum cleaner dirt containment system with a bag chamber having an open end, an outlet adapted to be in fluid communication with a vacuum fan inlet located on the vacuum cleaner housing, and a plurality of locator ribs extending from an inner wall of the bag chamber. Each locator rib has a landing adjacent an inner wall of the bag chamber, and a pin located inward of the landing and extending from the landing towards the open end of the bag chamber. A filter bag assembly is adapted to be inserted into the bag chamber, and has a flange attached to an open end of a permeable filter bag. A flange air inlet passes through the flange into the bag. The flange has openings located to be inserted over the locator rib pins, and support segments located to abut the locator rib landings. The lid is selectively attachable to the open end of the bag chamber, and includes an air inlet mounting tube that extends into the flange air inlet when the lid is attached to the open end of the bag chamber. A bag having locating features and variations of the foregoing are also provided.