Foldable Vacuum Cleaner Bag Structure for Chamber Fit and Volume
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Solution Overview
Problem
Existing vacuum cleaner bags face challenges in adapting to the shape of vacuum cleaner chambers, experiencing stress at seams and reduced effectiveness when folded, and incur increased costs due to internal folds that reduce volume.
Innovation Solution
A vacuum cleaner bag design featuring a rectangular base section with triangular projecting sections that fold inward for storage, forming a compact shape and extending peripherally to create a large volume when unfolded, allowing easy adaptation to different geometries and reducing stress on seams.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If projections are formed on the sidewalls to permit volume expansion, then the inside volume increases, but the bag cannot be easily adapted to the shape of the vacuum cleaner chamber and seams become high-stress areas
Solution Approach 1:
The bag is divided into a bottom part and multiple sidewall sections that can be independently configured. The sidewall sections are segmented to allow different geometric arrangements, enabling adaptation to various chamber shapes while maintaining volume expansion capability through the projecting sections.
Solution Approach 2:
The sidewall sections are designed to be flexible and movable, allowing the bag to dynamically adjust its shape to fit different vacuum cleaner chamber geometries. This dynamic configuration resolves the contradiction between maintaining a fixed volumetric structure and adapting to variable chamber shapes.
2Volume of moving object
If the vacuum cleaner bag is folded up for storage, then storage compactness improves, but the bag may not open easily and does not reach full effectiveness
Solution Approach 1:
The sidewall sections are segmented with defined folding lines and connection points, allowing the bag to be folded into a compact storage configuration while maintaining the ability to easily unfold and reopen. The segmentation creates natural folding paths that guide the opening process.
Solution Approach 2:
The bag is pre-configured with projecting sections and sidewall geometries that are designed to automatically unfold and expand when deployed. This preliminary structural arrangement ensures that the bag reaches its full effective configuration without requiring complex opening maneuvers.
3Ease of operation
If inside folds are provided at sidewalls to enable easy opening and shape adaptation, then ease of operation improves, but the volume of the bag is reduced and production costs increase
Solution Approach 1:
Instead of using internal folds that consume internal volume, the invention uses projecting sections that extend outward from the sidewalls. This dimensional approach to volume expansion avoids the volume penalty of internal folds while maintaining ease of opening through the same folding mechanism at the boundaries.
Data Source
AI summary
A vacuum cleaner bag includes a bottom part having a substantially rectangular base section. A projecting section is disposed proximate to at least one side of the base section. The projecting section, when folded up for the storage position, rests on the base section. Sidewall sections extend peripherally in a direction away from the bottom part to form an inside space.