Foldable Vacuum Cleaner Dust Bag for Chamber Fit and Easy Opening
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Solution Overview
Problem
Existing vacuum cleaner bags face challenges in adapting to vacuum cleaner chambers, have weak seams prone to damage, and are inefficient when folded, with designs either reducing internal volume or being costly to produce.
Innovation Solution
A vacuum cleaner bag with a protruding section on the bottom that can be folded for storage, allowing for a large interior space when inflated, and side walls extending perpendicularly for easy adaptation to chamber shapes, featuring a triangular protruding section for easy opening and a weldable nonwoven fabric construction for simple assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If internal folds are provided on opposite side walls to enable snug fitting to chamber, then ease of operation is improved, but device complexity increases and manufacturing cost increases
Solution Approach 1:
The bottom is segmented into a base section and multiple protruding sections that can be independently folded. This segmentation allows the bag to be divided into collapsible portions without requiring complex internal folds throughout the entire structure, simplifying the overall design while maintaining ease of opening.
Solution Approach 2:
The folding functionality is extracted from the side walls and concentrated into specific protruding sections at the bottom. Instead of having folds distributed throughout the bag structure, the folding capability is localized to discrete triangular sections that can be easily collapsed and stored.
2Adaptability or versatility
If internal folds are provided on opposite side walls to enable snug fitting to chamber, then adaptability to chamber shape is improved, but manufacturing cost increases
Solution Approach 1:
The bottom is segmented into a base section and multiple protruding sections that can be independently folded. This segmentation allows the bag to be divided into collapsible portions without requiring complex internal folds throughout the entire structure, simplifying the overall design while maintaining ease of opening.
Solution Approach 2:
The protruding sections are provided only at specific locations (opposite sides of the base) rather than throughout the entire bag. This localized approach provides adaptability where needed while minimizing the complexity and cost of manufacturing, as only specific areas require the folded construction.
3Volume of moving object
If the bag is designed to be folded for storage, then volume in storage position is reduced, but opening efficiency when folded deteriorates
Solution Approach 1:
The bottom is segmented into a base section and multiple protruding sections that can be independently folded. This segmentation allows the bag to be divided into collapsible portions without requiring complex internal folds throughout the entire structure, simplifying the overall design while maintaining ease of opening.
Solution Approach 2:
Instead of folding the entire bag or complex internal structures, the invention inverts the approach by providing protruding sections that fold outward from the bottom. This inversion simplifies the folding mechanism, making it easier to open and close while achieving compact storage.
4Ease of manufacture
If seams are created to form the bag structure, then manufacturing is enabled, but reliability deteriorates due to heavily used damage-prone areas
Solution Approach 1:
The protruding sections are connected to the base section through folded edges that integrate the structural support and sealing functions. This merging reduces the number of separate seams required, concentrating stress along the folded edges rather than creating multiple weak seam points throughout the bag.
Solution Approach 2:
The folded edges connecting the protruding sections to the base section create curved, rounded transition zones rather than sharp angular seams. This curvature distributes stress more evenly across the connection points, reducing stress concentration and improving the reliability of the seam areas.
Data Source
Figure 1~2
AI summary
The bag has a base (2) extending from its circumferential side walls for formation of an internal space in a perpendicular direction, where the base includes a rectangular section (3). A projecting section (4) is formed on one side of the base, where the section (4) is foldable on the base section for a storage position of the bag. A side edge (9) connects between two side wall sections at a point of the section (4).