Garbage Bag Holder with Biasing Depending Frames
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Solution Overview
Problem
Existing garbage bag holders are not adaptable to paper bags as they require critical size matching and can cause tearing, and they become soiled and contaminated with waste due to design limitations.
Innovation Solution
A garbage bag holder with a base frame and side frames that support the bag externally, featuring depending frames that extend downwardly into the bag only partially and are biased outwardly to distribute tension evenly, reducing the risk of tearing and keeping the frames clean.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If legs are inserted into the bag along the full height of the bag to support the bag, then the bag can be held open, but the legs become soiled and contaminated with waste
Solution Approach 1:
The frame is divided into two distinct parts: an upper portion that remains outside the bag and a lower portion that extends into the bag. This segmentation allows the frame to provide full-height support while isolating the contamination-prone lower portion from the upper clean portion, solving the contradiction between support stability and contamination.
Solution Approach 2:
A detachable connector serves as an intermediary between the upper and lower portions of the frame. This intermediary allows the lower portion to be easily removed and cleaned or replaced, maintaining support functionality while addressing the contamination issue by enabling frequent maintenance of the contaminated section.
2Reliability
If the frame size is set to closely match the bag size to receive the four legs within the four corners of the bag, then the bag can be properly supported, but the frames are not adaptable to minor variations in sizes of the bags
Solution Approach 1:
The frame incorporates adjustable elements that allow the distance between the lower legs to be modified. This dynamic adjustment capability enables the frame to adapt to different bag sizes while maintaining proper support geometry, resolving the contradiction between support accuracy and size adaptability.
Solution Approach 2:
The frame design allows changing the spatial parameters (distance between legs) to match different bag dimensions. By enabling parameter adjustment, the frame can accommodate various bag sizes while preserving the correct support configuration for each specific bag type.
3Reliability
If outward pressure is applied to support the bag under tension, then the bag can be held open, but the separation force concentrates at the pivotal connection between the two side frames which promotes tearing of the top edge of the bag
Solution Approach 1:
The frame transitions from a two-dimensional planar structure to a three-dimensional configuration with the lower portions extending downward into the bag. This dimensional change distributes the outward pressure forces along the vertical dimension rather than concentrating them at a single horizontal pivot point, reducing stress on the bag top edge while maintaining opening support.
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
The holder effectively maintains paper bags in an open position without size constraints and minimizes contamination, reducing the likelihood of tearing and maintaining cleanliness by distributing tension along the full length of the depending frames.
Implementation Method 1
a biasing mechanism arranged to bias the side frames and the depending frames supported thereon in the working position laterally outwardly and away from one another
Data Source
AI summary
A garbage bag holder includes a base frame and a pair of side frames extending upwardly at spaced apart positions from the base frame to receive a paper bag or a plastic bag between the side frames. Depending frames are suspended from the top ends of the two side frames so as to be arranged to extend downwardly only partway into a paper bag so that the particular size of the frame is not required to be critically matched to the bags being used nor does the frame become soiled by the contents of the bag. Outward biasing force can be applied to the depending frames by the side frames along the full height of the depending frames to prevent any tearing at the top edges of a paper bag. Alternatively, a plastic bag can be held under tension between the top ends of the side frames.