Flexible Bag Frame for Yard Debris Collection
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Solution Overview
Problem
Plastic or flexible bags do not support themselves in an open configuration, making them awkward and difficult to fill when used for collecting yard debris.
Innovation Solution
An apparatus with a frame that supports a flexible bag in an open configuration, using a retaining element like an elastic retainer and a handle, allowing the bag to be secured to the frame, which can be shaped to mimic the natural shape of a disposable plastic bag, providing a secure three-point hold and facilitating easier filling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a flexible bag is used for collecting yard debris, then the bag is lightweight and easy to dispose of, but the bag cannot support itself in an open configuration making it awkward and difficult to fill
Solution Approach 1:
A rigid frame structure serves as an intermediary support system that enables the flexible bag to maintain an open configuration during filling operations. The frame provides the necessary structural support while the bag remains lightweight for easy disposal after use.
Solution Approach 2:
The bag system is segmented into two functional components: a lightweight flexible bag for containing debris and a rigid frame structure for providing structural support and maintaining open configuration during filling operations.
2Ease of operation
If a rigid frame is used to support the bag, then the bag can maintain an open configuration, but the overall device becomes heavier and more complex
Solution Approach 1:
The frame structure is designed with specific local qualities - a rigid perimeter frame for structural support and an elastic retainer element for securing the bag. This localized application of rigidity where needed maintains simplicity while achieving the desired open configuration support.
Solution Approach 2:
Instead of making the entire bag rigid to support itself, the solution inverts the approach by making the supporting structure (frame) rigid and the bag itself remains flexible, allowing each component to perform its optimal function.
3Device complexity
If the bag is held open manually, then no additional structure is needed, but repetitive bending and stooping occur reducing productivity
Solution Approach 1:
The frame structure provides self-service by automatically maintaining the bag in an open configuration without requiring manual holding or repetitive bending actions from the user, thereby eliminating the source of reduced productivity.
Solution Approach 2:
The frame is pre-configured to maintain the bag in an open, ready-to-fill state before the filling operation begins, eliminating the need for repetitive manual positioning and bending actions during the filling process.
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 apparatus allows for efficient collection of yard debris by maintaining the bag in an open position, reducing repetitive bending and stooping, and enabling faster filling with methods like shoveling, dust-pan, and curb-scraping, while accommodating various bag sizes.
Implementation Method 1
an elastic retainer for securing the bag to the frame
Data Source
AI summary
An apparatus for collecting leaves and other yard debris supports a flexible bag in an open configuration. The apparatus has a frame for supporting the flexible bag, and a retaining element for securing the flexible bag to the frame. A handle can be attached to the frame. The apparatus can be used as a tool to collect leaves or other yard debris directly. The frame can have a shape that defines an opening through which the flexible bag is draped. The shape of the frame can have at least one substantially straight side.