Trash Cart Liner Bag With Hinged Lid And Elastic Band
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Solution Overview
Problem
Cleaning and maintaining large wheeled rollout trash carts is cumbersome due to their size, often leading to postponed maintenance.
Innovation Solution
A removable liner bag system with a hinged lid and elastic band secures a trash bag in place within the cart, ensuring it remains positioned during emptying and upright return.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a liner bag is placed in a large wheeled rollout trash cart, then the cart can be used for waste collection, but the cart becomes cumbersome to clean and maintain due to its size
Solution Approach 1:
The system divides the trash cart into two separate components: a reusable rigid cart structure and a removable flexible liner bag. This segmentation allows the cart to be cleaned independently of the bag, while the bag can be easily removed and replaced. The hinge mechanism enables the lid to be opened wide, facilitating access to the bag for removal and installation operations.
Solution Approach 2:
The liner bag is extracted as a separate removable component from the cart. The bag can be completely removed from the cart through the hinge mechanism, allowing the cart to be cleaned without the bag. This extraction resolves the contradiction by separating the cleaning operation from the waste containment function.
2Reliability
If the liner bag extends up and over the sides of the receptacle, then the bag secures itself during emptying, but the bag requires additional securing mechanisms
Solution Approach 1:
The bag positioning system uses dynamic elements including an elastic band that can stretch and contract, and a hinge mechanism that allows the lid to move between open and closed positions. The elastic band dynamically adjusts to secure the bag while allowing for bag expansion during filling. The hinge provides dynamic access for bag removal and installation.
Solution Approach 2:
The liner bag itself is a flexible thin film that extends over the sides of the receptacle. This flexible film naturally conforms to the receptacle shape and can be secured using simple elastic bands rather than rigid complex mechanisms. The flexibility of the bag allows it to be easily manipulated and secured.
3Ease of operation
If the hinge opening is made large to facilitate bag removal, then the bag can be easily installed and removed, but the hinge structure becomes more complex
Solution Approach 1:
The hinge mechanism is segmented into multiple independent elements including hinge pins, hinge arms, and hinge openings. This segmentation allows for a simple yet effective design where the hinge openings are merely slots or gaps in the receptacle wall, not complex mechanical structures. The simplicity of the hinge structure is maintained while still providing adequate opening size for bag removal.
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
Facilitates easy cleaning and maintenance by keeping the bag secured during the emptying process, simplifying the handling and cleaning of rollout carts.
Implementation Method 1
A removable elastic band fits around the receptacle below the lid to secure the bag and tabs in place in the receptacle
Data Source
AI summary
A trash container includes a bottom receptacle with a hinged lid. The hinge connection makes hinge opening(s) along the hinge axis. A trash bag in the receptacle, which extends up and over the sides of the receptacle, includes upward-extending back tab(s) for placement through the hinge opening(s). A removable elastic band fits around the receptacle below the lid to secure the bag and tabs in place in the receptacle.