Spring-Activated Roll-Top Lid for Waste Container Safety
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional trash cans with flip-top lids pose safety hazards to sanitation workers due to unpredictable lid movement, are prone to hinge failure, and are susceptible to animal infiltration, leading to waste spillage and loss or theft of lids.
Innovation Solution
A roll-top waste container with a spring-activated flexible lid that retracts into a sleeve for storage, featuring a slidable connection and locking mechanism to ensure the lid remains attached to the receptacle, preventing injury and animal access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a flip-top lid is used on a trash can, then the lid can be easily opened and closed, but the lid may fling about unpredictably and pose a safety hazard to workers
Solution Approach 1:
The lid is divided into multiple segments or panels that are connected by hinges, allowing it to flex and control movement. This segmentation prevents the lid from flinging as a single rigid unit while still allowing easy opening and closing operations.
Solution Approach 2:
The lid is equipped with automatic closing mechanisms and positioning features that prepare the lid for safe operation before actual use. The lid automatically returns to a safe position after opening, preventing unpredictable flinging during worker operations.
2Productivity
If a flip-top lid is used on a trash can, then the lid can be opened and closed frequently, but the hinge may fail and the lid may break off the trash can
Solution Approach 1:
The hinge mechanism uses materials and design parameters optimized for high-cycle operation. The hinge incorporates features such as reinforced joints, lubrication systems, and stress-distributing geometries that enable it to withstand hundreds of opening and closing cycles without failure.
Solution Approach 2:
The hinge system includes protective features such as shock-absorbing elements and stress-relief mechanisms that are built in beforehand to prevent failure during frequent operations. These cushioning features protect the hinge from sudden impacts and excessive forces that could cause breakage.
3Ease of operation
If a flip-top lid is used on a trash can, then the lid can be attached to the trash can, but the lid may be lost or stolen when separated from the trash can
Solution Approach 1:
The lid is designed with self-retaining features such as automatic latches, clips, or engagement mechanisms that keep the lid securely attached to the trash can without requiring additional fasteners. The lid automatically re-engages with the can when closed, preventing loss or theft.
Solution Approach 2:
The lid incorporates retention features that nest within the trash can structure, creating an interlocking system. The lid's attachment mechanism is integrated into both the lid and can, ensuring the lid remains securely connected during transport and use.
4Object-affected harmful factors
If a flip-top lid is used on a trash can, then the lid can provide coverage, but animals can easily open the trash can and rummage through the trash
Solution Approach 1:
The lid incorporates anti-tamper features and animal-proof locking mechanisms that prevent animals from opening the trash can. The locking system requires specific actions or forces that are beyond the capability of animals, while still allowing authorized human operation.
Solution Approach 2:
The lid design includes curved or rounded features that prevent animals from gaining leverage to pry the lid open. The smooth, continuous surfaces eliminate crevices and edges that animals could use to manipulate the lid, making the trash can securely closed against animal intrusion.
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 solution provides a safer and more secure waste disposal system by preventing lid detachment, reducing injury risks to workers and preventing animal infiltration, while maintaining lid integrity and preventing waste spillage.
Implementation Method 1
a spring-activated flexible lid that retracts into a sleeve
Data Source
AI summary
An automatic, roll-top waste container with a spring-activated lid includes a receptacle, a flexible lid, a sleeve, a retraction mechanism, and a locking mechanism. The receptacle has curved corners that prevent a trash bag from tearing while being loaded and unloaded. The flexible lid is slidably engaged over an opening of the receptacle. In the open position, the retraction mechanism retracts the flexible lid into the sleeve for storage and safe-keeping. To close the receptacle, a user must manually pull the flexible lid out of the sleeve and engage the locking mechanism. The locking mechanism is operatively coupled onto a front wall of the receptacle. In the engaged position, the locking mechanism prevents the flexible lid from retracting into the sleeve. The user can disengage the locking mechanism to allow the flexible lid to retract back into the sleeve.